The PowerMax 314 Outdoor is a SunGoldPower 16.07kWh lithium iron phosphate (LiFePO4) energy storage battery with 51.2V nominal voltage and 314Ah capacity, providing 15.42kWh usable energy. It is a 48V class battery for residential solar storage, off-grid and hybrid systems, backup power, and small commercial use.
The IP65 enclosure is rated for indoor and outdoor installation. It offers CAN and RS485 communication for closed-loop operation with major inverter brands and is ETL Listed to UL 1973 and UL 9540A tested. Important: verify your exact inverter model and protocol before ordering; the seller offers free compatibility checks.
16.07kWh nominal, 15.42kWh usable
With a maximum depth of discharge above 96%, 15.42kWh of the 16.07kWh total is available for daily use, so most of the capacity you buy is capacity you can use.
51.2V a 48V class battery
The 51.2V nominal voltage (44.8 - 57.6V operating range) places this battery in the widely supported 48V class used by most modern hybrid and off-grid inverters. Always confirm your specific inverter model before ordering (see the Inverter Compatibility tab).
LiFePO4 chemistry and 8,000 cycle life
Lithium iron phosphate is thermally stable and long-lived, which is why it is the common choice for stationary storage. This pack is rated for 8,000 cycles at 80% depth of discharge (0.5C, 25°C).
IP65 enclosure indoor or outdoor
The IP65 rating means the cabinet is dust-tight and protected against low-pressure water jets from any direction, and the manufacturer rates it for both indoor and outdoor operation. Follow the manual's siting rules: avoid direct sun, standing water, and salt-air or coastal exposure within about 500m of shore.
Intelligent BMS and LCD touch screen
The onboard battery management system guards against over-charge, over-discharge, over-voltage, over-current, short circuit, and high/low temperature. The LCD touch screen shows state of charge, voltage, current, temperature, and cell data, and WiFi/Bluetooth allows monitoring from the SunGoldPower app.
Applications
- Residential solar energy storage (self-consumption and time-of-use shifting)
- Off-grid homes and hybrid solar systems
- Backup power for essential circuits during outages
- Small commercial and light-industrial energy storage
- Cabins, workshops, farms, park models, and remote or telecom sites
Whole-home backup, grid export, and life-safety or medical applications require a complete system that has been properly engineered, sized, and approved for that purpose. They are not implied by the battery alone.
Runtime & Solar Recharge
Estimated runtime
These are conservative estimates using 15.42kWh usable energy and an assumed 90% inverter efficiency. They are a planning guide, not a guarantee.
Estimated runtime (hours) = 15.42 kWh usable × 0.90 inverter efficiency ÷ average load (kW)
| Continuous load |
Estimated runtime |
Within battery limits? |
| 500 W |
~27–28 hours |
Yes |
| 1,000 W |
~13–14 hours |
Yes |
| 2,000 W |
~7 hours |
Yes |
| 3,000 W |
~4.6 hours |
Yes |
| 5,000 W |
~2.8 hours |
Yes (below the 7.68 kW continuous limit) |
Every example above stays within the battery's 7.68 kW continuous output rating. Actual runtime depends on inverter efficiency, motor start-up surges, temperature, battery settings, wiring losses, battery age and condition, and how loads change over time.
Estimated solar recharge
Panel wattage alone does not determine daily production. These estimates assume about 4.5 peak-sun-hours and a ~78% system derate (inverter/MPPT losses, wiring, heat, soiling), so daily PV energy is roughly array size × 3.5 kWh per kW. Location, season, orientation, and shading will change the result.
| Solar array |
Est. daily PV energy |
Recharge outlook (from empty, good day) |
| 3.0 kW |
~10.5 kWh |
Partial roughly two-thirds of a full recharge |
| 5.0 kW |
~17.6 kWh |
About one full recharge on a strong solar day |
| 7.5 kW |
~26 kWh |
Full recharge with headroom (subject to charge-current limit) |
Charge-rate cap: the battery accepts up to 150A standard (~7.68 kW) and 190A maximum (~9.7 kW). Even with a large array, charging is limited by these currents and tapers near full, so the theoretical minimum full-charge time is around 2 hours of full-current charging under ideal conditions. Your inverter/MPPT voltage and current limits must also be checked. If your array is also powering daytime loads, less of its output is available to recharge the battery, so recharging takes longer.
