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Why does a battery drain when the car is not running?
Slaughterleonard09
Either the battery has a dead cell and needs replacing or something is on pulling power from the battery.
Wiki User
∙ 13y ago
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Could alternator drain battery when car is not running?
If the alternator is installed incorrectly, yes, it can drain the battery.
Can a cigarette lighter drain the car battery if the car is on?
If the car is on (Ignition is on, engine is running) then no. Nothing should drain the battery when the car is running, there is a device called an alternator with a belt that usually goes around the crankshaft that transforms the mechanical energy into electrical energy. As long as you have the car running, the battery should not die. If so, you have a mechanical problem.
Could a dead or dying airbag backup battery drain a main battery when the car is not running?
It might
Does leaving the car on but not driving it anywhere drain the battery?
If the engine is running, then no. The alternator constantly keeps the battery charged.
Will jump starting a dead truck battery drain a car battery?
If the donor vehicle is running and has a properly functioning alternator, no.
Will the Legacy Car Audio LBP22 Subwoofer drain he battery?
The Legacy subwoofer will really drain your battery. It's not a good idea to run it while you're not running the engine.
What can make a battery drain when car is not running?
mainly leaving your lights on when the engine is of or leaving the keys in the ignition
Do running headlights drain the car battery?
No. The power to illuminate the Daytime Running Lights (DRL's) is supplied by the alternator, and does not have to be supplied by the battery. Once a vehicle is started and the engine is running you could remove the battery from the car entirely and everything requiring current would still operate.
What should you do if your car factory car stereo is draining your car battery?
While the car is running the alternator should be recharging the battery faster than stereo can drain it. I suspect you either have a problem with the alternator or its time to get your battery replaced. Until you get it fixed, if you don't turn on the radio, it wont drain your battery :) If it is a high power model, it needs to be wired directly to the battery.
Can wrong spark plug wire cause a car to die or drain battery?
The wrong spark plug wire(s) can cause engine problems including not running but won't drain the battery.
Does the battery charger drain the car battery before it recharge it or does the charger builds-up the car battery from where it is initially.?
A battery charger does one thing. It charges a battery, and starts with whatever charge is in the battery and goes from there. Running an automobile battery down will shorten it's life.
What causes the battery on a 1999 Grand Am to drain to nothing?
something else must be running when the car is off besides the clock.
