Optimate 6 Select Battery Charger/Power SupplyPerfect for starter and deep-cycle 12V batteries that demand accurate temperature-controlled charging and unsupervised safe long term maintenanceVoltage selection (14.4V / 14.7V) ensures the battery receives charge at the correct voltagePower supply mode delivers stable power for vehicle system reprogramming, showroom vehicle demo or retaining memorized settings when battery cables are disconnected to fit powered accessories or replace the batteryCharging amps: 5A (Ampmatic) @ 14.4V/14.7V; 4A @ 13.6VUse indoors or outdoors (lowest temperature: -40?F / -40?C)Low Volt Start of 0.5V and 2-step desulphation recoveryIdeal for STD, AGM, gel and Deep Cycle 12V batteries from 3 ? 240AhInput: global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealedWeatherproof case with wall mounts6 foot AC supply lead and 6 foot charge lead ending in SAE connectorWeatherproof battery lead and standard battery clip set includedNo risk of overcharging; totally safe for vehicle electronicsSparks suppressed, safe for long-term battery maintenance, automatic shut-down if short-circuited or battery disconnected9-step 12V 6A sealed battery saving charger & maintainer