Details The OptiMate Lithium 0.8A 4S charges LiFePO4 / LFP (Lithium Iron Phosphate) 4-series batteries with nominal voltage of 12.8V – 13.2V. Saves low voltage LiFePO4 batteries Specialized LiFePO4 charge cycle Maintains & protects LiFePO4 batteries Battery BMS reset. CHARGING AMPS : 8A USE: Indoor / Outdoor (lowest temperature: -4°F / -20°C). SAVE: Low Volt Start of 0.5V + 3 step low volt save & test. IDEAL FOR: LiFePO4 (LFP) 4 series cell 12.8 / 13.2V batteries from 2 – 30Ah. INPUT: Global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed. STYLE: Weatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector. Weatherproof battery lead & standard battery clip set SAFE: No risk of overcharging. Totally safe for vehicle electronics. Sparks suppressed. Safe for long-term battery maintenance. Automatic shut-down if short-circuited or battery disconnected. 3-year limited replacement warranty. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov