Special for rv, it can directly replace lead-acid battery to supply power for the whole vehicle. 12.8v lithium iron phosphate battery is more suitable for long-distance travelling, completely waterproof, safer, and long life. Simple installation, support car charging, car engine can be directly connected to the battery charging; Support high-power electrical appliances, easy load induction cooker, rice cooker, air conditioning, refrigerator and other rv electrical appliances; Support a variety of charging methods, so that you can rest assured at any time electricity. Charging voltage: 14.6v; Limiting voltage: 14.8v; Start the peak current; Size: 520 * 230 * 220 mm.