... 2.High capacity grids and Qualified lead-calcium alloy3.low self-discharge rate4.long cycle life5.high mechanical intensity,good ... ,our product are made by good material ,they have long cycle life with deep discharge ,low discharge rate. I' ... more information ,please contact us ,and welcome you!! Sealed Lead Acid Battery Plate ,battery plate,motorcycle battery plate1) Grid: Pb-Ca, Pb-Sb-Cd Alloy ...