Re: Rechargeable Smoke Alarm Batteries?

[Marc F Hult <MFHult@xxxxxxxxxxxxxxxxxxxxx>]

On Sat, 17 Sep 2005 17:23:33 GMT, "Frank Olson" <feolson@xxxxxxxxxx> wrote in
message  <piYWe.507496$s54.221661@pd7tw2no>:

>
>"DavidB" <#DavidB6061#@sbcglobal.net> wrote in message
>news:432c4529.438702842@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> My Smoke & CO2 Detectors are not connected to an alarm system and I am
>> tired of changing batteries. Since the alarms have A/C, couldn't the
>> A/C be continually charging a backup battery in the detector? I have
>> looked without success - where do I find Smoke/CO2 Detectors with
>> rechargable battery backups; do they make such a thing?
>
>No.  Supervised 12 or 24 VDC units powered by an alarm panel that has
>rechargeable batteries is the best way to go.  Since you're talking a "life
>safety device", there is no way a manufacturer is going to "stick" a
>*supervised* charger system into a 120 VAC smoke alarm/CO detector.  The
>expense would not be warranted and I doubt you could effectively market such
>a product.  Only people such as yourself would recognize the benefits.  When
>deciding between a smoke alarm that costs $110.00 and one that's $9.95, you
>can pretty well guess which one the builder/electrical contractor's going to
>use.

In my previous post, I considered also suggesting a DIY 'solution' but then
thought better.

Then Frank posted this response which is better than my better ;-)

Thanks ... Marc
Marc_F_Hult
www.ECOntrol.org