Trickle Charging A Dead Car Battery. There are differing opinions of how long a trickle charger can be left on a battery. At 20 amps it can charge a vehicle battery in about 2 hours.

Trickle chargers are used to keep your battery charged over time so you are never left stranded with a dead battery. Ad Stop By Your Local Ford Dealer and Theyll Get You Back On The Road Quickly. A 2 amp model would require 30 hours of charging time.
You can start the battery again with a little trick called trickle charging.
Park the car in a safe place. You have a good but stone dead battery. You can start the battery again with a little trick called trickle charging. Maximize Your Batterys Performance With Our Chargers.

