TECMATE Optimate 1 Duo Battery Charger/Maintainer TM409

Ideal for Standard, AGM gel 12V batteries from 2 30Ah Lithium (LiFePO4) 12.8/13.2V batteries, Cost-effective 12V battery maintenance, 0.6A (constant current) charging amps, Indoor use (lowest temperature: -4F / -20C), Low Volt Start of 4V, Global input (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed, Dust proof plug-in case, with 12ft / 370cm charge lead ending in SAE connector, 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, Weatherproof battery lead battery clip set included