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Analysis of capacity decrease on the early stage of the cycle life

CHAI Shu-song(Fujian Anxi Minhua Battery Co.,Ltd.,Quanzhou Fujian 362442,China)  
The cycle life was tested by using the limiting current constant voltage charging and 100 % DOD discharging method.The results showed that the discharging capacity gradually decreased on the early stages of the cycle life,and then increased slowly.It was analyzed that the phenomenon was related with the charge system and the characteristics of valve-regulated lead-acid batteries,rather than from battery defects.And the causes of this phenomenon were analyzed and discussed.
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