Environmental R40 dry cell High capacity, high magnification Widely used in railway, communication Competitive Price Equivalents:6, 6 IGNS, 6 IGN. S, 6 ... :Zn/Mn battery, R40battery, No.6 battery, high-power battery, environmental battery, Hg ,lead and Cd free, high capacity, high magnification ... appliances if unused for extended periods of time.Company introduction Environmental R40 dry cell