July 25, 2009
How many watts do I need for a laptop – and other solar power questions?
Info Sponge asked:
Hi there,
I'm trying to get a very basic understanding of solar power.
Hi there,
I'm trying to get a very basic understanding of solar power.
Can you tell me:
How many watts is required to run a laptop off power
And how many, roughly, to charge the laptop battery
how many for an mp3 player
a cell phone: simple -> smart range
a table lamp
a ceiling fan
a floor fan
a window a/c
Just want to get a feel for it!
Thank you in advance!
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Comments on How many watts do I need for a laptop – and other solar power questions? »
sounds like you need to use ohms law wats =amps x volts or volts = amps X resistance if you are still having trouble you can always call the manufacture and ask
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The only item which will consume any large amount of power will be the air conditioner.
Your laptop is likely to be about 50 watts – they vary – the cell phone almost nothing.
Table lamp – look at the watt rating on the bulb. An LED will be the lowest, but most expensive, but still worth it.
Ceiling and floor fans are low, we have a 60" ceiling fan here which uses less than a 13 watt CFL on the lowest speed.
The air conditioner could be 1,000 watts or more. That's an energy hog.
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