The battery charging error, the first charge on the battery life and charging capacity has a great impact. If the battery is undercharged, the charge capacity of the battery is low and the service life is short. If the battery is overcharged, its electrical performance is good, but will also shorten its life. Therefore, new batteries should be carefully recharged at the initial stage. For General Battery, must be in accordance with the specifications of the first charge before use. For Dry charging Lead acid battery, according to the manual, the battery can be used without recharging if it needs to be used for 15 minutes after the specified density of electrolyte is added during the two year storage period. However, if the storage period is longer than two years, due to some oxidation plate has film, in order to increase its charging capacity, should be charged before use, use after charging 5 hours to 8 hours.The battery is not charged, and some drivers often neglect to charge the battery they are using. Because the battery is not fully charged in the car, it is easy to vulcanize the plate. At the same time, the amount of charge and discharge in use is unbalanced. If the discharge is greater than the charge, the battery will be in a state of power loss for a long time, the battery plate will be slowly vulcanized. This chronic curing will reduce the charge capacity of the battery until the starting power is reduced, greatly shortening the battery life. In order to reduce the active substance on the plate in time, reduce the vulcanization of the plate, increase the charge capacity of the battery, prolong the service life of the battery, the battery in use should be recharged regularly. The battery overcharges, even if the charging current is small, the battery often overcharges, but the electrolyte “Boils”for a long time, which not only makes the fine particles on the surface of the active material easy to fall off, but also leads to the excessive oxidation of the gate, causing the active material to detach from the grid. In addition to the active materials, barium sulfate, humic acid, carbon black and rosin are added to prevent the contraction and oxidation of the negative plate. In addition, the number of negative plates is always one more than the number of positive plates, and the negative plate is slightly thinner than the positive plate. If you do not pay attention to the polarity when the battery first charge or charge, it will lead to the battery charge and reverse, almost all the positive and negative electrode into a big particle PBSO4, lead to the battery charging capacity is insufficient, can not work properly, or even lead to battery scrap. Therefore, when charging must pay attention to the polarity, can not reverse polarity charge.