As a public service I can post a schematic of a 8 cell AA
NIMH trickle charger you can build in about 30 minutes for
under $10. All you need is a wall wart power pack of sufficient
DC voltage/current, two 4 cell battery holders, and a resistor of the
correct
value and wattage. About the simplest project ever. A six
year old could build one.

JC O'Connell
[email protected]
 


-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
Bruce Walker
Sent: Monday, December 22, 2008 9:19 PM
To: Pentax-Discuss Mail List
Subject: Re: rechargeable batteries - any wisdom?


JC OConnell wrote:
> Do you really charge your batteries and not use them
> for over a month or go 6-9 months before using them?
>   

My uses are mixed.  The P&S often sits idle for a month or two before 
suddenly getting called into action.  The Pentax gear usually only parks

for a week or two (I'm more of a weekend road-warrier).  I have 
active-noise-reducing headphones (Sennheiser) that will go for months 
with a couple of AAA's in them before I need the active circuitry to be 
powered.


> I dont.
>
> I have three sets. I fully charge one set, put in camera.
> if and when that dies, I have two other sets fully charged ready to go

> at any time on a trickle charger.

That's a good way to go, though it requires a few chargers.


>  I dont
> need those kind of batteries and I doubt you do either
> unless you actually only have one set of battteries
> and like to charge them and then not use the camera for
> weeks or months.
>   

I have one good charger that I paid $80 for.  I'm not going to buy 
several more, one for each battery set I have on trickle charge 
constantly.  I have several sets of cells, in-camera and ready for use; 
in-kit-bag and ready for swapping with the in-camera ones.

OK, we've identified that my usage and yours vary such that you have no 
need for these cells.  I like 'em, they can be used like regular dry 
cells (some people put them in TV remotes), they work for me.  They 
apparently suit a few other people too.

-bmw

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