{"product_id":"millertech-12v-100ah-dual-purpose-lithium-marine-battery","title":"Millertech 12V 100Ah Dual Purpose Lithium Marine Battery | Group 24","description":"\u003cstyle\u003e\n  .lbs-page{font-size:18px;line-height:1.6;color:#1a1a1a;max-width:900px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;}\n  .lbs-page h2{font-size:1.6em;margin:1.4em 0 .5em;line-height:1.25;}\n  .lbs-page h3{font-size:1.3em;margin:1.3em 0 .5em;}\n  .lbs-page h4{font-size:1.1em;margin:1.1em 0 .4em;}\n  .lbs-page p{margin:0 0 1em;}\n  .lbs-page ul{margin:0 0 1em;padding-left:1.2em;}\n  .lbs-page li{margin:0 0 .5em;}\n  .lbs-sub{font-size:1.15em;color:#444;font-weight:600;margin-bottom:1.2em;}\n  :root{--lbs-accent:#57b947;--lbs-accent-dark:#2e7d32;}\n  .lbs-benefits{list-style:none;padding:0;margin:1em 0;}\n  .lbs-benefits li{padding:10px 0 10px 30px;position:relative;border-bottom:1px solid #eee;}\n  .lbs-benefits li::before{content:\"\";position:absolute;left:0;top:16px;width:12px;height:12px;background:var(--lbs-accent);border-radius:2px;}\n  .lbs-who{background:#f3f8f1;border-left:4px solid var(--lbs-accent);padding:16px 20px;margin:1.2em 0;border-radius:0 6px 6px 0;}\n  .lbs-table{width:100%;border-collapse:collapse;margin:1em 0;font-size:.95em;}\n  .lbs-table th,.lbs-table td{border:1px solid #ddd;padding:10px 12px;text-align:left;vertical-align:top;}\n  .lbs-table th{background:var(--lbs-accent-dark);color:#fff;font-weight:600;}\n  .lbs-table tr:nth-child(even) td{background:#f4f9f2;}\n  .lbs-rig{background:#fafafa;border:1px solid #e6e6e6;border-radius:6px;padding:14px 16px;margin:0 0 12px;}\n  .lbs-rig strong{color:var(--lbs-accent-dark);}\n  .lbs-note{font-size:.9em;color:#666;font-style:italic;}\n  \/* CSS-only FAQ accordion (house .lbs-faq \/ .lbs-a pattern) *\/\n  .lbs-faq{border-bottom:1px solid #e0e0e0;}\n  .lbs-faq input{position:absolute;opacity:0;pointer-events:none;}\n  .lbs-faq label{display:block;cursor:pointer;font-weight:600;padding:16px 34px 16px 0;position:relative;font-size:1.02em;}\n  .lbs-faq label::after{content:\"+\";position:absolute;right:6px;top:14px;font-size:1.4em;color:var(--lbs-accent-dark);line-height:1;}\n  .lbs-faq input:checked ~ label::after{content:\"\\2212\";}\n  .lbs-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}\n  .lbs-faq input:checked ~ .lbs-a{max-height:1200px;}\n  .lbs-a p{padding:0 0 16px;margin:0;}\n  .lbs-faqgroup{margin:1.4em 0;}\n  .lbs-faqgroup \u003e h4{border-bottom:2px solid var(--lbs-accent);padding-bottom:6px;}\n\u003c\/style\u003e\n\u003c!-- ================= TAB 1: OVERVIEW \/ WHO IT'S FOR ================= --\u003e\n\u003cp\u003eThe Millertech 12V 100Ah Dual Purpose is a LiFePO4 (lithium iron phosphate) battery built to do two jobs from a single Group 24 box: deliver the high burst of current needed to \u003cstrong\u003estart your outboard\u003c\/strong\u003e, and provide the steady, stable \u003cstrong\u003edeep-cycle energy\u003c\/strong\u003e that today's electronics-heavy boats demand. It carries a 1000 CCA cranking rating and 100Ah of storage, with a Battery Management System (BMS) that handles over-charge, over-discharge, over-current, and temperature protection automatically.\u003c\/p\u003e\n\u003cp\u003eFor most bass, bay, and multi-species anglers, this is the \"one battery\" answer, it cranks the motor and runs the console and bow electronics off the same source, which is why owners routinely report replacing a pair of lead-acid batteries with a single Millertech and shedding weight in the process.\u003c\/p\u003e\n\u003cp\u003eThe 100Ah is the compact, right-sized option: a smaller Group 24 case, 1000 CCA, and a lower price than the 135Ah. If you run four or more large graphs with multiple forward-facing sonar units, the largest high-horsepower outboards, or want the longest possible day, step up to the \u003cstrong\u003eMillertech 12V 135Ah Dual Purpose (Group 31, 1500 CCA)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"lbs-who\"\u003e\n\u003ch4\u003eWho this battery is for\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAnglers who want a \u003cstrong\u003esingle starting + electronics battery\u003c\/strong\u003e instead of separate cranking and house batteries.\u003c\/li\u003e\n\u003cli\u003eBoaters running \u003cstrong\u003eforward-facing sonar\u003c\/strong\u003e (LiveScope, Mega Live, ActiveTarget) plus multiple graphs who keep dipping their AGM too low.\u003c\/li\u003e\n\u003cli\u003eAnyone cutting weight or fitting a \u003cstrong\u003eGroup 24 tray, \u003c\/strong\u003ea 31 lb lithium in a compact case.\u003c\/li\u003e\n\u003cli\u003eRV, off-grid, solar, tiny-home, and golf-cart users who need a rugged 12V dual-purpose battery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWho should look elsewhere\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIf your engine maker \u003cstrong\u003especifically prohibits\u003c\/strong\u003e lithium starting batteries and you don't want to add a DC-DC charger, a dedicated deep-cycle lithium plus an AGM cranking battery may suit you better. See the Charging \u0026amp; Engine Compatibility tab.\u003c\/li\u003e\n\u003cli\u003eIf you need a dedicated \u003cstrong\u003e24V or 36V trolling motor\u003c\/strong\u003e bank, use Millertech's dedicated 24V\/36V trolling batteries for that job (see Trolling Motors below).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch4\u003eStandard vs. Heated, which variant?