Battery long-term retention, charging process of long-term over charge and under charge, the use of the process of large current discharge, very easy to cause the battery. Its appearance is: put on the light, a charge on the full, we call it a battery of false damage". Sulfate is adhered to the plate, which reduces the reaction area between the electrolyte and the electrode plate, so that the capacity of the battery is rapidly reduced. Loss of water will increase the battery's vulcanization; vulcanized and will increase the loss of water, easy to form a vicious cycle.