Compared with the traditional one, the maintenance-free battery has many good properties such as free of adding distilled water* no corrosion of the terminal, less amount of self-discharge and additional installation of an electric eye for the densimeter.

• 免维护蓄电池与传统蓄电池相比具有使用中不需添加蒸馏水、接线柱免腐蚀、自放电量少、增设液体密度计电眼等优点。