[NSRCA-discussion] charging NiMH with NiCD charger

[Robert Campbell]

Jason,

It's probably OK. NiCad and NiMH charging is essentially the same, except 
with NiMH, the drop off after peaking is much more shallow, requiring a 
different logic to detect.   The "wall wart isn't a peak detecting charger 
and it will damage any battery it overcharges, specifically, it shortens the 
life of the battery.  If I remember correctly is about a 50 mah charge rate 
(charges a 500 mah battery in 10 hrs).  That will take 50 hrs to completely 
charge a fully discharged 2500 mah cell.  So, unless you're leaving your 
transmitter plugged in for several days at a time, it probably isn't hurting 
the battery any more than it will hurt a NiCad battery.

I recommend switching to a peak detecting charger/cycler with a NiMH 
setting.  With proper monitoring, you'll see trouble developing before it 
becomes serious.



Rob


----- Original Message ----- 
From: "JShulman" <jshulman at cfl.rr.com>
To: "NSRCA" <nsrca-discussion at lists.nsrca.org>
Sent: Thursday, October 16, 2008 9:22 PM
Subject: [NSRCA-discussion] charging NiMH with NiCD charger


>I just realized that the battery in my 9C is a 2500 NiMH, but have been 
>charging it with my standard Futaba NiCD wall charger. Any
> reason to worry?
>
> Regards,
> Jason
> www.jasonshulman.com
> www.shulmanaviation.com
> www.composite-arf.com
>
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