... of efficiency or any applicable deterioration of battery preformance.Valve regulated lead-acid battery are widely used in the field of ... , Ni-Fe, Valve -regulated Lead-acid battery, Li-ion battery, chargers and production machines for battery, totally 500 varieties.Occupation 262,000 ... 373- 5282882Mobile: 86-13409241162Product picture Packing pictureCompany picture Lead-acid battery for Electric system