Battery Charger, PeleusTech 12V 14.4V 1A Portable Lead Acid Battery Smart Charger Maintainer - Black Accurate Positive Voltage Detection Function: It will not charge when the battery is full. LED indicator lights show charging status: The first is green when you turn on the power; The second is red when the product during charging; The third is green when the product finished charging. Charge, maintain and restore your car, bike, atv, boat, scooter, suv, or truck's 12V battery Smart charger maintainer for AGM, GEL, SLA, FLA 12 Volt for Car and other 12V battery Notice: This is Floating Charger which is more safe. Maximum allowable voltage to 14.8 volts. Be care of the Clip positive and negative electrode(Red is positive and Black is negative )