Quote:
Originally Posted by cfg83
Problems:
a - I don't know if you need special "in between" electronics to keep the battery from being damaged. Maybe you do, maybe you don't, maybe it depends on the panel?!?!?!
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You'd need a charge controller - a little circuit designed to dump power once the battery comes up to a pre-set voltage. Otherwise, depending on the strength of the panel, you could overcharge the battery.
But the most damage will come from simply discharging deeply. Batteries don't like that, and only have so many cycles in them.
I'm in agreement with metromizer: a fun energy efficiency project, but not something to undertake if the goal is saving money.