Main Application: 1.backup power supply for electric power system and nuclear power plant,energy storage of solar and wind power generation. 2.backup power supply for communication and signal systems such as telecommunication China mobile, railway etc. 3.backup power supply for vessel and maritime affairs. 4.backup power supply for UPS,medical equipment and emergency illumination etc. If you have any requirement,welcome to contact us! main technical parameters: 1.battery has a long service life,it can operate under float charging for 12~14years(25 degree),and the cycle service life is long. 2.the self-discharge rate of battery is very low.when the battery is put outside for two years at 20 degree,the self-discharged capacity is lower than 40% of the rated capacity. 3.the battery has strong ability to recover from deep discharging.within 12 hours after deep discharging,the battery can be charged to 95％ of the rated capacity. 4.the gas recombination efficiency exceeds 99%