... life 4 Mercury & cadmium free 5 OEM welcome NoItemSpecification1ModelAlkaline Batteries LR20-D2SizeD3Capacity15000mAh4Dimension34.2*61.5MM5Weight135G6JacketAliminium Foil7Discharge time340-380mins8Shelf life5 years9CertificationCE.RoHSAdvantage ... ,,data bank,calculators,audio appliances,remote controls,paging machines etc LR20 D Alkaline batteries