Re: We need this for Rechargeable batteries
From: Alan Browne (alan.browne_at_FreeLunchVideotron.ca)
Date: 10/30/04
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Date: Sat, 30 Oct 2004 11:57:11 -0400
Mike Fox wrote:
> Anyone who has used rechargeables knows they eventually die.
> They start out with umpteen thousand mAh [milli-Amphere hours], and
> they get weaker and weaker as the months go by until one day the GPS
> quits in the middle of a long hike when you're really counting on it.
The proper way to use a GPS on a hike, of any length, is to verify position when
out of tree cover / masking, compute a new mag heading and then shut it off.
Even 1 hour worth of batteries will get you through a two day hike this way.
And map reading is much more interesting, in any case.
>
> I wish someone would sell a battery capacity meter. You'd stick a
> battery in it, and it would put a typical electical load on the
> battery and run it flat at which time the metter would beep and show
> the battery's current capacity in mAh.
If you have a volt/ampmeter and a resistor (5 or 10W) you can rig this up
yourself. In any case, one usually has good indications when batteries are
losing their ability to take a charge... and by avoiding 'fast' charges,
batteries will last a very long time.
-- -- rec.photo.equipment.35mm user resource: -- http://www.aliasimages.com/rpe35mmur.htm -- e-meil: there's no such thing as a FreeLunch.--
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