Procell PROCELL Battery – 12 Pack

For Smoke Alarm, Clock, Walkie-talkie, Gas Detector – 9V – 628 mAh – 9 V DC – 12 Pack
One advantage of alkaline battery is longer shelf life, while another is it saves power when not in use 9 V DC battery – Powers your smoke alarm safely. 628 mAh capacity ensures secure power flow to your smoke alarm