DURNERGY 9 Volt Battery, 9V Batteries 24 Pack, Smoke Detector Battery 9V 6LR61 Battery Square Batteries 9V Alkaline Batteries

“Specifications of 9volt Batteries for Smoke Alarms Size: 1.04*0.68*1.90 inch Voltage: 9V Chemical Systems: Alkaline Manganes Appearance: Button Top NOTE:1.Always select correct size and grade of 9 batteries volt most suitable fot intended use. 2.Ensure that batteries are installed correctly with regard polarity(+ and -). 3.v9 Batteries shall be stored in well-ventilateddry and cool conditions. 4.Do not mix unpacked 9-volt batteries so as to avoid mechanical damage and/or short circuit among each other.”