\u003c\/h4\u003e\n\u003cp\u003eThis page offers two versions. The \u003cstrong\u003eStandard (12100G24-DP)\u003c\/strong\u003e is the right choice for most boaters, especially in warm climates. The \u003cstrong\u003eHeated (12100DPH-G24)\u003c\/strong\u003e adds smart self-heating for cold-weather \u003cem\u003echarging\u003c\/em\u003e: when it is connected to a charger and the internal temperature drops to 32°F, the heater automatically warms the battery to 34°F before charging resumes, so freezing temperatures don't stop you from topping off. Note the heater runs \u003cstrong\u003eonly while connected to a charger,\u003c\/strong\u003e it is a cold-charging feature, not a discharge warmer. If you launch, store, or charge in sub-freezing conditions, choose Heated.\u003c\/p\u003e\n\u003c!-- ================= TAB: IS THIS THE RIGHT BATTERY ================= --\u003e\n\u003ch4\u003eIs this the right battery for you?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eChoose this battery if you:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHave a \u003cstrong\u003eGroup 24 tray\u003c\/strong\u003e or tight battery space and want a compact dual-purpose lithium.\u003c\/li\u003e\n\u003cli\u003eRun a \u003cstrong\u003elighter electronics load,\u003c\/strong\u003e one or two graphs and a forward-facing sonar unit, rather than a full four-graph tournament spread.\u003c\/li\u003e\n\u003cli\u003eWant \u003cstrong\u003eone battery to crank the motor and run your electronics\u003c\/strong\u003e on a bass, bay, or multi-species boat.\u003c\/li\u003e\n\u003cli\u003eWant a \u003cstrong\u003elower entry price\u003c\/strong\u003e into lithium cranking, or need a dependable secondary\/kicker battery.\u003c\/li\u003e\n\u003cli\u003eValue \u003cstrong\u003eBluetooth monitoring\u003c\/strong\u003e and want to know your charge before you leave the ramp.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eStep up to the 135Ah (Group 31, 1500 CCA) if you:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRun \u003cstrong\u003efour or more large graphs\u003c\/strong\u003e and multiple forward-facing sonar units.\u003c\/li\u003e\n\u003cli\u003eCrank the \u003cstrong\u003elargest high-horsepower outboards\u003c\/strong\u003e and want maximum cranking headroom.\u003c\/li\u003e\n\u003cli\u003eFish the \u003cstrong\u003elongest days\u003c\/strong\u003e and want the most reserve capacity possible.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eConsider a different setup if you:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNeed a dedicated \u003cstrong\u003e24V or 36V trolling motor\u003c\/strong\u003e bank use a Millertech 24V\/36V trolling battery for that job.\u003c\/li\u003e\n\u003cli\u003eRun an engine whose maker \u003cstrong\u003eprohibits lithium cranking batteries\u003c\/strong\u003e and you don't want to add a DC-DC charger pair an AGM cranking battery with a lithium house battery instead.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePopular with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTournament bass anglers and weekend fishermen\u003c\/li\u003e\n\u003cli\u003eBay boats, multi-species, walleye, crappie, and musky rigs\u003c\/li\u003e\n\u003cli\u003eElectronics-heavy boats running forward-facing sonar\u003c\/li\u003e\n\u003cli\u003eRV, off-grid, solar, and tiny-home 12V systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ================= TAB 2: WHY UPGRADE FROM AGM ================= --\u003e\n\u003ch4\u003eWhy upgrade from AGM\u003c\/h4\u003e\n\u003cp\u003eSerious anglers move off AGM and flooded lead-acid for a handful of concrete reasons:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage stays flat.\u003c\/strong\u003e Lead-acid sags as it drains, which is exactly when forward-facing sonar starts dropping out. LiFePO4 holds a stable voltage deep into the discharge, so your graphs stay lit and connected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore usable capacity.\u003c\/strong\u003e You can safely use nearly all of a lithium battery's rated capacity, versus roughly half of a lead-acid battery, so 100Ah of lithium does the work of a much larger AGM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight.\u003c\/strong\u003e At 31 lb, it is a fraction of a comparable lead-acid starting battery, and consolidating two batteries into one compounds the savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster charging and no memory effect.\u003c\/strong\u003e Charge it at any state of charge without harming capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong, maintenance-free service life.\u003c\/strong\u003e Millertech rates the Sport Series for many times the cycle life of lead-acid, backed by a 10-year warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ================= TAB 3: APPLICATIONS ================= --\u003e\n\u003ch3\u003eApplications \u0026amp; Compatibility\u003c\/h3\u003e\n\u003ch4\u003eCommon applications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBass boats\u003c\/strong\u003e single cranking + electronics battery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBay boats, multi-species, and center-console rigs\u003c\/strong\u003e as a starting battery, house\/electronics battery, or both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward-facing sonar setups\u003c\/strong\u003e a dedicated electronics battery for FFS and networked graphs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRV and campers \u003c\/strong\u003edual-purpose starting and house power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-grid, solar, and tiny homes,\u003c\/strong\u003e 12V storage with a rugged, sealed case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGolf carts and utility vehicles, \u003c\/strong\u003e12V applications needing both cranking and cycling.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEmergency and backup power.