The Haisic 4kWh 12V (12.8V) LiFePO4 battery is a deep-cycle lithium iron phosphate battery with a nominal capacity of 314Ah to 320Ah, designed for solar energy storage. It features an intelligent BMS, a 5-year warranty, and supports up to 6,000–10,000 cycles. This model, often found on EnergyMall and SolarVillage, offers robust performance for 12V hybrid inverter systems.