A trickle charger is a car battery charger designed to be left on a car for a long period of time to re-charge the battery. It slowly adds the charge to the battery and does not allow for the normal depletion of charge that batteries commonly have. read more
The term “trickle charger” technically just refers to a battery charger that charges at a very low amperage, but the situation is a little more complicated than that. read more