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ================= TAB: BOAT, ENGINE \u0026 ELECTRONICS COMPATIBILITY ================= --\u003e\n\u003ch4\u003eBoat, engine \u0026amp; electronics compatibility\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eBoats it's commonly installed on\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAs a Group 24 dual-purpose battery, it drops into the standard trays used across most fishing platforms, Skeeter, Ranger, Phoenix, Bass Cat, Nitro, Triton, Caymas, Vexus, Blazer, Falcon, Xpress, SeaArk, Lund, Alumacraft, Crestliner, and Tracker among them. If you're searching for a battery for a specific hull (for example, a Ranger Z520 or a Phoenix 921), the fit comes down to your Group 24 tray and your engine's charging requirements, confirm both before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEngines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMillertech states this battery meets the cranking and charging requirements for \u003cstrong\u003eMercury 4-stroke outboards up to 250 hp\u003c\/strong\u003e (Pro XS, FourStroke, and Verado families), consistent with Mercury's service bulletin permitting lithium starting batteries on qualifying engines. Owners have run them since 2016.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor other brands, Yamaha (SHO, VMAX), Suzuki, Honda, Tohatsu verify with the engine manufacturer first.\u003c\/strong\u003e Several have not approved lithium cranking batteries, or require specific conditions. When in doubt, run a dedicated AGM cranking battery alongside a lithium house battery with a DC-DC charger. Always confirm against your engine's current manual before converting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectronics it powers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis battery supplies stable 12V power to essentially any marine electronics you can wire to it. Because LiFePO4 holds a flat voltage deep into the discharge, voltage-sensitive gear stays lit and connected far longer than on a sagging lead-acid battery. Commonly powered gear includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForward-facing sonar (FFS):\u003c\/strong\u003e Garmin LiveScope (LVS34, LVS62), Humminbird MEGA Live and MEGA Live 2, Lowrance ActiveTarget and ActiveTarget 2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChartplotters and graphs:\u003c\/strong\u003e Garmin, Humminbird, and Lowrance multifunction displays, including networked NMEA 2000 setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrolling motors (as a house\/electronics source, not the trolling bank):\u003c\/strong\u003e Minn Kota Ultrex, Quest, and Ghost; Garmin Force and Force Pro; MotorGuide Tour Pro; Rhodan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories:\u003c\/strong\u003e Power-Pole shallow-water anchors, livewell and bilge pumps, aerators, lighting, stereo, and USB charging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"lbs-note\"\u003eElectronics are electrical loads, not compatibility restrictions any 12V device can be powered. Naming a brand here does not imply endorsement by that manufacturer.\u003c\/p\u003e\n\u003c!-- ================= TAB 4: REAL RIGS \/ IN THE FIELD ================= --\u003e\n\u003ch3\u003eReal-World Performance\u003c\/h3\u003e\n\u003cp\u003eThe 100Ah is sized for a full day of typical fishing electronics. Runtime depends on your exact gear, screen brightness, and pump duty cycle, but the estimates below give a realistic picture of what one battery handles. If your loads land in the \"heavy\" row, size up to the 135Ah.\u003c\/p\u003e\n\u003ch4\u003eEstimated runtime by setup\u003c\/h4\u003e\n\u003ctable class=\"lbs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical setup\u003c\/th\u003e\n\u003cth\u003eApprox. draw\u003c\/th\u003e\n\u003cth\u003eEstimated runtime\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight: one or two 12″ graphs + one forward-facing sonar\u003c\/td\u003e\n\u003ctd\u003e~7-8A\u003c\/td\u003e\n\u003ctd\u003e~11-13 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModerate: three graphs + FFS + intermittent livewell\u003c\/td\u003e\n\u003ctd\u003e~12-14A\u003c\/td\u003e\n\u003ctd\u003e~7-8 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy: four graphs + two FFS modules + steady aerators (size up to 135Ah)\u003c\/td\u003e\n\u003ctd\u003e~16-18A\u003c\/td\u003e\n\u003ctd\u003e~5-6 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"lbs-note\"\u003eEstimates only, based on typical 2-3A draw per graph or forward-facing sonar module and 100Ah of capacity; engine cranking draw is negligible over a day. Real results vary with your exact electronics, backlight level, and pump duty cycle. Putting units in standby during runs extends runtime.\u003c\/p\u003e\n\u003ch4\u003eGood fit for the 100Ah\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle cranking + electronics battery\u003c\/strong\u003e on bass, bay, and multi-species boats running a couple of graphs and a forward-facing sonar unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated electronics battery\u003c\/strong\u003e that keeps voltage flat so graphs and FFS stay lit deep into the day.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary or kicker starting battery\u003c\/strong\u003e, or a compact replacement where a Group 24 tray limits your options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRV, off-grid, and solar\u003c\/strong\u003e 12V setups needing a rugged dual-purpose battery in a smaller case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRunning four or more large graphs with multiple FFS units, heavy livewell aeration all day, or the largest outboards? That is the job for the \u003cstrong\u003e135Ah (Group 31, 1500 CCA)\u003c\/strong\u003e it carries more reserve and more cranking headroom.