I have the backpack version and left it in direct sunlight on a clear day for 2 hours. I repeated the same procedure the next day.After 4 hours of charging, the removable and rechargeable battery had no charge. 4 hours should yield enough power from the surface area of
this panel to re-power a small battery on a cell phone or otherwise but this was not the case. After 4 hours of direct UVA/B light, the battery remained
uncharged. It's a handsome backpack but the cargo space is poor. The problem with this and many other products is that the battery does not
hold its charge as well. Typically, rechargeable batteries lost their charge when not in use. Once, a few months ago, I was able to get a charge... but
just once. The battery sold with this bag is typical in that it does not hold its charge. However it is atypical in that it does not charge hardly at all.
It's not worth half of its vanity price. I would want a clear return policy for any solar-powered device. This was a gift. The U.S. military has successfully
developed solar-powered field-tested flexible solar-powering sheeting and will hopefully soon share that technology with the average consumer. The sooner they
do, the less crippled we feel by the cost of expensive gasoline and fighting expensive wars. Solar power is patriotic.
Bag came with a small usb that I need to buy other adopters for my Gal tap & laps...
Buy Eco Traveler Eco Traveler 17" Expandable Solar Laptop Briefcase Now
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