The world’s most advanced battery charger for starter & deep cycle batteries! OptiMate 6 Select is perfect for starter and deep cycle 12V batteries that demand accurate temperature controlled charging and unsupervised safe long term maintenance. Voltage selection (14.4V / 14.7V) ensure the battery receives charge at the correct voltage. Special feature: POWER SUPPLY mode delivers stable power for vehicle system reprogramming, show room vehicle demo or retaining memorised settings when battery cables are disconnected to fit powered accessories or replace the battery. CHARGING AMPS : 5A (Ampmatic) @ 14.4V / 14.7V / 4A@ 13.6V USE : Indoor / Outdoor (lowest temperature: -40°F / -40°C). SAVE : Low Volt Start of 0.5V + 2-step desulphation recovery. IDEAL FOR : STD, AGM, GEL & Deep Cycle 12V batteries from 3 – 240Ah. INPUT : Global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed. STYLE : Weatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector. Weatherproof battery lead & standard battery clip set included. 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.