how far do you have to drive the car to charge a flat battery?

Answer 1

If your battery is dead, I'd have to say you aint goin nowhere

Answer 2

I reckon 10 miles at 60mph minimum if you just flattened it leaving lights on etc
Sometimes more sometimes less,
One trick if you jump start a car with crap jump leads, connect the batteries with the leads and run the good car at about 1500 revs for about 2 minutes before trying to start the car with the dead battery even 2 minutes will put a useful charge into a battey and reduce the load on the leads, Cranking can need 80 Amps and crap leads can barely cope with 20.
Second tip if you no charge warning lamp comes on get home as quick as posible, battery life with no charging is in minutes not miles, perhaps an hour without lights, thats 120 miles at 120 mph, 2 at 2 mph, and what ever you do dont use the starter, if you stall get someone to push.

Answer 3

you can leave it in the driveway and let it run. The alternator (Charger) isn't connected to the wheels, it's connected to the engine.

It should only take 10-20 minutes to give sufficient charge to start the car up again. If it doesn't, then you need a new battery. These days batteries last 3-5 years.

Have your car's electrical system checked at the same time to make sure it's not dicharging the battery because of a bad voltage regulator or a short.

Answer 4

if you simply ran down a good battery. You need to drive your car somewhere that you can keep your engine at a fairly high speed for about 15-20 minutes. If you have a faulty battery, or alternator, which is what charges your battery, you are just spinning your wheels. pun intended. you can go by any autozone, or equivalent store and they can hook a voltage tester for free in just a few minutes and tell you what the cause is.

Answer 5

2 question first. Why is the battery dead? has the car been left unused for ages, if so jump start it and drive for 20 minutes. If the battery has gone flat overnight, look at getting new battery, it will let you down sometime if you do not change it.

Answer 6

I was taught in mechanics class it takes 50 highway miles to fully charge back up the battery. Incidentially, a car can go 50 miles just on the battery, without headlights, if the voltage regulator is bad. So if you changed the battery and it still won't start in the morning, it's probably the regulator.

Answer 7

15 to 20 mins should do it but get your battery and charging system checked out. Make sure the battery warning light comes on when you switch on the ignition, if it doesn't then your alternator is faulty or the bulb has gone. If the bulb has blown then your alternator won't work anyway.

Answer 8

drive?
you just keep it on while the engine charges it
at least 10 minutes

Answer 9

drive minimum 30 minute if good battery.

Answer 10

15-20 minutes.