Re: [photo-3d] Ni-MH for Viewers

[Brian Reynolds <reynolds@xxxxxxxxx>]

Linda Nygren wrote:
> Brian Reynolds wrote:
> > 
> > NiMH batteries are supposed to lose about 1-2% of their charge per day
> > just sitting on the shelf.  If you keep a set in a trickle charger
> > before use you should be OK.
> 
> That is about the same as Nicads, I guess. Too bad they can't be left in
> a viewer and maintain charge. Mostly a convenience issue. 
> 

I was under the impression that NiCads have a somewhat lower
"self-discharge" rate than NiMH.

> Thanks for the general battery info. Could you explain in what way NiMHs
> are "better" than NiCads and/or alkalines?
> 

"Better" can be tough to pin down.  There is a lot of folklore (like
NiCad memory) involved with batteries.  The R/C modelers tend to have
good information on batteries and their uses.

NiMH have better discharge characteristics (e.g., handle the high
power draw of digicams) than alkalines, and possibly NiCads.  NiCads
have a bad reputation for "memory" effects (which seems to be really a
charging issue) that NiMH doesn't have.

I haven't used NiMH batteries enough to see if they are really all
that better than NiCad.

-- 
Brian Reynolds                  | "Dee Dee!  Don't touch that button!"
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