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Re: [OM] Flash/Batteries questions

Subject: Re: [OM] Flash/Batteries questions
From: "John Hermanson" <omtech@xxxxxxxxx>
Date: Thu, 20 Jun 2002 16:33:51 -0400
A get a lot of life out of 1700 mah  Eveready Energizer (with the green
stripes) in my E-10.
_________________________________
John Hermanson  www.zuiko.com
Camtech, Olympus Sales & Service since 1977
21 South Lane, Huntington NY 11743-4714
631-424-2121 For Free Olympus manuals,
please call 1-800-221-3000
_________________________________
----- Original Message -----
From: "John A. Lind" <jlind@xxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Wednesday, June 19, 2002 11:20 PM
Subject: Re: [OM] Flash/Batteries questions


> At 20:45 6/19/02, C.H. Ling wrote:
> >After 54 consecutive charge and discharge cycle (no wait
> >time in between), the flash dead :-(
> >
> >C.H.Ling
>
> I get a noticeably faster recharge cycle with NiMH compared to alkalines,
> particularly during the last half of life when an alkaline's internal
> resistance begins to rise (voltage starts to drop off).  NiMH (and NiCad)
> hold voltage very well until the very end.  Current NiMH "AA" cells have a
> much greater capacity (in mAH) than NiCad cells do.
>
> I've been using 1600mAH NiMH cells in two T-32's without any problems.
The
> clue to C.H.Ling's "fried" T-32 was in his last sentence:  "54 consecutive
> charge and discharge cycle (no wait time in between)."  Nearly all shoe
> mounted and most handle mounted flash heads have a duty cycle.  They
cannot
> be continuously fired like this without eventually overheating and the
> circuitry gives up the ghost.
>
> All this stuff runs on pressurized smoke.  As it heats up, the pressure
> from it increases.   If the pressure from gets too high, it springs a
> leak.  If enough smoke leaks out, it stops working.
>
> -- John
>




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