The Auto Choice 12v/24v Smart Battery Charger is suitable for use with most modern day car & truck batteries (excluding lithium ion) With a 30% faster charge than a 6a or 8a charger, providing up to 20a of charge. Suitable for charging and repairing both 12v (20a) and 24v (10a) batteries. A low minimum start voltage of only 5v allows the charger to work on heavily depleted batteries. Featuring a 7 stage charging cycle, consisting of desulphation, soft start, bulk mode, absorption, battery test, recondition and float. The large display screen provides a wealth of information on the status of the charge, voltage, current, temperature, battery charge level, summer mode as well as winter mode. The portable design, with folding handle and built in cable tidy.