[Elecraft] KXBC3 charger question

[Eric Norris]

I dunno about smoke detector batts, BUT--in my extensive tests with
rechargeable v. non-rechargeable CR123A batts for Arlo cameras, the
non-rechargeable ones last twice as long.  I hate to generate the excess
waste, but hauling my degraded carcass up a ladder twice as often while
alone and afraid :-) isn't worth it any more.

73 Eric WD6DBM

On Tue, Oct 5, 2021, 1:22 PM jerry <jerry at tr2.com> wrote:

> I have a related questions about batteries discharging... Not really
> about ham radio, all please feel free
> to delete...
>
>    We have a *lot* of smoke detectors.  They are the kind that runs off
> the AC, but each one has a backup
> battery.  The other day, one started beeping...and beeping...and
> beeping.  That momentary beep that says
> "change my battery!".
>
>   Amazon couldn't get me batteries the same day.  And the beeping makes
> it hard to sleep.  So I went to the garage
>   and got one of a set of rechargeable lithium 9V
> rectangulars that I had bought for test equipment - DMMs and such.
>
>    The old battery in the smoke detector was 7.88V.  The lithium - 9.4.
> Installed it...and no beeps!
>
>    It's tempting to just load all the detectors with lithiums.  The
> alkalines last a couple years.  Maybe a fully-charged
> lithium would last as long... and then you recharge it?  If so, they'd
> be a good deal.  If OTOH they only last a couple months,
> that's NOT a good deal, because I'd have to get out the ladder etc every
> time.
>
>                ??
>                     - Jerry KF6VB
>
>
>
>
> On 2021-10-05 11:08, Don Wilhelm wrote:
> > Eddy,
> >
> > The most likely answer is that your batteries are self discharging.
> > NiMH batteries will do that, although there are low self discharge
> > batteries available that you should look into.
> >
> > 73,
> > Don W3FPR
> >
> > On 10/4/2021 11:14 PM, Eddy - k6sdw wrote:
> >>   I have a KX3 with the KXBC3 Nimh charger and Nimh batteries
> >> installed. My
> >> question is: What's the current drain on the NICADS when I store the
> >> KX3
> >> for long periods of time? The KX3 is primarily used for portable
> >> operation
> >> and when I put the KX3 on the bench the batteries are dead needing
> >> recharging. I wonder if I should pull on AA battery out during
> >> storage?
> >>
> >>
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to jerry at tr2.com
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to norrislawfirm2 at gmail.com