The AGM battery uses pure sulfuric acid aqueous solution as the electrolyte, and its density is 1.291.3lg/cm3. Most of them exist in the glass fiber membrane, and at the same time, there is a part of electrolyte inside the electrode plate. In order to supply the oxygen released from the positive electrode to the channel of the negative electrode, it is necessary to keep 10% of the pores of the diaphragm not occupied by the electrolyte, that is, the lean solution design. The pole group is tightly assembled so that t