It is important to understand that batteries do not store energy directly in them. They usually store electrical energy in the form of chemical energy. The positive AC source signal is connected to the positive battery port and the negative AC source signal is connected to the wrong battery circuit. It is currently beginning to flow. However, the AC changes its magnitude and there is no power supply itself. This is because a straight half cycle cancels a bad half cycle. If left unchecked, this operation could damage the battery. Therefore, AC is not stored in batteries.