\u003c\/p\u003e\n\u003c!-- ================= TAB 5: CHARGING \u0026 ENGINE COMPATIBILITY ================= --\u003e\n\u003ch3\u003eCharging \u0026amp; Installation\u003c\/h3\u003e\n\u003ch4\u003eWhat charger should I use?\u003c\/h4\u003e\n\u003cp\u003eUse a lithium (LiFePO4) charger. This battery is built around a 14.6V max charge voltage, and a lead-acid or AGM charger set to higher absorption or equalization voltages can trip the BMS or stress the cells. Equalization is not recommended turn it off if your charger has it. Millertech's recommended charge current is about 25A, and the battery accepts up to 100A maximum. Matching chargers below.\u003c\/p\u003e\n\u003ctable class=\"lbs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCharger\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V 10A (1210C)\u003c\/td\u003e\n\u003ctd\u003eOvernight \/ light use\u003c\/td\u003e\n\u003ctd\u003e110V AC plug-in, most economical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V 20A (1220C)\u003c\/td\u003e\n\u003ctd\u003eSame-day recharge\u003c\/td\u003e\n\u003ctd\u003e110V AC plug-in, roughly twice as fast\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V 20A On-Board (1220M)\u003c\/td\u003e\n\u003ctd\u003ePermanent boat install\u003c\/td\u003e\n\u003ctd\u003eIP65 waterproof, plug into shore power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V-24V Dark Speed On-The-Run\u003c\/td\u003e\n\u003ctd\u003e12V + 24V systems\u003c\/td\u003e\n\u003ctd\u003eCharges while you run; IP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V-36V Dark Speed On-The-Run\u003c\/td\u003e\n\u003ctd\u003e12V + 36V systems\u003c\/td\u003e\n\u003ctd\u003eCharges while you run; IP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-Bank \/ 3-Bank On-Board (1215-2, 1215-3, 121624-3, 121636-3)\u003c\/td\u003e\n\u003ctd\u003eMultiple batteries at once\u003c\/td\u003e\n\u003ctd\u003eIsolated banks; charge start + electronics + trolling together\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eCan I use a NOCO or my existing onboard marine charger?\u003c\/h4\u003e\n\u003cp\u003eYes, provided it has a true lithium\/LiFePO4 mode. Many marine chargers (including NOCO Genius models) offer a selectable lithium profile. Avoid charging on a lead-acid-only profile with high equalization voltage.\u003c\/p\u003e\n\u003ch4\u003eCan I charge it from my outboard's alternator while running?\u003c\/h4\u003e\n\u003cp\u003eThis is the most important compatibility question for a lithium starting battery, so here is the straight answer. Because lithium has low internal resistance, it can pull a high charge current, and a marine alternator running at full output for long stretches generates heat. With 1000 CCA and a 300A peak, this battery starts a wide range of outboards. Mercury has issued a service bulletin permitting lithium starting batteries on qualifying engines when the battery meets their specifications. For the largest high-horsepower outboards, or if you want maximum cranking headroom, the 135Ah (1500 CCA) is the stronger choice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlways confirm against your own engine's manual or service bulletin before installing.\u003c\/strong\u003e Yamaha, Suzuki, and Honda have generally not approved lithium starting batteries at the time of writing; if you run one of these engines, verify with the engine manufacturer first, or run a dedicated AGM cranking battery with a lithium house battery and a DC-DC charger.\u003c\/p\u003e\n\u003ch4\u003eStorage and winterizing\u003c\/h4\u003e\n\u003cp\u003eLiFePO4 stores well. Charge it, disconnect it, and keep it in a cool, dry place; it does not need a constant trickle charge. Self-discharge is under 4% per month.\u003c\/p\u003e\n\u003c!-- ================= TAB 6: COLD WEATHER \u0026 HEATED ================= --\u003e\n\u003ch4\u003eCold weather \u0026amp; low-temp protection\u003c\/h4\u003e\n\u003cp\u003eEvery version of this battery includes built-in low-temperature charging protection. The recommended charge temperature range is 25°F-131°F, and the BMS blocks charging when the battery is too cold to prevent the permanent damage (lithium plating) that occurs if a LiFePO4 cell is charged below freezing. The battery still delivers power in cold conditions, but its rated discharge range runs from -4°F to 140°F, and usable capacity drops as temperatures fall well below freezing; the low-temp protection specifically prevents \u003cem\u003echarging\u003c\/em\u003e below freezing.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eHeated (12100DPH-G24)\u003c\/strong\u003e version adds a smart heater for cold-weather charging: connected to a charger, if internal temperature drops to 32°F the heater warms the battery to 34°F, then charging resumes automatically. The heater runs only while a charger is connected. If you fish, store, or charge in freezing conditions, the Heated variant removes the guesswork.\u003c\/p\u003e\n\u003c!-- ================= TAB 7: TROLLING MOTORS ================= --\u003e\n\u003ch4\u003eTrolling motors (24V \/ 36V)\u003c\/h4\u003e\n\u003cp\u003eThis battery is designed as a 12V cranking and house battery. For a \u003cstrong\u003e24V or 36V trolling motor\u003c\/strong\u003e, the cleanest setup is a dedicated Millertech 24V or 36V trolling battery sized to your motor, kept separate from the starting battery. That is how most owners run it: one Dual Purpose for the boat, a separate higher-voltage battery for the trolling motor.\u003c\/p\u003e\n\u003cp\u003eSome anglers do wire two 12V 100Ah Dual Purpose batteries in series to build a 24V bank. If that is your plan, \u003cstrong\u003econfirm the exact series\/parallel configuration and limits with Millertech before wiring\u003c\/strong\u003e, and always use identical batteries (same model, capacity, and age) with proper fusing. Contact us and we'll confirm the right configuration for your motor.