first make sure your battery is good a internal short in a battery cell will drain battery, disconnect battery and test it in morning if good make sure battery is clean if there is a grime film especially top terminals it will drain the battery by using the grime as a short to the pos and negative terminals, next make sure you alternator is charging when car is running is good charge if it still drains. you have a circuit or light staying on when ignition is off check trunk lap glove box lamp and hood lampstuck on we test current draws by disconnecting negative battery cable and hooking a volt meter to the battery cable and other end to battery if there is a draw it will red 12 volts make sure you close the doors as interior lights will cause draw. then we pull 1 fuse at a time to find which is the problem curcuit then go from thereci
Could be a faulty thermostat switch in the radiator !!
Had the same problem. Bought a re-conditioned alternator, turned out it was bad. Usually if battery draining, it's alternator or battery or both.
A slight possibility but not likely
Defective alternator, loose alternator drive belt, dead cell in battery, or something is on pulling power from the battery.
You may have an electrical short where there is a bare wire coming into contact with metal and draining your battery or you may simply have a light on that's making the battery's voltage to drop . An experienced mechanic will be able to conduct several diagnostic tests to determine the cause .
Then either something is on draining the battery or the battery has a dead cell draining all the rest and must be replaced.
Yes. Otherwise you will drain the battery through the ignition points, burning them out prematurely or even welding them together.
Dead cell in the battery, or something is on pulling power from the battery. Any light on the vehicle or any relay that is stuck. I am assuming you have checked the alternator and it is good.
A short will not drain the battery it will blow a fuse. It may be the battery has a dead cell, or some light is on draining the battery. It can also be a stuck relay.
Something is on draining your battery overnight. Any light or any relay. It can also be your battery has a dead cell draining it overnight.
If your battery is good and you know your car is draining it then yes, disconnecting your battery from your car will keep your battery charged for much longer than 3 days. Your battery should stay charged way longer than 3 days in normal conditions being hooked up to your car. You should get it checked out and figure out what is draining your battery so fast.
Can be a dead cell in the battery which means it must be replaced. Can also be something is on pulling power from the battery. Glove box, interior, under-hood, or trunk light. Can also be the alternator is defective.