OTC 3176 Smart Battery Charger and Maintainer Patented 5-stage automatic 5 amp charging system to quickly and efficiently charge a 12 volt battery while also extending its life Automatic power switch feature will give the technician complete confidence that they are not damaging the battery by automatically switching to float mode once the battery is completely charged Switching technology also helps to restore batteries that are slightly sulfated Easy to read LED lights to show the status of charging and battery condition Maintains the battery charge level if the vehicle or the battery needs to be stored for an extended period of time