OptiMate Lithium 0.8A 4S charger for LiFePO4 / LFP (lithium iron phosphate) batteries with 4 cells in series with a nominal voltage of 12.8V 13.2V.Special features: Saves low voltage LiFePO4 batteries Special LiFePO4 charge cycle Maintains and protects LiFePO4 batteries BMS battery recovery. Charging current: 8A Use: indoor / outdoor (minimum temperature: -4 ° F / -20 ° C). Saving: Start with low voltage of 0.5V + 3 stages of saving and low voltage testing. Ideal for: 12.8 / 13.2 V LiFePO4 (LFP) batteries with 4 cells in series of 2 30 Ah. Input: global (100-240V 50-60Hz), high efficiency (CEC listed), fully enclosed. Design: Wall mount weatherproof case, with 6ft / 180cm power cord and 6ft / 180cm charging cable with SAE plug. Weatherproof battery cable and standard battery terminal set. Safe: no risk of overload. Completely safe for vehicle electronics. Spark suppression. Safe for long-term battery maintenance. Automatic shutdown in case of short circuit or disconnected battery.