Cost-effective 12V and Lithium battery maintenance Charging Amps: 0.6A (constant current) Use: Indoor (lowest temperature: -4°F / -20°C). Save: Low Volt Start of 4V Ideal for: STD, AGM & GEL 12V batteries from 2 – 20Ah & Lithium (LiFePO4) 12.8/13.2V batteries Input: Global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed. Style: Dust proof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector. 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. Included: O1 weatherproof battery lead & O4 battery clamp lead included.