This paper discussed the valve to control the lead-acid battery failure causes of the station for backup batteries safeguard the weak links in the light of the communication station battery operation and mainte- nance characteristics.Through the perspective of preventive maintenance and the proposed targeted maintenance

the battery maintenance plan is carried out to to improve the stability and reliability of the reserve batteries. The extended battery servise life is easy.To build the intensive enterprises and promote the environmental protection concepts

therefore the social benefits of environmental protection will be obtained.