How Long Should I Charge My Car Battery. How to charge your battery. Generally if you can keep your engine RPM up your alternator will charge your battery at a faster rate.
Then hook it up to a battery maintainer. My Buick can sit a long time without draining but my Taurus will drain the battery flat in 2-3 weeks. Should your car need charging make sure this is done through a designated home charge point or public station.
Batteries dont work well when theyre left discharged or at a low charge for long periods of time.
Charging a car battery 4 things to remember. Its always better to use a battery charger to bring your battery up to at least 125 volts. Use a 30 amp charger at your own risk. How long it will take for your car to charge the battery depends a lot on the car engine and the size of the car battery.
