No-pollution R40 dry cell battery powered heater Zinc Manganese Dry Battery R40 Competitive price Equivalents:6, 6 IGNS, 6 IGN. S, ... 6, Number 6, R40. Description:Zn/Mn battery, R40battery, No.6 battery, high-power battery, environmental battery, Hg ,lead and Cd free, high ... (+/-). 2, Do not attempt to decomposition, recharge, heating the battery. 3, Do not mix old and new batter, different types ...