I don't know of any sources, but ... I bought three of those
suckers at various times and not a ONE of them outlasted the
regular 9V battery operated ones by more than a few MONTHS!!
Never found the receipt, so I was out all that extra money
invested in the battery (cost added to the detector for the
YMMV, but I'll never touch another one.
|I see there are battery powered smoke detectors with a ten year
| battery. However, I don't see any hard wired smoke detectors
with a ten
| year lithium battery for backup. I currently have those in my
| they are ten years old and I need to replace them (the whole
| detectors). Even on the website (Firex) I see only regular 9v
| battery models . If I have to, I'll buy those, but am
wondering if anyone
| knows of a source for what I'm looking for. The ones I have
are Firex model