Alkaline battery Pkcell aa battery is made of zinc maganese. It delivers top performance and excellent durability for light to heavy drain devices. No lead added aa battery makes the battery-operated products more envirmentally friendly. Technical specification: 1. Pkcell model no.: super heavy duty aa battery r6p 2. Iec model no.: r6p 3. Ansi model no.: 15d 4. Capacity: 3.9·-0.9v test 105mins 5. Norminated voltage: 1.5v 6. Chemical structure: * cathod - manganese dioxide * anode - zinc can * electrolyte - zinc chloride in water 7. Height: 49.2~50.5mm 8. Diameter: 13.5~14.5mm 9. Shelf life: 2 years Packing information: 1. Blister packing: * packing detail: 4 pcs/pack, 24 packs/box, 960 pcs/carton * gross weight: 17.6 kgs/carton * volum: 0.0282 cbm/carton