What is the best way to keep a battery charged on a car that's not going anywhere?
September 6, 2010 4:31 AM Subscribe
How often, and for how long, should I turn over my car's engine in order to preserve the battery?
posted by Biru to travel & transportation (21 answers total)
I have a 1999 Ford Cougar
which will be effectively off the road for up to three or four months this winter. A friend is able to keep an eye on the car, and turn the engine over periodically to maintain the battery charge. However, conscious of the fact that starting the engine itself requires power, I would like to know how long I should have her turn the engine over for, so as to charge the battery more than is taken from it in starting the car. Also, is once a week suitably frequent? The car will be kept outdoors during the UK winter.