either you have corrosion on the connector cables (wires that hook the battery up to the car) or you have a bad fuse or you have a bad alternator (what charges the battery and keeps the car running). in order to find out try to jump start it. if the engine doesnt turn than the cables are bad.
A new battery or one that tested good is in the vehicle and the car is still losing power. the alternator is what charges the battery while the vehicle is operating.
An Engine and a battery
Then something is on pulling power from the battery. Any light on the vehicle or any relay that is stuck closed.
If you are 100% sure the battery and alternator are good and the battery is loosing it's charge then something is on pulling power from the battery. Can be any light or any relay on the vehicle.
The vehicle would run on battery power until the battery runs out of power.
battery
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.
The alternator or generator depending on the vehicle.
If you are going to store your vehicle for a long period of time it is a good idea to remove the battery to avoid battery drain.
The battery.
no your alternator and your cars battery is
If you can get your vehicle started you can then un hook the battery while it is running and if your vehicle stays running then your alternator is good. If it stalls and dies as soon as you unhook the battery then the alternator is not good.If you can get your vehicle started you can then un hook the battery while it is running and if your vehicle stays running then your alternator is good. If it stalls and dies as soon as you unhook the battery then the alternator is not good.