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Old 01-01-2021, 12:35 PM   #19 (permalink)
S Keith
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Quote:
Originally Posted by rmay635703 View Post
Considering I bought a 300 watt flex panel for $65 (supposedly over 20%EFF)

Who cares?

The benefit
of the 12 volt surviving
Of Possible cooling fan operation
And added free range is worthwhile
And In the winter you could likely use excess power to power the seat heater
Seems like a no brainer as a gimmick and convience option

It’s all about cost, as manufacturers offer it you will drive cost down and reliability up.


I think of all the new car option costs and have to say no one seems to care about buying the $2000 premium audio I don’t see why this is any more efficient
Extraordinarily unlikely you bought a 300W flex panel for $65 especially if it's new. False advertising is rampant on sites like Alibaba/Aliexpress, ebay and Wish. 20% is pretty much the ceiling for the best fixed panels. Flexible aren't better. You probably got a run-of-the-mill 100W panel.

You have to look at the surface area of the panel. If that panel is less than 1.5m^2, no way it's 300W. If flexible, it probably needs to be closer to 1.6 or so.
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