2 pack 12.8V 100Ah Mini LiFePO4 Battery - Lightweight 1280Wh

In this review the 2 pack 12.8V 100Ah Mini LiFePO4 battery is judged as a strong option for users who need durable, portable energy storage. The bottom line: this pair is best for RV, solar, marine and home backup projects that value long life and light weight, because the built-in 100A BMS and LiFePO4 chemistry deliver reliable protection and thousands of cycles in a compact 1280Wh package. For anyone needing a heavy-duty starting battery replacement this is not intended for that use; the unit is engineered for energy storage, not engine starting.

Key Features

• Lightweight design: At about 19-20 lbs each, the battery provides the same 1280Wh capacity as much heavier lead-acid units while making installation and transport far easier.
• Long lifespan: Premium LiFePO4 cells offer an extended service life with up to 4000 cycles at 100% DOD and far more at reduced depth of discharge, reducing long-term replacement costs.
• Integrated protection: The built-in 100A BMS protects against overcharge, over-discharge, overcurrent, short circuit and extreme temperatures for dependable field use.
• Expandable system: Support for parallel and series connections up to 4S4P lets users scale capacity to large off-grid or marine installations without replacing existing modules.
• Rugged and weather resistant: An IP65-rated casing and robust construction make the pack suitable for outdoor, marine and RV environments.

Who It's For

This 2 pack is ideal for campers, vanlifers and small off-grid systems that need portable, high-energy storage without the weight penalty of lead-acid batteries. It suits hobbyist solar setups, inverter backup in a small home, and marine trolling motor power where repeated cycles and long service life matter.

People who need a dedicated cranking or starter battery, golf cart traction batteries, or products meant for very high instantaneous start currents should look elsewhere, since this product is specified for energy storage and not recommended for starting engines or running jacks.

Pros & Cons

Pros

• Excellent energy-to-weight ratio makes it practical to move and fit in tight spaces.
• Long cycle life from LiFePO4 chemistry gives lower total cost of ownership over years of use.
• Robust BMS and IP65 casing provide safety and reliability in outdoor conditions.

Cons

• Not suitable as a starting battery or for applications the manufacturer specifically warns against.
• Voltage and current measurements may vary by 1% to 5% depending on measurement conditions, so expect small deviations from nominal readings.

Specifications

Our Verdict

The 2 pack 12.8V 100Ah Mini LiFePO4 battery is a solid value for users who need a compact, lightweight energy storage solution with a long service life and strong built-in protection. Its scalability, IP65 durability and high cycle life make it an economical choice for RV, marine and small home solar systems, provided it is used for energy storage rather than engine starting.

Frequently Asked Questions

Can these batteries be connected together for more capacity?
Yes, the packs support parallel and series connections up to 4S4P so you can expand capacity and voltage as needed.

How often should the battery be charged if not in use?
Charge or discharge the battery once every 6 months to prevent damage from long-term disuse.

Is this battery waterproof for outdoor use?
The unit has an IP65 casing which protects against dust and low-pressure water jets, making it suitable for many outdoor and marine applications.