... .6, Number 6, R40. Description:Zn/Mn battery, R40battery, No.6 battery, high-power battery, environmental battery, Hg ,lead and Cd free, high capacity ... correctly (+/-). 2, Do not attempt to decomposition, recharge, heating the battery. 3, Do not mix old and new batter, different types ... appliances if unused for extended periods of time.Company introduction Military Cableless communcation battery