Eco Battery GEN3 48V 105Ah Thru-Hole Lithium Bundle is a complete lithium iron phosphate (LiFePO4) conversion kit designed for the Yamaha Drive (G29) and Drive2 golf cart. It replaces your entire set of lead-acid batteries typically six 8-volt units with a single 98 lb lithium pack. Everything needed for a complete installation is included in the box based on your year selection: battery, CAN charger, 12V DC converter, LCD state-of-charge meter, locking charge port, mounting hardware, and remote wake-up button.

Consistent power from the first hole to the last. Lead-acid batteries lose voltage as they discharge the cart slows down on hills and feels tired by the back nine. LiFePO4 chemistry holds a flat voltage curve from a full charge all the way down to near-empty. The cart performs the same at 20% charge as it does at 90%.

Your factory Yamaha OBC charger is replaced by the included CAN charger. The Yamaha Drive and Drive2 use a factory on-board charger (OBC) designed for lead-acid batteries. LiFePO4 requires a different charge profile the OBC is disconnected during installation and replaced by the included 15A CAN charger. The CAN charger communicates directly with the battery's BMS in real time for safe, precise charging every cycle. Step-by-step OBC bypass instructions are included.

Zero maintenance from the day you install it. No watering, no acid checks, no corrosion cleaning, no equalization charges. The BMS monitors and balances every cell automatically. Firmware updates are delivered wirelessly through the Eco Battery mobile app via Bluetooth the battery improves over time without any action from you.

Register your battery within 60 days of purchase at ecobattery.com/register to activate the full-duration limited warranty. Batteries not registered within 60 days carry a 1-year limited warranty only.

Features

• Compatible with Yamaha Drive / G29 (2007–2010) and Yamaha Drive / G29 (2011+) including Drive2 (2017 and newer) same GEN3 battery across both year ranges. Mounting hardware and charge port are year-specific and included based on your selection.
• Single-battery replacement one 98 lb unit replaces the full lead-acid bank, reducing compartment weight by over 200 lbs and simplifying the battery area to a single connection point.
• Grade-A prismatic LiFePO4 cells lithium iron phosphate chemistry, thermally stable and non-combustible under normal operating conditions. Certified to UN38.3 and UL1642 Cell standards.
• 5,376Wh of usable energy 105Ah at 51.2V nominal. Driving range of approximately 40 to 45 miles per charge under typical conditions. Reserve capacity is 252 minutes at a 25A draw.
• Flat voltage discharge curve consistent power output from full charge to near-empty. No power drop on hills, no sluggishness on the back nine.
• IP67-rated enclosure sealed against dust and capable of withstanding temporary water immersion. Suitable for all-weather use. Do not pressure wash.
• Powder-coated steel shell durable construction rated for the vibration and physical demands of golf cart use on varied terrain.
• Proprietary Eco Battery BMS monitors and protects against pack over-voltage, pack under-voltage, cell under-voltage, cell over-temperature, BMS over-temperature, short circuit, and over-current. Charging freeze protection activates below 32°F.
• Power Save Mode the battery automatically enters Power Save Mode after extended inactivity to prevent full depletion. At 20–100% charge, Power Save activates after 7 days. At 0–19% charge, Power Save activates after 24 hours. Press the wake-up button or power button to exit.
• CAN communication protocol real-time data exchange between battery and charger for precision charge management and accurate state-of-charge reporting.
• Bluetooth connectivity and over-the-air firmware updates pair with the free Eco Battery mobile app (iOS and Android) to monitor voltage, state of charge, current, and cell temperature. Firmware updates are delivered wirelessly.
• LCD state-of-charge meter included displays battery voltage, SOC percentage (color-coded: green 100–50%, white 49–20%, red 19–0%), and charge/discharge current in real time. No calibration required data comes directly from the BMS.
• Remote wake-up button included powers the battery on or wakes it from Power Save Mode without accessing the battery compartment. Can only turn the battery ON for safety cannot turn it OFF.
• Auto charger wake-up battery wakes automatically when the charger is connected.
• Low self-discharge rate 1% per month. Store seasonally without significant charge loss. Charge at least once every 6 months during storage.
• Parallel connectable up to two units can be connected in parallel for extended range.
• Zero maintenance no watering, no equalization charges, no terminal cleaning, no acid management.
• Patented design US Patent D975,644 S and US D1,001,070 S.

