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Probably because a solar panel can produce electricity for many years.
OVER 9000
It depends on how many watts each panel can produce.
1 kilowatt equals 1000 watts. An 80 watt solar panel under ideal conditions produces as you might guess 80 watts. So under ideal conditions it would take 12.5 hours for the panel to produce 1000 watts. (1000/80=12.5)
silicon solar cells of 2 sqcm produces 0.5V and power of 0.7W. So to get 20Volts 40 solar cells are to be connected in sieries.
There are many ways one can build a solar panel. One can build a solar panel by making a template for solar cells, putting a frame together, and sanding the whole thing down.
One solar panel is 250w
18kwh
depends 10 or more
I did not locate a solar panel laptop itself, but there are solar panel laptop charger for the laptop battery. these will last many years and substitute for buying a laptop battery every year.
it depends on your solar panels, i can tell you if you know the amperage and the volts, you can find the amount of watts it produce, the equation is watts = amps x volts. hate to give you an equation as an answer
Well... Could it be a Solar panel?