easysurfer
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
- Joined
- Jun 11, 2008
- Messages
- 13,155
Chirp, chirp, chirp ... the battery is going low on my smoke detector/carbon monoxide and smoke detector that are hard wired, yet require batteries as backup.
I have on in the hallway, and one in the adjacent bedroom. Same brand detectors.
So I open the battery holder on one, see that it takes two AA batteries. I run to the store and buy 4 batteries, figuring, might as replace for both detectors.
But to my surprise, when opening the holder for the other detector, it takes a 9V smoke detector battery .
What the heck? Why couldn't they just use the same size batteries?
I have on in the hallway, and one in the adjacent bedroom. Same brand detectors.
So I open the battery holder on one, see that it takes two AA batteries. I run to the store and buy 4 batteries, figuring, might as replace for both detectors.
But to my surprise, when opening the holder for the other detector, it takes a 9V smoke detector battery .
What the heck? Why couldn't they just use the same size batteries?