... x 4pcs, totally 280 WVmp/Imp18V,11.1AVoc/Isc22.2V,12.2ALiFePO4 BATTERY (Maintenance free, deep cycle, also called LFP battery ... charging & floating charging 5) Automatic load recovery6) Automatic voltage recognition ( 12/24V, 24/48V)7) temperature compensation 8) Exact clock display9 ...