Sometimes I get ahead of myself. I was looking at the NiMh D,C and sub C with the mechanical pre-welded connectors. They're mainly used in power tools but I was thinking of different ways to store energy from a PV setup.
If this is a serious project, you're off by a factor of 10 or more in scale. A 1-m sq. PV panel should be about to see 5kWh of solar energy, which, when all is said and done, is about 0.5 kWh of usable electricity. A portable drill battery might be good for 0.05 kWh, so you'd need 10 of them to store the energy. But, since 0.5kWh is essentially a 100W light bulb for 5 hr, that's close to useless. You'd need a scale factor of 10x to 100x to be doing anything serious.
In the future, I suggest that you do a more thorough search to find a more suitable forum for your questions, like:
forum631, forum633, or forum626
TTFN
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