Inverter Compatibility
This is a 48V-class battery with CAN and RS485 communication.
The manufacturer lists closed-loop protocol support for major brands including SunGoldPower, Growatt, Victron Energy, Goodwe, Solis, LuxPower, Sofar, SMA, Megarevo, Sol-Ark, Voltronic, Afore, KStar, and Pylon and Pace protocols; brand materials also reference EG4, Schneider, MPP Solar, and Deye.
Support and required settings vary by exact model and firmware, so confirm the following before ordering:
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48V class support, your inverter accepts a 51.2V nominal (44.8 - 57.6V) battery.
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Charge parameters, 57.6V max charge, 44.8V cutoff, and current limits match your inverter settings.
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Communication, your inverter supports CAN or RS485 with a matching protocol.
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Closed-loop vs open-loop, whether your inverter runs closed-loop or must be set up open-loop with manual voltage settings.
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Current and power limits, your continuous inverter current stays within the battery's ratings (a busbar is required if it does not).
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Firmware, your inverter firmware is current enough for closed-loop operation.
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Parallel plan, how many batteries you will run (up to 16) and the address/DIP-switch and cabling setup.
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Protection and wiring required breakers, disconnects, fuses, busbars, and correctly sized conductors per code.
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Siting and permitting indoor/outdoor rules and local permitting in your jurisdiction.
Send us your inverter before ordering. Tell us your inverter brand and exact model and we will help verify compatibility, protocol, and settings so you order the right configuration the first time.
Specifications
| Model |
PowerMax 314 Outdoor |
| Nominal (nameplate) energy |
16.07kWh |
| Usable energy |
15.42kWh |
| Nominal voltage |
51.2V (48V class) |
| Operating voltage range |
44.8 - 57.6 Vdc |
| Rated capacity |
314Ah |
| Battery chemistry |
LiFePO4 / LFP |
| Max. depth of discharge |
>96% |
| Rated (standard) charge / discharge current |
150A / 150A |
| Rated continuous DC output |
7.68 kW (at 150A) |
| Maximum charge / discharge current |
190A / 190A (short-duration limit, above the rated 7.68 kW continuous output) |
| Peak charge / discharge current |
220A for 3 seconds |
| Internal breaker current |
240A |
| Max. charge voltage |
57.6V |
| Over-discharge (cutoff) voltage |
44.8V |
| Cycle life |
8,000 cycles (80% DoD, 0.5C, 25°C) |
| BMS protections |
Over-charge, over-discharge, over-voltage, over-current, short circuit, high-temp, low-temp |
| Communication interfaces |
CAN / RS485 / USB / WiFi / Bluetooth |
| Display / monitoring |
LCD touch screen, LED SOC indicator, WiFi/Bluetooth app |
| Cooling method |
Natural (passive) cooling |
| Enclosure protection rating |
IP65 |
| Operation environment |
Indoor & Outdoor |
| Charging temperature range |
0 to 55°C (32 to 131°F) |
| Discharging temperature range |
-10 to 55°C (14 to 131°F) |
| Dimensions (L × W × H) |
1048 × 460 × 271 mm (41.26 × 18.11 × 10.67 in) |
| Weight |
123 kg (271 lb) |
| Mounting method |
Floor mount or wall mount (frame + M8 expansion bolts; wall thickness > 80 mm) |
| Max. number in parallel |
Up to 16 units (parallel only, never in series) |
| Standards & listings |
ETL Listed (Intertek) to ANSI/CAN/UL 1973:2022 Ed.3 (cETLus, US & Canada); UL 9540A tested; UN38.3, MSDS, EN55032/55024, EN61000-3-2/-3-3; CEC Listed (manufacturer-stated) |
Specifications are from the manufacturer datasheet and V3.0 user manual and may be updated by the manufacturer without notice.