\u003c\/p\u003e\n\u003c!-- ================= TAB 8: INSTALLATION ================= --\u003e\n\u003ch4\u003eInstallation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment.\u003c\/strong\u003e This is a true BCI Group 24 (10.23″ x 6.61″ x 8.35″) and drops into standard Group 24 trays. A matching tray is available if you need one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals.\u003c\/strong\u003e Heavy-duty M8 bolts and washers in 18-8 stainless. Torque terminal connections to 10 ft-lbs. If you are stacking multiple lugs, you may need to remove a washer or use a slightly longer bolt to fully seat into the copper pillar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation and mounting.\u003c\/strong\u003e Seat the battery in the tray and secure with hold-down straps; the case has molded strap grooves to keep straps in place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring.\u003c\/strong\u003e Use correctly sized cables and fuse\/breaker protection appropriate to your loads. Connect electronics and accessories to the battery through a fused distribution point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApp.\u003c\/strong\u003e Download the Millertech Bluetooth app to monitor charge percentage, voltage, current, and temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ================= TAB 9: SPECIFICATIONS ================= --\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"lbs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eStandard (12100G24-DP)\u003c\/th\u003e\n\u003cth\u003eHeated (12100DPH-G24)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e100Ah\u003c\/td\u003e\n\u003ctd\u003e100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy storage\u003c\/td\u003e\n\u003ctd\u003e1.28 kWh\u003c\/td\u003e\n\u003ctd\u003e1.28 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal voltage\u003c\/td\u003e\n\u003ctd\u003e12.8V\u003c\/td\u003e\n\u003ctd\u003e12.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry \/ cell type\u003c\/td\u003e\n\u003ctd\u003eLiFePO4 \/ prismatic\u003c\/td\u003e\n\u003ctd\u003eLiFePO4 \/ prismatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCold Cranking Amps (CCA)\u003c\/td\u003e\n\u003ctd\u003e1000A\u003c\/td\u003e\n\u003ctd\u003e1000A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak discharge (up to 5 sec)\u003c\/td\u003e\n\u003ctd\u003e300A\u003c\/td\u003e\n\u003ctd\u003e300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous charge \/ discharge\u003c\/td\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended charge current\u003c\/td\u003e\n\u003ctd\u003e25A\u003c\/td\u003e\n\u003ctd\u003e25A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e14.6V\u003c\/td\u003e\n\u003ctd\u003e14.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFloat voltage\u003c\/td\u003e\n\u003ctd\u003e13.4V\u003c\/td\u003e\n\u003ctd\u003e13.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e10V (any cell 2.5V)\u003c\/td\u003e\n\u003ctd\u003e10V (any cell 2.5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended low-voltage disconnect\u003c\/td\u003e\n\u003ctd\u003e12.0V\u003c\/td\u003e\n\u003ctd\u003e12.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temp range (low-temp protection)\u003c\/td\u003e\n\u003ctd\u003e25°F to 131°F\u003c\/td\u003e\n\u003ctd\u003e25°F to 131°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelf-heating\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes (32°F trigger on charger, warms to 34°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge \/ operating temp range\u003c\/td\u003e\n\u003ctd\u003e-4°F to 140°F\u003c\/td\u003e\n\u003ctd\u003e-4°F to 140°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003e98%\u003c\/td\u003e\n\u003ctd\u003e98%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelf-discharge\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 4% \/ month\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 4% \/ month\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory effect\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminals\u003c\/td\u003e\n\u003ctd\u003eM8 18-8 stainless, 10 ft-lbs\u003c\/td\u003e\n\u003ctd\u003eM8 18-8 stainless, 10 ft-lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase\u003c\/td\u003e\n\u003ctd\u003eSealed IP65, rubber gasket, stainless breather vent\u003c\/td\u003e\n\u003ctd\u003eSealed IP65, rubber gasket, stainless breather vent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGroup size\u003c\/td\u003e\n\u003ctd\u003eBCI Group 24\u003c\/td\u003e\n\u003ctd\u003eBCI Group 24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e10.23″ x 6.61″ x 8.35″\u003c\/td\u003e\n\u003ctd\u003e10.23″ x 6.61″ x 8.35″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e31 lbs\u003c\/td\u003e\n\u003ctd\u003e31 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"lbs-note\"\u003eSpecifications per Millertech published data sheets. Confirm against the current manufacturer manual for your exact SKU.\u003c\/p\u003e\n\u003c!