Automotive battery can be divided into maintenance free battery and Dry charged battery. Sealed Maintenance free battery is the battery already added and sealed before leaving factory, and the user needn’t add additional fluid at all. It can reduce environmental pollution. Adopted the newly designed fully sealed structure and modern production process, Sealed maintenance free battery have high performance, long life, maintenance-free, safe and reliable advantages. It is convenient and safe for the used to use. Our batteries also has the characteristics of vibration resistant performance, high temperature resistance,low self-discharge and high CCA performance . The service life is generally twice that of ordinary batteries.