Re:

[Seth <sethea@mediaone.net>]

I was talking about both. I have seen recirculation in PbA and NiMH. I
have almost no experience with NiCad so I can't say much about those.

PbA are probably the most difficult to keep equal. If the modules are
not all at *exactly* the same temperature, then they don't equalize  And
they do not discharge or charge the same. You can watch it on an
amp-hour meter during charge and discharge. If you aren't careful you
can get large differences quickly. Some other chemistries (notably
NiCad) are more tolerant to temperature variation. 

Give me a series string to charge any day.

In a perfect world, where all the batteries are at the same temperature,
and the temperature is the same *from one end of the battery to the
other*, then they will likely have no problem equalizing. But this is
hard to do, even with insulation and thermal management. 

-Seth

Give me a series string to charge any day. And anything but lead.

 
"VanDerWal, Peter MSgt" wrote:
> 
> Except we are not talking about NiMH packs here we are talking about
> lead-acid, totally different animal.
> 
> Lead-Acid packs charged in parallel are automatically at the exact same
> voltage which by definition (for Lead-Acid) means they ARE equalized.
> 
> >I have found that paralleling requires more eqaulization than series
> >strings. I have seen recirculating currents in paralleled packs and have
> >heard of it burning up NiMH series/parallel packs.
> >
> >>
> >> Are the batteries normally kept in parallel? If so they will
> automatically
> >> equalize themselves. Equalization charges are only needed or series
> packs.
> >>