Promotational & high quality R40 dry battery High capacity emergency battery High magnification and environmental Equivalents:6, 6 ... battery, high-power battery, environmental battery, Hg ,lead and Cd free, high capacity, high magnification Chemical system Zn/Mn(Zinc/Carbon)Nominal voltage 1 ... Do not attempt to decomposition, recharge, heating the battery. 3, Do not mix old and new batter, different ...