What's Included
In the box with the battery
- 1 × PowerMax 16.07kWh battery pack
- 3 × mounting frame, 1 × frame connecting strip, 2 × side fasteners
- Mounting hardware: 12 × M8×60 expansion bolts, 6 × M4×10 screws, 4 × M5×12 screws
- 2 × power cables (1.5 m) and 1 × signal cable (RJ45, 1.5 m)
- 1 × RJ45 waterproof connector
- 1 × grounding wire (1.5 m)
- 1 × installation auxiliary (drilling) board
Required or possibly required, sold separately
- Compatible 48V-class hybrid or off-grid inverter
- PV input cable (manufacturer recommends 6 mm² / 10 AWG) user-supplied
- Parallel connection cables and/or busbar for multi-battery systems (optional)
- System overcurrent protection, disconnects, fuses, and correctly sized conductors per code
Have ready before we size your system
- Inverter brand and exact model (and firmware if known)
- Your daily energy use and the loads you want to back up
- Solar array size or plans, and indoor/outdoor install location
Certifications
UL 1973 (ETL Listed)
UL 1973 is the safety standard for batteries used in stationary energy-storage applications, covering the battery's electrical, mechanical, thermal, and environmental safety. The PowerMax 314 Outdoor is ETL Listed by Intertek, an OSHA-recognized testing laboratory, to ANSI/CAN/UL 1973:2022 (Edition 3), carrying the cETLus mark for the United States and Canada (certificate issued April 13, 2026). The ETL Mark is a third-party listing mark equivalent in acceptance to the UL Mark; it is issued by Intertek rather than by UL. This listing applies to the battery itself and does not by itself approve a complete installed system.
UL 9540A tested
UL 9540A is a fire-safety test method that measures how a battery behaves during thermal runaway (heat and fire propagation). "UL 9540A tested" means this data exists for authorities and installers to use when deciding placement and spacing. It is not the same as "UL 9540 certified," which certifies a complete energy-storage system (battery, inverter, and controls). This product is UL 9540A tested; it is not a UL 9540 system certification.
CEC Listed
A CEC listing means equipment appears on a California Energy Commission list, which can matter for California incentive programs and code compliance. The manufacturer lists this battery as CEC Listed. As with any listing, a battery-level listing does not automatically approve a full installed system.
Warranty & Support
This battery is supported by a manufacturer-stated 10-year limited warranty. Coverage applies to the original purchaser and requires proof of purchase; damage from misuse, unauthorized modification, improper installation, or use outside the manufacturer's published specifications is not covered. We will confirm the current warranty document with you before purchase. For full details read our Warranty Tab
Before you buy
Send us your inverter brand and exact model and we will help verify compatibility, protocol, and settings so you order the correct configuration. We can also help you size the number of batteries and protection your loads require.
After your purchase
We stay reachable for setup questions, monitoring, protocol settings, and warranty assistance. If you ever need to file a claim, contact us and we will help coordinate it with the manufacturer.
Frequently Asked Questions
What does 16.07kWh mean?
16.07kWh is the battery's nominal (nameplate) energy, how much energy it stores in total. Mathematically, 51.2V × 314Ah is about 16.08kWh; the manufacturer markets it as 16.07kWh, and the small difference is rounding. About 15.42kWh of the total is usable.
How long can a 16.07kWh battery run a house?
It depends on your load. Using 15.42kWh usable and about 90% inverter efficiency: roughly 13–14 hours at a 1,000W draw, about 7 hours at 2,000W, and about 2.8 hours at 5,000W. Most homes back up essential circuits rather than the whole house, or add batteries in parallel.
Is 51.2V considered a 48V battery?