What's Included

This is a complete bundle. Every component for a standard stock Yamaha Drive or Drive2 installation is included. The battery is the same across both year variants. The charge port and mounting kit differ by year range as shown below.

The free Eco Battery mobile app (iOS and Android) is required to access Bluetooth monitoring, real-time cell data, and over-the-air firmware updates. Visit ecobattery.com/quickstart for installation guides and additional resources. Register your battery at ecobattery.com/register within 60 days of purchase to activate the full-duration limited warranty.

Tech Specs

Compatibility

This bundle is compatible with the following Yamaha golf cart year ranges. The battery is identical across both. Only the charge port and mounting hardware differ.

What about Yamaha G1 through G16?

Yamaha G1 through G16 carts (produced 1979 to approximately 2002) are 36-volt systems. They are not compatible with this 48V / 51.2V Thru-Hole bundle. Installing this battery in a 36V cart would damage the cart's electrical system. G1–G16 owners require a completely different Eco Battery product. Contact us before ordering if you have a G1–G16.

OBC charger what happens to it:

The Yamaha Drive and Drive2 include a factory on-board charger (OBC) designed for lead-acid battery charging profiles. LiFePO4 batteries require a different charge profile and are incompatible with the OBC. During installation, the OBC is bypassed or removed from the charging circuit. The included CAN charger connects to the new locking charge port and handles all charging going forward. Instructions for this step are included in the installation guide.

This bundle does not fit:

• Yamaha G1 through G16 36V system, requires a different Eco Battery product
• Yamaha G19 / G22 requires the Eco Battery Skinny bundle
• Gas-powered Yamaha golf carts
• Yamaha carts with factory-installed OEM lithium battery systems
• EZGO, Club Car, or other brands separate model-specific bundles required

Not sure of your Yamaha model year? The serial number is on a metal plate on the driver-side frame near the battery compartment. Contact us with your serial number and we will confirm the correct variant before you order.

Use and Care

Daily use:

• Charge the battery daily to keep it fully charged and ready for use.
• The battery does not need to be turned off after each use. It is recommended to leave the power button on and the charger connected if the cart will be used within 15 days.
• Avoid running the battery below 20% state of charge. Although the BMS protects against damaging discharge, running the battery to 0% regularly is not recommended. Monitor the SOC meter just as you would a fuel gauge.
• Partial charges are acceptable at any time and do not harm the battery. LiFePO4 chemistry does not develop a memory effect — charging every night will not reduce lifespan.
• The charger is not a float charger or battery maintainer. It will not hold the battery at 100% after a charge cycle completes. If left plugged in, the battery must drop below a pre-set voltage before a new charge cycle begins. It is normal for the SOC to drop as low as 90% before the charger restarts.

Storage:

• For storage beyond 15 days: charge the battery above 50%, disconnect the charger's AC power cord, and turn the battery off using the on/off button.
• Charge the battery at least once every 6 months during extended storage.
• After long-term storage, fully charge the battery before use regardless of SOC displayed. SOC may drift during storage and a full charge is needed to re-calibrate the BMS.
• If the cart will be stored below -4°F, remove the battery from the cart and store it in a location above -4°F.

Cold weather:

• The battery discharges down to -20°F (-29°C). Driving in cold weather is supported.
• The battery will not accept a charge below 32°F. This includes plug-in charging and regenerative charging from the motor controller. The BMS freeze protection activates automatically — this is normal and protective.
• Do not drive a cart with a regenerative charging/braking system when overnight lows are below 32°F. Doing so may cause the battery to enter self-protection mode and can trigger braking system faults on certain carts.
• Performance and range decreases in cold temperatures are normal and expected. This includes shorter run times, slightly slower acceleration, and larger voltage drops under load.

Cleaning:

• Do not pressure wash the battery. Pressure washing can damage the lid seal and is not covered under the warranty policy.
• Do not use chemical cleaning agents of any kind on the battery.
• Clean the battery by blowing it off with a leaf blower or wiping it with a clean, damp cloth.

FAQs