[10-year Lifespan]12.8V 300Ah LiFePO4 battery utilizes automotive-grade cells, delivering 3840Wh of massive energy capacity. Offering 4000 cycles at 100% DOD, 6000 cycles at 80% DOD, and up to 15000 cycles at 60% DOD. Weighs just 57 lbs, and boasts a lifespan 10 times longer than lead-acid batteries, they reduce the cost of frequent replacements. [Smart BMS & Multiple Protection]12V 300Ah LiFePO4 battery built-in 150A Battery Management System (BMS), our battery delivers stable and safe power. It is rigorously protected against over-charge, over-discharge, over-current, short-circuit, and high temperatures. High-temperature cutoff prevents charging above 158°F (70°C), making it safer than lead-acid alternatives. It can adapt to a wider range of temperature environments, making it an outdoor advantage as an RV battery. [Flexible Expansion & Wide Compatibility]12V 300Ah LiFePO4 batteries can be connected in parallel or series to achieve greater capacity. Supports 4S4P configuration, enab