Yes. 51.2V is the nominal voltage of a 16-cell LiFePO4 pack and falls within the 48V class supported by most hybrid and off-grid inverters. Its operating range is 44.8 - 57.6V.
Which inverters work with this battery?
It uses CAN and RS485 communication and lists closed-loop support for major 48V-class brands including SunGoldPower, Growatt, Victron, Goodwe, Solis, LuxPower, Sofar, SMA, Megarevo, and Sol-Ark. Support and settings vary by exact model and firmware, so send us your inverter model and we will confirm before you order.
Can multiple batteries be connected in parallel?
Yes, up to 16 units in parallel (never in series), each with a unique address set via DIP switch. Parallel connection expands capacity; power is governed by your inverter, and a busbar is required if inverter current exceeds the battery's rated current.
Is it suitable for outdoor installation?
Yes. The manufacturer rates it for both indoor and outdoor use with an IP65 enclosure. Avoid direct sunlight, standing water, and salt-air or coastal exposure within about 500m of shore, and follow the manual's siting and temperature guidance.
Is it waterproof?
It is IP65 rated dust-tight and protected against low-pressure water jets from any direction. That is weather-resistant, not submersible. Do not install it where it can sit in water or be hit by high-pressure spray.
What is its maximum continuous output?
The battery's rated continuous DC output is 7.68 kW (at 150A). The BMS allows a higher maximum current of 190A for shorter durations, plus a 3-second peak of 220A. Your usable continuous power is also limited by your inverter's rating.
Can it start an air conditioner?
The battery supports a 3-second peak of 220A (roughly 11 kW) to help with motor start-up surges. Whether a specific air conditioner starts and runs depends on your inverter's surge and continuous ratings, not the battery alone. Share your AC and inverter specs and we will help you check.
How long does solar take to recharge it?
As an estimate, a 5 kW array producing about 17–18 kWh on a strong solar day can roughly refill it from empty. Charging is capped by the battery's charge current (150A standard, 190A max) and tapers near full. Real results depend on sun hours, location, and system losses.
What does UL 1973 mean?
UL 1973 is the safety standard for stationary energy-storage batteries. The PowerMax 314 Outdoor is ETL Listed by Intertek to ANSI/CAN/UL 1973:2022 (cETLus, United States and Canada) a third-party listing equivalent to the UL Mark. It applies to the battery, not to your complete installed system.
Is UL 9540A the same as UL 9540 certification?
No. UL 9540A is a fire-safety test method that measures thermal-runaway behavior; "tested" means that data exists. UL 9540 is a system-level certification for a complete energy-storage system. This battery is UL 9540A tested, not UL 9540 system-certified.
What does CEC Listed mean?
It means the equipment appears on a California Energy Commission list, which can matter for California incentive programs and code compliance. The manufacturer lists this battery as CEC Listed. A battery listing does not automatically approve a whole installed system.
What protection equipment is required?
A compliant install typically needs an appropriately rated DC disconnect, overcurrent protection (breakers or fuses), correctly sized conductors, proper grounding, and for multi-battery systems a busbar and parallel cabling. All of it must follow the manufacturer's instructions and your local electrical code, installed by a qualified professional.
What information should I send before ordering?
Your inverter brand and exact model (plus firmware if known), the loads you want to back up, your daily energy use, your solar array size or plans, and your install location (indoor or outdoor). With that, we can confirm compatibility and size the system correctly.
Can I install it myself?
It can be floor or wall mounted, but the electrical connections should be made by a qualified electrician or solar installer per the manual and local code. It weighs 123 kg (271 lb), so plan for multiple people and safe lifting.
How is such a heavy battery shipped?
It ships by freight on a pallet. Please make sure your delivery location can accept freight. Message us with your address and we will confirm delivery options and any access requirements before you order.
Does it include everything I need to connect to my inverter?
It includes power and signal cables, a grounding wire, and mounting hardware. You will still need a compatible inverter, PV cabling (6 mm² / 10 AWG), and code-required protection and disconnects plus a busbar and parallel cables if you run multiple units.
