... 6, Number 6, R40. Description:Zn/Mn battery, R40battery, No.6 battery, high-power battery, environmental battery, Hg ,lead and Cd free, high ... maintenance environment3, Because of easy to use, long storage period and safe, R40 battery is the emergency power supply4, high quality and ... not ideal)6, R40 is the best price performance in dry cell, It can be single use only, also can form batteryApplicable ...