The CTEK MXS25 is a Heavy Duty, 8 stage smart charger and conditioner ideal for batteries of almost any size. This heavy weight can charge batteries upto 500Ah in size using its unique 8 stage process. This process helps to maintain the batteries power, and even revive weak or damaged batteries. The built in temperature sensor allows the charger to alter the power flow depending on the situation making this one of the most inteligent chargers available in the UK