The Sealey 12V-25A24V-12.5A Battery Support Unit Charger from ITS is a high frequency inverter type unit designed to both charge a battery and provide support for the battery during prolonged electronic diagnostic checks. Designed for use with vehicle batteries including Calcium, Wet, Gel, AGM and VRLA types on 12V and 24V systems, the support unit offers a charge cycle that has nine profiles designed to optimise the condition of the battery and the speed of the charge. Powered directly a standard UK plug, the unit has a 12V output of 25A and 24V output of 12.5A. For peace of mind, the temperature probe and sensor allows accurate charging of battery even when cold. For you safety, special circuitry prevents sparks or polarity reversal. Once fully charged, the battery may be left connected to be automatically conditioned and maintained. Battery Support Mode 20A 13.5V Battery Range 12V - 75-500Ah, 24V - 45-250Ah Power Supply Cable Length 1.8m Cable Clamp Length 1.7m