Tecmate Optimate Lithium 4s 0.8A, TM-471, 8-Step 12.8/13.2V 0.8A Battery Saving Charger-Tester-maintainer Unique LiFePO4 battery protection! The OptiMate Lithium 0.8A 4S charges LiFePO4 / LFP (Lithium Iron Phosphate) 4-series batteries with nominal voltage of 12.8V  13.2V! SAVE: Low Volt Start of 0.5V + 3 step low volt save & test.; CHARGING AMPS: 800mA. Model TM-471 IDEAL FOR: LiFePO4 (LFP) 4 series cell 12.8 / 13.2V batteries from 2  30Ah. USE : Indoor / Outdoor (lowest temperature: -4F / -20C).; 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 INPUT: Global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed. Saves low voltage LiFePO4 batteries Specialized LiFePO4 charge cycle Maintains &amp; protects LiFePO4 batteries <span class="a-text-bold">CHARGING AMPS : </span>0,8A <span class="a-text-bold">USE : </span>Indoor / Outdoor (lowest temperature: -4F / -20C). <span class="a-text-bold">SAVE : </span>Low Volt Start of 0.5V + 3 step low volt save &amp; test. <span class="a-text-bold">IDEAL FOR :</span>LiFePO4 (LFP) 4 series cell 12.8 / 13.2V batteries from 2  30Ah. <span class="a-text-bold">INPUT : </span>Global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed. <span class="a-text-bold">STYLE : </span>Weatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector. <span class="a-text-bold">INCLUDED</span>: Weatherproof battery lead &amp; standard battery clip set <span class="a-text-bold">SAFE</span>: 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.