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the issue with nimh is that plain trickle charge is not appropriate.
you must remove charge current when the cells are full charge.
the HB charge circuit just doesn't do that. i'd really recommend
switching back to nicad.
fred
In your message you said:
> Would installing a diode (power diode, >3A ?) into the +ve line of the batte • ry pack
> be suitable to prevent the power circuitry of the HB from trying to recharge • the
> nimh cells ?. Or do I actually need to do anything at all ?, i.e. the nimh c • ells
> just won't recharge ?.
>
> Any information would be greatly appreciated.
>
> John Hatton
> johnhatton@email.com
>
> John Hatton wrote:
>
> > Should I modify the hb circuit to disable the recharge circuitry if I am u • sing
> > nimh batteries or will the circuitry just not recharge the batteries ?, i. • e. no
> > damage to the cells by using them on an 'as-is' board.
> >
> > As an extra question to the list in general, does any one know what circui • try is
> > used to recharge the nimh batteries ?, I don't want to dismantle my charge • r to
> > find out so any information would be greatly appreciated
> >
> > Thanks for your help.
> >
> > John Hatton
> > johnhatton@email.com
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Message is in Reply To:
 | | Re: nimh batteries
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| Would installing a diode (power diode, >3A ?) into the +ve line of the battery pack be suitable to prevent the power circuitry of the HB from trying to recharge the nimh cells ?. Or do I actually need to do anything at all ?, i.e. the nimh cells (...) (26 years ago, 21-Sep-00, to lugnet.robotics.handyboard)
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