HRBEENERGY Designed for harsh environments such as rainy or coastal areas, or dusty and wet conditions. The 12V 300Ah LiFePO4 lithium Battery offers long-lasting performance with a reduced risk of damage and an extended lifespan. it provides 15000+ deep cycles, 200A BMS,will be your best choices for outdoor camping power.It supports for RVs, camping, boats, off-grid apps and so on. our LiFePO4 battery is protected from overcharging, over-discharging, over-current, and short-circuiting, as well as high-temperature cutoff, ensuring maximum safety and reliability. We focus on building batteries that last a long,long time,providing lasting value for our customers, and reducing e-waste and the impact on our planet. Note: Please recharge it every 3 month if not use,do not use it as a car battery. Charging Method: about 15 hours to charge if use a 20A battery charger(charger not included), about 600w solar panel, and 15 hours to charge with 20A DC generator.