Abstract: The recently research for secondary utilization of VRLA Battery mainly refer to  scrapped batteries disassembling, classifying, plate melting and plastic recycling technology to produce the raw materials In this paper, we discussed the feasibility of applying secondary utilization of VRLA Battery in the power system, which have been repaired with scientific method, to several scenes such as family storage etc. This paper first analyzes the causes of premature battery failure is lack of water and sulfation, and then briefly introduces the newest industry standards recommend repair technique, which can effectively solve the problem of water shortage and sulfation, and then recover the battery capacity and reduce the internal resistance, also analysis the feasibility of the application of VRLA battery after repaired in energy storage; Finally, We also discussed the application schemes of applying recovered valve regulated lead-acid batteries in the field of domestic photovoltaic energy storage, household energy storage and energy storage power station. And the future of secondary utilization of VRLA Battery using in these areas is prospected as well.

Key words: VRLA battery, battery regeneration and restoration, secondary utilization, stored energy, cost reduction