The electrons travel to ground.
Alternator is defective, dead cell in the battery, or something is on pulling power from the battery.
Dead cell in the battery or something is on pulling power from the battery overnight.
Dead cell in the battery or something is on pulling power from the battery.
Dead cell in the battery or something is on drawing power from the battery.
Dead cell in the battery requiring it be replaced or something is on pulling power from the battery. Some light or relay.
Either the battery has a dead cell or something is on drawing power from the battery. Disconnect the negative cable and let it sit overnight. If the battery goes dead, replace it as it has a dead cell. If the battery stays charged then look for something pulling power from the battery. Dome, under-hood, trunk, curtorsey light, etc. Can also be a relay sticking.
A Compaq nc6000 will run on ac power when the battery is dead. The battery is long lasting but it can be charged by using ac power.
you make a phone go dead by taking out the battery
Depends on the battery.
Either something is draining the power - or the battery is at the end of its useful life.
They generally have more power and don't go dead when you need them.
if anything is running off the battery (visibly on) the battery will eventually go dead