2007-06-02 17:03:20 · 8 answers · asked by hysrchrd 2 in Science & Mathematics ➔ Engineering
Already have that. The "malibu" lights around my house charge AA batteries all day, and in turn the batteries run LED lights all night. maintenance free. my girlfriend has floating lights in her Koi pond that work the same way.
2007-06-03 04:25:51 · answer #1 · answered by lare 7 · 0⤊ 0⤋
technology and economics are both limiting factors.
You'd have to create a miniature solar cell geared to charge the right size battery, mount it on the battery and not change the battery's size.
While you can obviously conceive of this, is it possible to create that small a solar cell at this point in time? I doubt it. If it was, we could make solar more affordable on the larger scales.
If you can make it that small, are people willing to pay for it when regular old batteries are under a buck apeice?
2007-06-02 17:08:13 · answer #2 · answered by MithrilHawk 4 · 0⤊ 0⤋
1
2017-02-28 01:40:38 · answer #3 · answered by Sallie 3 · 0⤊ 0⤋
They already sell them. Problem is, they take a long time to charge. So if you need batteries for cameras, etc, you'd need a lot of them and a lot of chargers. Plus, look at the price.
2007-06-03 13:41:33 · answer #4 · answered by Doug B 3 · 0⤊ 0⤋
Probably because it takes only a few pennies to charge batteries using a standard electrical charger and the chargers are inexpensive.
2007-06-02 17:40:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋
already have protected patton on that i found. seems the size of the photovoltaic cell surface efficientcy is the limitation.
2007-06-02 17:51:45 · answer #6 · answered by johnjohnwuzhere 3 · 0⤊ 0⤋
That sounds like a really good idea.
2007-06-02 17:06:47 · answer #7 · answered by Brock Samson 3 · 0⤊ 0⤋
Thanks for the invention idea. I'll let you know what my patent number is.
2007-06-02 17:06:07 · answer #8 · answered by Stuart 7 · 0⤊ 0⤋