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Model Forum / Radio Controlled / Helicopters / July 2005



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8.4 volt NiMh charging schematic with auto cut-off

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CrazyC - 25 Jul 2005 06:43 GMT
Hi All,

I'm looking for a schematic for a charging circuit that has an auto-off
feature to protect my batteries.
My EF Sabre Mini Heli has a wall adapter (12 volt DC/300 ma) that connects
directly to the 8.4v battery pack in the heli.  My concern is that it could
damage the batteries and would like to build my own charger instead of "Hot"
charging...

Thanks,
Jay
Funfly3 - 25 Jul 2005 06:51 GMT
why not buy a delta peak charger which will charge them in 40 mins and cut
off automatically?
> Hi All,
>
[quoted text clipped - 9 lines]
> Thanks,
> Jay
CrazyC - 28 Jul 2005 06:31 GMT
Two reasons:
1.  I prefer to build what I can...
2.  A slow charge is better than a fast charge since some batteries can't
handle a fast charge and will die...

"Funfly3" wrote in message:
> why not buy a delta peak charger which will charge them in 40 mins and cut
> off automatically?
 
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