Why is the battery fault light on?

There are five reasons why the battery fault light is on. The first is that the generator belt is loose, the second is that the generator is not well charged, the third is that the battery pile is loose, the fourth is caused by a line fault, and the fifth is that the battery is faulty. .

If after the battery test, it is found that everything is normal, but the battery does not work, there may be the following six reasons. The first is that the vehicle accessories have been left open all night, and the battery has run out. The second is that the driving speed is too busy and the car stops frequently. It often stops and goes and uses a lot of electrical equipment, such as air conditioners, wipers, and car phones. The third is that the electrical load exceeds the output power of the generator, which most often occurs on vehicles with subsequent equipment installed. The fourth is the failure of the charging system, such as slippage of the drive belt and damage to the generator. The fifth is that the battery is not properly maintained, resulting in the loosening of the battery pressing device or the loss of the battery insulator. The sixth is that there is a mechanical failure in the electrical system, such as a short circuit or a jammed wire, which causes the battery to lose power.