ACR Charger XLT Overnight Trickle Charger with MaxCap Battery

A trickle charger is a car battery charger designed to be left on a car for a long period of time to recharge the battery. It slowly adds charge to the battery and does not allow for the normal depletion of charge that batteries commonly have. There are differing opinions on how long a trickle charger can be left on a battery and for that reason, different types have been manufactured.