Thanks for the update.
_________________________________
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: "Hughes" <hi100@xxxxxxxxxxxxx>
To: "Olympus List" <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, May 19, 2003 10:16 AM
Subject: [OM] Motor Drive 2 - What to look out for
>
> For rebuilding Battery packs people on this thread have said that
nobody makes NiMh 1/3A
> cells, although some have used 1/3AA NiMh cells. In fact GP Batteries,
a large Chinese Battery
> vendor lists 1/3A NiMh cells in their catalogue. These are 450mAh (min),
500mAh nominal. These
> should be capable of about "3C" in other words 1350mA peak current, which
should be more than
> enough given the nominal spec for the MD2. Although the OM charger should
work with these cells it
> will likely degrade the NiMh cells, particulaly if they are left on for
extended charge periods.
> The cells are specd to last a year or so in overcharge but I am somewhat
sceptical given general
> issues with overcharging NiMh. Also cell charge efficency drops at the
lowish charge rates of the
> Oly charger (probably less than C/10 for these cells), so determining
ideal charge time maybe
> require some testing. Even though GP lists the 1/3A cells in their
catalogue, they may only build
> to (large) order, so they may not really be available retail. I have not
tried to find a retailer,
> although many suppliers list the more common size GP cells, like full size
AA.
>
> I have been trying to get Huanya another Chinese vendor to sell me their
1/3A NiCd cells (300mAh)
> which have a higher rating than the more common GP brand NiCd's (250mAh)or
Sanyo cells, but they
> don't stock cells, so unfortunately you need to order a really large
number before they are
> interested in doing business.
>
> The 1/3A NiMh cells from GP are attractive on paper, but would require
some investigation to find
> best charge times with the Oly charger.
>
> Regards,
> Tim Hughes
>
>
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