Economical general purpose 9V alkaline battery with a high energy output they are reliable with a long shelf life & good low temperature performance Duracell Plus Power now has longer life compared to previous Duracell Plus batteries This battery is ideal for everyday use such as smoke alarms remote controls etc For smoke alarms Pack of two 9v batteries Long lasting power Brand Name This is a Duracell branded product Quick search number MN1604B2 Number of Batteries 2 Chemistry of battery Alkaline Weight 90 g Dimensions 49 x 26 x 17 mm Battery Type 9 V Technology Duracell Plus This is a non-rechargeable battery