Hi Neil,

A great source of information for battery conditioners is in the
Radio-control enthusiast market.

Years ago I built a reconditioner that was just timer based.  It would
drain, then charge a little, drain a little, charge a little more, etc. . .
I got the circuit from an RC magazine of some kind. (1980's or earlier)

A friend of mine bought it off me when he realized that it saved him big
money on rechargeable batteries for his hasselblad camera motor drive.  I
have searched for the circuit numerous times and not found it.  I seem to
think that Tanner Electronics had a kit at one time that was very similar.
You might check with them. They are in Dallas.

Good Luck.

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Pic Dude
> Sent: Wednesday, June 05, 2002 4:55 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: New edge...
>
>
> So you're suggesting that I can restore the
> batteries by chewing on them?  :-)
>
> This thread has gone waaaayyyy off track.
>
> How about a PIC solution?  What I need first is
> some theory on an electrical way to recondition
> the batteries, and I can build a device around
> that.  I'm still sticking with reconditioning as
> a solution since my experiment with manual cycling
> produced good results for me.
>
> BTW, why does a C-section lead to "hence" your
> attendance?  Are you a photographer, c-section
> medical professional, or a c-section enthusiast?
>
> Cheers,
> -Neil.
>
>
>
> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Benjamin Bromilow
> Sent: Wednesday, June 05, 2002 4:24 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: New edge...
>
>
> > Suggestion I heard yesterday is that temperature cycling >the
> battery in a
> freezer is worth trying. Apparently it >works for NiCd and NiMh as well.
>
> I saw a trick the other day that I hadn't seen before. A woman was giving
> birth via Caesarian section [hence my attendance :) ]. Had his
> camera ready
> to take the obligatory photos and guess what.... no juice left in the dry
> cell for the flash/winder. We tried warming the cell, all to no avail. In
> the end the husband bit it really hard until it was almost
> crushed... put it
> back in the camera and voila... got 8 pictures (with flash) before it died
> again. Something about cells being crushed together....... Saved his bacon
> for certain!
> One of those things to keep in the back of my mind (just incase!!!)
>
> Ben
>
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