Size: AA/LR6 Kinds: Alkaline -Manganese dry battery Nominal voltage: 1.5V Jacket: Aluminum Foil. Brand: Micropower. OEM is welcome Packing: 4pcs in a shrink Dimension: 49.8± 0.5mm 14± 0.5mm Weight: 25g. Discharge time: 340minutes on the discharge condition of 3.9ohm, 24h/d, discharge to 0.9V. Capacity: 2100 mAh, (Discharge at: 10Ω , 1h/d, to 0.9V, at 20º C± 2º C) Shelf life: 3years. No mercury and cadmium added. Enviromental friendly. Super long lasting power. Excellent leakproof.