2 Pack 12V 100Ah LiFePO4 Batteries, Ultra-Light 21.9lb Each, 15000+ Cycles, 4S4P Expandable, Built-in 100A BMS, Group 24 Lithium Batteries for RV, Marine, Off-Grid, Trolling Motor, Solar, DIY Power

• 【2× POWER, 15,000 CYCLES – LASTS 10X LONGER】 Double your capacity with two Grade A+ LiFePO4 batteries. Each 12.8V 100Ah unit offers up to 15,000 cycles @60% DOD — 10X longer lifespan than lead-acid. That’s over 10 years of reliable, maintenance-free energy for RVs, boats, solar homes, and more.
• 【DUAL 100A SMART BMS & FULL SAFETY PROTECTION】 Each battery includes a 100A BMS that protects against overcharge, over-discharge, overcurrent, overvoltage, and short circuit. Plus, with dustproof, moisture-proof, and salt-spray resistance, they’re built to perform in tough and wet conditions.
• 【FLEXIBLE 4S4P EXPANSION – BUILD UP TO 20.48kWh】 Start with two, expand up to 4 in series and 4 in parallel for 51.2V 400Ah (20.48kWh). Great for growing power needs—whether it’s for off-grid living, backup systems, or energy-hungry devices.
• 【LIGHTWEIGHT & GROUP 24 SIZE – EASY DROP-IN】 Each battery weighs just 21.9 lb—50% lighter than lead-acid—and fits BCI Group 24 battery boxes. Easy to install in RVs, campers, boats, and any space-limited setup.
• 【MULTI-PURPOSE ENERGY – RUNS EVERYTHING YOU NEED】 Use the pair across solar setups, trolling motors, marine systems, RVs, travel trailers, emergency backup, and DIY power builds. Power a CPAP up to 84h, a fridge for 34h, or light up your off-grid cabin with confidence.
• 【Certified Safety, Smart Use Tips & 5-Year Peace of Mind】 Certified by UN38.3, IEC, CE, UL, and RoHS for top-level safety and reliability. Important reminders: · Not for engine starting or high-current surge applications · Do not submerge the battery in water · Avoid overloading beyond rated capacity Now upgraded with a 5-year warranty and 10-year repair service — feel free to contact us directly via Amazon if you have any issues.
• 【First Use & Charging Notice】 1.To protect battery health, some units may ship in 0V protection mode. Use a 14.6V LiFePO₄ activation charger to wake it up before charging (e.g., 14.6V 8A charger with 0V function). 2.Avoid using 12V chargers, standard lead-acid chargers, or automotive chargers. Chargers with repair, pulse, or desulfation modes designed for lead-acid batteries may interfere with the LiFePO₄ BMS and trigger early protection shutdown.
• 3.Before connecting batteries in series, ensure each battery is fully charged and the voltage difference does not exceed 0.2V (fully charged ≥14V). 4.To maintain battery health, charge at least once every 2–3 months if not in use. 5.When connecting multiple batteries, use the same model and age; for best balance, fully charge each battery individually before series connection. ✅ Using a LiFePO₄-compatible charger helps extend battery life and ensures reliable, safe performance.

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