Question:
I have a set of solar powered garden lanterns I need to use for a play. The man at the store said to leave them in full sun (I'm in England, so that's never going to happen!) for three days before turning them on. However, I need them before that for rehearsals. Is there a way to quickly and artificially charge solar cells? What sort of artificial light works/works best in charging solar cells?
Answer:
Any form of bright light will do, but sunlight, because it is so bright, works best. The three day initial charge is needed only for the first time, if at all, and after that you can simply recharge them during the day and recharge them at night. Another thing to try would be this: your typical solar garden lantern has two rechargeable AA cells. Try replacing these with alkaline batteries (take note of polarity), and the lanterns should work. These cells can be removed after the show and re-used until exhausted.
I found some good info here.
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