-- ================= TAB 10: AGM VS MILLERTECH ================= --\u003e\n\u003ch4\u003eAGM vs. Millertech lithium\u003c\/h4\u003e\n\u003ctable class=\"lbs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003eTypical AGM Group 24\u003c\/th\u003e\n\u003cth\u003eMillertech 100Ah Dual Purpose\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsable capacity\u003c\/td\u003e\n\u003ctd\u003e~50% of rated\u003c\/td\u003e\n\u003ctd\u003eNearly all of rated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage under load\u003c\/td\u003e\n\u003ctd\u003eSags as it drains\u003c\/td\u003e\n\u003ctd\u003eStays flat deep into discharge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~40-45 lb\u003c\/td\u003e\n\u003ctd\u003e31 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge speed\u003c\/td\u003e\n\u003ctd\u003eSlower\u003c\/td\u003e\n\u003ctd\u003eFast, no memory effect\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaintenance\u003c\/td\u003e\n\u003ctd\u003ePeriodic\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMonitoring\u003c\/td\u003e\n\u003ctd\u003eExternal meter\u003c\/td\u003e\n\u003ctd\u003eBuilt-in Bluetooth app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eTypically 1-4 years\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- ================= TAB: FAQ ================= --\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"lbs-faqgroup\"\u003e\n\u003ch4\u003eChoosing the right size: 100Ah vs 135Ah\u003c\/h4\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q1\"\u003e\u003clabel for=\"q1\"\u003eIs a 100Ah lithium battery enough for my boat?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eFor most anglers running one or two graphs and a forward-facing sonar unit, plus starting the outboard, 100Ah is plenty for a full day. If you run four or more large graphs with multiple FFS units and heavy livewell aeration all day, step up to the 135Ah (1500 CCA) for more reserve.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q2\"\u003e\u003clabel for=\"q2\"\u003eWhat is the difference between the Millertech 100Ah and 135Ah Dual Purpose?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eBoth are dual-purpose LiFePO4 batteries with Bluetooth, a BMS, and a 10-year warranty. The 100Ah is a compact \u003cstrong\u003eGroup 24\u003c\/strong\u003e case, \u003cstrong\u003e1000 CCA\u003c\/strong\u003e, 31 lb, at a lower price. The 135Ah is a larger \u003cstrong\u003eGroup 31\u003c\/strong\u003e case, \u003cstrong\u003e1500 CCA\u003c\/strong\u003e, 33 lb, with more capacity and cranking headroom. Choose by your tray size, electronics load, and engine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q3\"\u003e\u003clabel for=\"q3\"\u003eShould I buy the 100Ah or the 135Ah?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eBuy the 100Ah if you have a Group 24 tray, a lighter electronics load, or want a lower entry price or a secondary battery. Buy the 135Ah if you run a heavy tournament electronics spread, crank the largest outboards, or want the longest possible day on the water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q4\"\u003e\u003clabel for=\"q4\"\u003eHow many fish finders can the 100Ah run?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eAs a rough guide, each large graph or forward-facing sonar module draws about 2-3A. At 100Ah, that comfortably supports a couple of graphs plus a forward-facing sonar unit through a typical day. Livewell aerators add meaningful draw, so factor those in.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q5\"\u003e\u003clabel for=\"q5\"\u003eIs the 100Ah a good secondary or kicker starting battery?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. Its compact Group 24 size and 1000 CCA make it a strong dedicated cranking or electronics battery on boats that already have a main house bank, or a kicker-motor battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faqgroup\"\u003e\n\u003ch4\u003eFitment \u0026amp; Group 24\u003c\/h4\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q6\"\u003e\u003clabel for=\"q6\"\u003eWill the 100Ah fit a Group 24 battery tray?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. It is a true BCI Group 24 at 10.23″ x 6.61″ x 8.35″ and drops into standard Group 24 trays. A matching tray is available if you need one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q7\"\u003e\u003clabel for=\"q7\"\u003eWhat are the dimensions and weight of the Millertech 100Ah?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eIt measures 10.23″ x 6.61″ x 8.35″ and weighs 31 lb roughly 10-15 lb lighter than a comparable Group 24 AGM.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q8\"\u003e\u003clabel for=\"q8\"\u003eCan this replace my Group 24 lead-acid or AGM battery?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. It is a drop-in 12V replacement for a Group 24 lead-acid or AGM battery, with more usable capacity, flatter voltage, and far less weight. Use a lithium-compatible charger.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q9\"\u003e\u003clabel for=\"q9\"\u003eIs the 100Ah physically smaller than the 135Ah?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. The 100Ah is Group 24 (10.23″ x 6.61″ x 8.35″), noticeably more compact than the 135Ah's Group 31 case (13″ x 6.75″ x 9″), which is why it suits tighter battery boxes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faqgroup\"\u003e\n\u003ch4\u003eStarting \u0026amp; cranking\u003c\/h4\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q10\"\u003e\u003clabel for=\"q10\"\u003eCan the 100Ah start my outboard and run electronics at the same time?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes, that is the dual-purpose design. Its 1000 CCA and 300A peak crank the motor, and its 100Ah of deep-cycle capacity runs your graphs, pumps, and accessories from the same battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q11\"\u003e\u003clabel for=\"q11\"\u003eIs 1000 CCA enough to start my outboard?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003e1000 CCA starts a wide range of outboards. For the largest high-horsepower motors, or if you want maximum cranking headroom, the 135Ah (1500 CCA) is the stronger choice. Always confirm your engine permits a lithium starting battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q12\"\u003e\u003clabel for=\"q12\"\u003eWill it start a Yamaha, Suzuki, or Honda outboard?