POWERWIN BT5120 51.2V 100Ah 5120Wh Battery 2 Pack 10240Wh


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  • Grade-A LiFePO4 battery & BMS System
  • Ultimate power for heavy duty
  • Sealed battery, maintenance-free
  • Up to 15000 Cycles (60% DoD)
  • Up to 20.48KWh parallel connection
  • Multi-functional, UPS & Solar Power Support
  • Stock Available in the US

Out of stock

POWERWIN BT5120 51.2V 100Ah LiFePO4 Battery 2 Pack


Unparalleled Performance

Boasting Grade-A Lithium Battery technology, this battery is engineered for excellence, ensuring long-lasting, reliable power when you need it most.

Grade-A Lithium Battery



Infinite Reliability

With an astonishing 4000 to 15000 cycles, featuring a cutting-edge Built-in Battery Management System (BMS) with A.I. Real-time Protection, you can trust that your valuable equipment is safeguarded against potential hazards.

51.2V 100Ah BMS


5120Wh of Independent Energy

Need a robust power source that won't let you down? Look no further. Our 5120Wh independent energy powerhouse will keep your devices running smoothly, no matter the demand.

51.2V 100Ah LFP battery


Universal Compatibility

Designed to seamlessly integrate with most 48V inverters, this LiFePO4 battery ensures a hassle-free setup for your energy needs. Versatility meets convenience.
100Ah energy storage
The Voltage You Need
With 51.2V of rated voltage, this LiFePO4 battery is the perfect companion for your UPS module. You'll never have to worry about power interruptions again.
Powerful in Performance

Experience the benefits of clean, reliable power, and ensure your solar energy system operates at its peak efficiency. Power up your life with our high-performance LFP battery.

POWERWIN battery series



COLOR Space Gray
TYPE LFP (Lithium Iron Phosphate)
LIFE CYCLES 15000+ Cycles to 60% DoD
SHELF-LIFE Recharge to 80% Every 3-6 Months
MANAGEMENT SYSTEM Battery Management System






100A in 5 seconds. (25℃ / 77℉)


Charge: 0~45℃ / 32~113℉

Discharge: -20~60℃ / -4~140℉

Storage: -10~45℃ / 14~113℉


12 Months



1×BT5120 LiFePO4 Battery
1×User Manual







Return Policy

POWERWIN offers a 30-day return policy, which means you have 30 days after receiving your item to request a return. If 30 days have gone by since the delivery day, unfortunately, we can’t offer you a refund or exchange.

Undamaged products may be returned for a refund within 30 days of the date of being delivered. Once the returned item arrives back in POWERWIN’s warehouse for inspection, the refund process will begin.

  • Returns must include all accessories
  • Items must include original packaging.
  • For non-quality related warranty claims, the buyer is responsible for shipping costs and restocking fees. A restocking fee will be charged if you do not claim your item and it is returned. The charge will be 20% of the total charge per item.
  • For non-quality related warranty claims, POWERWIN refunds the cost of the product itself.
  • Returns may be rejected if items do not meet the above requirements.


Not Covered Under Warranty:

  • Products without sufficient proof of purchase
  • Lost or stolen products
  • Items that have expired their warranty period
  • Non-quality-related issues (after 30 days of delivery)
  • Gift products
  • Repairs through 3rd parties
  • Damage from outside sources
  • Damage from misuse of products (including, but not limited to: falls, extreme temperatures, water, operating devices improperly)
  • Purchases from unauthorized resellers



Damages and Issues:

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item so that we can evaluate the issue and make it right. If conditions are not met, POWERWIN reserves the right to refuse the exchange or refund.

Due to the complexity of international transportation, please confirm the product information carefully before ordering. If it is not a product quality problem, we do not accept unreasonable returns and refund requests.



Returns(if applicable):

  • To start a return, you can contact us at hello@powerwinpower.com. If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
  • To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.
  • You’ll also need the receipt or proof of purchase from the online store. (NB: Excluding 3rd party retail)
  • You will be responsible for paying for your own shipping costs for returning your item and the product restocking handling fee. A restocking fee will be charged if you do not claim your item and it is returned. The charge will be 20% of the total charge per item.


Refunds (if applicable):

  • We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post a refund too.


Exchanges (if applicable):

  • We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at hello@powerwinpower.com.


Additional Return Window Extension:

  • During certain times, from December 24, 2023, to January 1, 2024, you can extend the return window. The return window should not be later than Feb 1, 2024.
  • Q: What is the nominal voltage and capacity of the LiFePO4 battery?

    • A: The nominal voltage is 51.2V, and the capacity is 100Ah (Ampere-hours).

    Q: How do I charge the LiFePO4 battery?

    • A: Use a compatible LiFePO4 battery charger. Ensure that the charger's voltage and current settings are suitable for a 51.2V battery. Follow the manufacturer's charging guidelines.

    Q: Can I use a solar panel to charge the battery?

    • A: Yes, you can use a solar panel with a compatible charge controller. Make sure the charge controller is designed for LiFePO4 batteries and is configured to the correct voltage.

    Q: How do I connect devices to the battery?

    • A: Connect your devices or loads to the battery using appropriate cables and connectors. Ensure that the total load does not exceed the battery's rated capacity.

    Q: Is it safe to discharge the battery completely?

    • A: While LiFePO4 batteries can handle deeper discharges compared to some other battery types, it's generally recommended to avoid fully discharging them regularly for optimal lifespan. Consider recharging the battery before it reaches very low levels.

    Q: How do I monitor the battery's state of charge?

    • A: Use a battery monitor or a multimeter to check the voltage. You can also consider battery management systems (BMS) that provide more comprehensive information about the battery's status.

    Q: Can I connect multiple batteries in series or parallel?

    • A: Connecting batteries in series increases voltage, and parallel connections increase capacity. Ensure all batteries have the same voltage and capacity specifications. Use caution, and if unsure, consult the manufacturer or a professional.

    Q: What should I do if the battery gets hot during charging or discharging?

    • A: Stop charging or discharging immediately. Check for any malfunctions or incorrect connections. If the issue persists, contact the manufacturer for guidance.

    Q: How do I store the battery when not in use?

    • A: Store the battery in a cool, dry place with a partial charge (around 40-60%). If storing for an extended period, periodically check and recharge the battery to prevent over-discharge.

    Q: What safety precautions should I take?

    • A: Avoid exposing the battery to extreme temperatures, water, or physical damage. Follow the manufacturer's guidelines for safe handling, charging, and storage. If you have any concerns, seek professional advice.
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POWERWIN BT5120 51.2V 100Ah 5120Wh Battery 2 Pack 10240Wh