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ranbaxy's Avatar
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#1


The Window Socket offers a neat way to harness solar energy and use it as a plug socket.

More here: http://ibnlive.in.com/photogallery/13364.html
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#2
I would be very surprised it that thing gave out more than a few milliamps.
Single digits that is.
 

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#3
Originally Posted by pichlo View Post
I would be very surprised it that thing gave out more than a few milliamps.
Single digits that is.
It does have an integrated battery. So direct use is not recommended i think.
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#4
And just how large is that battery, I wonder?
I too have looked through the page but nowhere did it mention any specs.
 

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#5
 

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#6
lol quite a joke. 1000mAh is smaller than N9 battery, so it cant even provide 5V usb charging for long

Its a bit late for aprils fools.
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Last edited by rainisto; 2013-05-05 at 11:34.
 

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#7
Had a couple of solars none provided enough grunt now the one i have at least charges the battery that in turn charges the cellp
 

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#8
Ah, somehow I saw the 5-8 hours but missed the 1000mAh.

Still, I call it a BS. You can't escape geometry. The Sun bathes the Earth with about a kilowatt of energy per square metre. That thingy looks like it might be about 5cm across, giving us about 0.002 square metres to work with. At 100% efficiency this would give us 2 watts. Sadly, the most efficient solar cells available nowadays only achieve something between 15 and 20%. Let's be generous and assume 20%. That will get us to 400 milliwats. At full sunlight.

The battery in my N900 has a capacity of about 4500mWh (3.7V multiplied by 1210mAh - a to power status measurement). Assuming constant feed of 400mW we have so generously allowed above, it would take 11.25 hours of full sunlight to charge my phone.
 

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#9
... Not to mention for some reasons, it insist on supplying 220V (or 110V, no idea, but mains voltage level), so you loose another load of power on conversion. It's a joke. I don't expect it to be able to charge standard battery N900 in less than 24 hours of *constant*, high sunlight.
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#10
It was probably not designed for cellphones, it would most likely be good for some green people who wants to run led-lights at night.
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