Cole Hersee Company's Smart Battery Isolator 48525 and 48530 are ideal for electrical applications. The devices prevents loads on the auxiliary battery from draining the starting battery. They provide a more flexible solution than traditional isolators, as these isolators are not specific to an alternator type. Because the Smart Battery Isolator reduces charging system workload by not connecting to the auxiliary battery until the primary battery is charged to 13.2 v, there is lower strain on expensive charging components, helping to extend product life.