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eIt has the cranking power, but Yamaha, Suzuki, and Honda have generally not approved lithium starting batteries, or set specific conditions. Confirm with your engine maker first; if in doubt, run an AGM cranking battery with a lithium house battery and a DC-DC charger.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faqgroup\"\u003e\n\u003ch4\u003eRuntime \u0026amp; electronics\u003c\/h4\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q13\"\u003e\u003clabel for=\"q13\"\u003eHow long will the 100Ah run my electronics?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eRoughly 11-13 hours on a light setup (a couple of graphs and one FFS), around 7-8 hours on a moderate setup (three graphs, FFS, intermittent livewell), and about 5-6 hours on a heavy setup. Estimates vary with your gear, screen brightness, and pump duty cycle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q14\"\u003e\u003clabel for=\"q14\"\u003eCan it power LiveScope, Mega Live, or ActiveTarget?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. It powers forward-facing sonar and networked graphs with stable voltage, so screens stay lit and connected deep into the discharge a common weak point for lead-acid batteries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q15\"\u003e\u003clabel for=\"q15\"\u003eWill a 100Ah battery last a full day of fishing?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eFor typical loads, yes. If you fish very long days with a heavy electronics spread and constant aeration, plan your reserve carefully or choose the 135Ah for extra margin.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faqgroup\"\u003e\n\u003ch4\u003eCharging\u003c\/h4\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q16\"\u003e\u003clabel for=\"q16\"\u003eWhat charger do I need for the Millertech 100Ah?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eUse a lithium (LiFePO4) charger built for a 14.6V profile. Recommended charge current is about 25A; the battery accepts up to 100A. A lead-acid or AGM charger with high absorption or equalization voltage can trip the BMS turn equalization off.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q17\"\u003e\u003clabel for=\"q17\"\u003eHow long does it take to charge a 100Ah lithium?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eWith a 20A charger, roughly 5-6 hours from low to full; with a 10A charger, about 10-12 hours. Faster chargers recharge sooner, which is handy for same-day turnaround.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q18\"\u003e\u003clabel for=\"q18\"\u003eCan I charge it from my outboard alternator while running?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eOn engines that permit lithium starting batteries, yes. Because lithium draws high charge current, confirm your specific engine is approved (Mercury covers this in a service bulletin) and add a DC-DC charger where required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q19\"\u003e\u003clabel for=\"q19\"\u003eCan I use a NOCO or my existing marine charger?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes, if it has a true lithium\/LiFePO4 mode. Many marine chargers, including NOCO Genius models, offer a selectable lithium profile. Avoid charging on a lead-acid-only profile.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faqgroup\"\u003e\n\u003ch4\u003eCold weather \u0026amp; the Heated version\u003c\/h4\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q20\"\u003e\u003clabel for=\"q20\"\u003eWhat is the difference between the heated and non-heated 100Ah?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eThey are identical batteries except the Heated (12100DPH-G24) adds a smart heater for cold-weather charging: connected to a charger, if the internal temperature drops to 32°F it warms the battery to 34°F before charging resumes. The heater runs only while a charger is connected.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q21\"\u003e\u003clabel for=\"q21\"\u003eDo I need the heated version?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eChoose Heated if you charge, launch, or store the battery in sub-freezing conditions. In warm climates the Standard (12100G24-DP) is all most boaters need.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q22\"\u003e\u003clabel for=\"q22\"\u003eCan I charge it in freezing temperatures?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eThe BMS blocks charging below freezing to protect the cells (charge range 25°F-131°F). The battery still delivers power in the cold. For uninterrupted cold-weather charging, the Heated version warms itself first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faqgroup\"\u003e\n\u003ch4\u003eWiring \u0026amp; applications\u003c\/h4\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q23\"\u003e\u003clabel for=\"q23\"\u003eCan I wire two 100Ah batteries in series for a 24V trolling motor?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eSome owners build 24V banks from two 12V batteries, but confirm the exact series configuration and limits with Millertech before wiring, and use identical batteries with proper fusing. For trolling motors, a dedicated Millertech 24V or 36V battery is usually the cleaner solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q24\"\u003e\u003clabel for=\"q24\"\u003eCan I connect two 100Ah in parallel for more capacity?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eConfirm parallel limits with Millertech first. If allowed, use identical batteries (same model, capacity, and age) with correct fusing. Two in parallel double capacity at 12V.