over time the battery loses capatinace, or ability to hold charge... or u have aparasitic draw. something like a fan or light that runs wen the engine dosent
when you spin out, or burn your tires, yo!
Molecular degradation of the structure and substances inside the battery.
Something causes a slow drain on your battery. As it does, your battery slowly discharges. If you know that your car will be not used for several months, you might try disconnecting on of the battery terminals.
Something is usually on that you don't know about like an alarm could be draining the battery. However, If its not starting you should check the starter though. It will make you think the battery is bone dead.
It has to be a dead charging system.... usually a short internal in the alternator
what causes the battery light to on a 2005 ford expedition to come on?
A few causes that will make the Battery Light come on are: 1. Faulty Battery 2. Loose Battery Connection 3. Battery is not Charging, ie. Faulty Alternator
Sulfuric acid fumes escaping from the battery.
The battery for the battery backup is weak maybe
Usually a battery will leak because of overvoltage, overtemperature or a bad battery cell.
a flat battery
Your battery is weak, or your your alternator is not charging battery.