Ideal for Standard, AGM & gel 12V batteries from 2 รป 30Ah & Lithium (LiFePO4) 12.8/13.2V batteries Cost-effective 12V battery maintenance 0.6A (constant current) charging amps Indoor use (lowest temperature: -4?F / -20?C) 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. CHARGER OPTIMATE 1 DUO