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q25\"\u003e\u003clabel for=\"q25\"\u003eCan I use the 100Ah for an RV, solar, or off-grid setup?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. It works as a compact 12V dual-purpose battery for RVs, off-grid, and solar. Charge it with a lithium-compatible charger or solar controller set to a LiFePO4 profile.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faqgroup\"\u003e\n\u003ch4\u003ePrice, warranty \u0026amp; buying\u003c\/h4\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q26\"\u003e\u003clabel for=\"q26\"\u003eHow much does the Millertech 100Ah cost?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eThe Standard (12100G24-DP) is $699 and the Heated (12100DPH-G24) is $749, with free shipping. It is priced below the larger 135Ah, making it the value entry point into Millertech dual-purpose lithium.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q27\"\u003e\u003clabel for=\"q27\"\u003eWhat warranty comes with the Millertech 100Ah?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eA 10-year limited manufacturer warranty. If the battery fails within that period, Millertech repairs or replaces it with one of equal or greater value, and covers shipping. No proof of purchase is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q28\"\u003e\u003clabel for=\"q28\"\u003eIs this a genuine Millertech battery, and where does it ship from?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. Every unit is a genuine Millertech battery with full manufacturer-backed warranty, shipping free from Millertech's U.S. facility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q29\"\u003e\u003clabel for=\"q29\"\u003eIs the 100Ah maintenance-free?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. There is no watering, no equalization, and no acid maintenance. Keep the terminals clean and connections tight, use a lithium charger, and store it charged in a cool, dry place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lbs-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"q30\"\u003e\u003clabel for=\"q30\"\u003eDoes the 100Ah have Bluetooth monitoring?\u003c\/label\u003e\n\u003cdiv class=\"lbs-a\"\u003e\n\u003cp\u003eYes. The built-in Bluetooth connects to the Millertech app to show state of charge, voltage, current, and temperature, and lets you monitor multiple batteries at once.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ================= TAB: WHY BUY FROM US ================= --\u003e\n\u003ch3\u003eWhy Buy From Us\u003c\/h3\u003e\n\u003cp\u003eChoosing a $900+ lithium marine battery is about more than picking specs, it's about matching the right battery to your boat, engine, electronics, and charging system, and knowing someone has your back if a question comes up. That's where we come in.\u003c\/p\u003e\n\u003ch4\u003eWe help you choose the right battery\u003c\/h4\u003e\n\u003cp\u003eNo two boats are set up the same way. Before you order, we can walk through your boat make and model, engine and horsepower, tray dimensions, number of displays, forward-facing sonar, trolling motor voltage, existing charger, and climate. Our goal isn't to sell you the biggest battery, it's to match the battery to your application, and to tell you plainly if a different configuration fits better.\u003c\/p\u003e\n\u003ch4\u003eSupport before and after the sale\u003c\/h4\u003e\n\u003cp\u003eReach out before ordering and we'll review your setup. We can help with choosing the right model, Standard vs. Heated, charger compatibility, Group 24 tray fitment, charging questions, basic installation guidance, product registration, and warranty support. Most questions come after installation, when you add another graph, upgrade a charger, or plan future electronics and we're here for those too.\u003c\/p\u003e\n\u003ch4\u003eGenuine, warranty-backed products\u003c\/h4\u003e\n\u003cp\u003eEvery Millertech battery we sell is a genuine, current-version product with full manufacturer-backed warranty coverage and original documentation. Millertech's 10-year warranty requires no proof of purchase and covers shipping both ways.\u003c\/p\u003e\n\u003ch4\u003eFast, secure shipping\u003c\/h4\u003e\n\u003cp\u003eYour battery ships securely packaged with tracking provided once your order is processed. Shipping is free.\u003c\/p\u003e\n\u003ch4\u003eStill not sure it's the right fit?\u003c\/h4\u003e\n\u003cp\u003eContact us before you order and we'll review your boat, engine, charger, electronics, sonar, trolling motor, climate, and any planned upgrades, then recommend the configuration that fits your setup. We'd rather help you get the right battery than sell you the wrong one.\u003c\/p\u003e\n\u003ch4\u003eWhat's included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMillertech 12V 100Ah Dual Purpose battery (Standard or Heated variant selected)\u003c\/li\u003e\n\u003cli\u003eTerminal hardware (M8 18-8 stainless bolts and washers)\u003c\/li\u003e\n\u003cli\u003eBluetooth app access (iOS and Android)\u003c\/li\u003e\n\u003cli\u003eProduct manual and warranty documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Millertech","offers":[{"title":"Standard","offer_id":48244449935618,"sku":"12100DP-G24","price":699.0,"currency_code":"USD","in_stock":true},{"title":"Heated","offer_id":48244449968386,"sku":"12100DPH-G24","price":749.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0723\/3660\/5442\/files\/Millertech_12V_100Ah_Marine_Dual_Purpose.png?v=1785697971","url":"https:\/\/www.lithiumbatterysupply.com\/products\/millertech-12v-100ah-dual-purpose-lithium-marine-battery","provider":"Lithium Battery Supply","version":"1.0","type":"link"}