The importance of consistency of VRLA batteries was summarized in this paper.The effects of consistency of batteries on service life were analyzed.The reasons and solutions about consistency of the batteries were discussed,and the effects of several key points during battery assembly process on consistency were also discussed.

This article generally introduces the characteristics,ranges for use and developing trends of commonly used lead alloys for lead-acid battery grids.In consideration of environment protection,if only the process control is reasonalbe,it is possible to make high performance products of Pb-Ca-high Sn complex alloys by which Pb-Cd alloys can be replaced.

This paper analyzes and verifies charge acceptance of VRLA batteries correlated with their discharge capacities and cycle lives,and partially tests and analyzes some aspects in the design and manufacture which have influence on the charge acceptance of batteries.

From the manufacturing and operating practices of electric bike batteries the author observed and analysed some factors resulting in PCL and short service life of the batteries,and presented some appropriate resolvents.