Tecmate Optimate DC to DC, TM-500, 12V Battery/DC Supply to 12V (Lead Acid) or 12.8-13.2V (LFP-Lithium) Battery Charger CHARGE YOUR 12V (Lead Acid) or 12.8V- 13.2V (LFP-Lithium) BATTERY FROM ANOTHER 12V BATTERY! NO AC POWER REQUIRED. Ideal for both lead-acid and LFP (LiFePO4) batteries. Recharge your trailered motorcycle, ATV or speed boats battery on the way to the venue SAVE : Low Volt Start of 2V; CHARGING AMPS : 2A Model TM-500 IDEAL FOR : STD, AGM & GEL 12V batteries and LFP 12.8V-13.2V batteries from 3  96Ah 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 & fused battery clip set included INPUT : 12-16 V, 2.7A max