Re: NIMH issues
- From: Jasen Betts <jasen-b@xxxxxxxxxxxxxxxxxx>
- Date: Fri, 14 Oct 2005 21:12:23 +1300
On 2005-10-11, <RJ> <baranick@xxxxxxxxxxxx> wrote:
> HELP from over in rec.photo.digital
>
> The new digital cameras are power hogs !
> Industrys solution is the nimh battery.
> PROBLEM;
> Camera user manuals "promise" 150 > 200 pics
> per fully-charged battery set. ( 2 X AA cells )
>
> Many of us are seeing 40 > 50 pics before the
> camera shuts down saying "battery discharged"
200 pics was probably done in low resolution mode without using the flash
Solution carry spare batteries in the camera case.
> A trypical ( Energizer ) charger says;
> "Let batterys charge 8 hours"
Get a better charger. ideally one that you can run in your car
and that charges in fewer hours, tyhe one here claims to be able to charge
1800ma NIMH cells in 3 hours.
> QUESTION;
> a. How do we know the batterys are "fully charged" ?
my charger has a red light that goes green.
> b. When the camera says "not enough power",
> How can we verify this ?
ask it again. :)
> I've put my trusty SIMPSON meter
> on a fully charged nimh battery.
> It reads 1.3 volts,
load the cell with say a 3.3 ohm 1/2 watt resistor and measure the voltage.
or yse one of those testing strips energiser was giving away with their
batteries a few years back (last time I bought energisers)
> and about 2.1a using the 10 amps setting.
prolly not real good for the battery doing that.
Bye.
Jasen
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