Charger Optimate 2 DUO MSEINPUT: Global (100-240V 50-60Hz), high efficiency (CEC listed).FEATURES: Adapts automatically to Pb or LFP battery. 24-7 safe long term maintenance.INCLUDED: weatherproof battery lead & battery clip set.STYLE: Weatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector.USE: Indoor / Outdoor (lowest temperature: -40°F / -40°C).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.