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Old 06-22-2017, 01:47 PM   #6 (permalink)
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They had about 900 watts of solar cells on their previous design. This one looks like it has a bit more than that? 5 square meters is ~53.8 sq ft which is a lot. 40% is VERY HIGH EFFICIENCY - and that means they are expensive.

The motors they use are over 98% efficient, I think. They are hub motors, and they are not cheap, either.
Sincerely, Neil
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