It takes 2 × CR2: a camera & alarm battery, short and chunky, about 2.7 cm long.
Something wrong or missing? Tell us
You’ll need: None
Slide or unscrew the little battery door.
Take out the old one and put the new one in matching the “+” mark.
Close the door and switch it on.
As an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.
Buttons open amazon.com 🇺🇸, picked from your country.
A new battery usually lasts about a year in this device.
That’s around November 2027.
We only use your email for this reminder. Privacy policy
It takes 2 × CR2, a camera & alarm battery.
Yes. CR15H270, DLCR2, EL1CR2 are the same battery with other names.
Usually about a year, depending on how much you use it. Most devices warn you when it gets low.