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  • Overall Rating: 4
  • Price: 3
  • Quality: 4
  • Ease Of Use: 5
  • Usefulness: 4
It works well and description appears accurate. – Car Sunshade Board Solar Power Panel Auto Car Battery Charger with Suction Cups Reviews

posted by kelvinang on 04/29/2013 Certified Owner

Involvement:General (knows how to use it) - Ownership:more than 1 month

Pros:
Useful size and form factor. Provided suction cups help in attaching the panel to windows inside the car, or on the inside of the window of the house (as how I had used it). I leave mine permanently attached to a used 12V car battery (without a solar charge controller) and it always keep it well-charged without overcharging it.
Cons:
Seems a bit pricey. The rubber bands around the back of the panel (presumably for easy attachment to the sun shade in the car) became very loose very quickly even without it being stretched (in use).
Other:
I suspect this panel does not have a built-in blocking diode that prevents the panel from drawing power from the battery when the sun goes down, but I can't verify that as it doesn't bother me too much.
Bottomline:
Useful and decent quality panel, albeit a little bit expensive.

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