... 6, R40. Description:Zn/Mn battery, R40battery, No.6 battery, high-power battery, environmental battery, Hg ,lead and Cd free, high capacity, high magnification Chemical ... ideal)6, R40 is the best price performance in dry cell, It can be single use only, also can form ... (+/-). 2, Do not attempt to decomposition, recharge, heating the battery. 3, Do not mix old and new batter, different types ...