charge voltage [RE-wrenches]

[Kurt Nelson, SunWise]

Richard Perez, Home Power magazine wrote:
> 
> Hello Kurt
> 
> Sintered plate alkaline cells are floated by current not voltage. Use
> the C/20 rate (50 mA for a 500 mA-hr cell) and you can float them for
> days.
> 
> Hey Richard and thanks.  I realize current is the way to float, I guess I should have mentioned that I was attempting to make a "match" between the number of 150 mA PV cells in series with three AA ni-cad batteries in series (3.6 V, 600mA).  I say "match" because I was hoping to do an unregulated charge with this larger panel and look to the power curve of the panel to due some self regulation.  I have a bunch of cordless phone battery packs and a bunch of 8 and 10 cell encapsulated hobby panels.  I've been messing around with them and some white LED's.  The LED's regulated circuit can see anything from 3-14VDC.  Would the battery pack be over-charged if the pack came up to near OCV of the 10 cell panel (5V)?  Seems like the 4 volts of the 8 cell panel would be way lite?  I realize this is not an ideal way to charge such a battery, but thought it might work out, especially with NiMH, which would not have as high a tendency to develop memory?

I should have explained better, but maybe the answer is the same.  Not a
good way to charge?

Thanks, Kurt

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