5 of 5 people found the following review helpful
This review is from: Powertraveller Solargorilla 5V and 20V Solar Portable Charger (Electronics)
In bright sunshine, 40C heat and only 8 degrees north of the equator (southern Thailand) I fully expected this to charge my phone and kindle fire HD easily. No!
My kindle was losing charge as I read (The kindle pointed out this was a low power source and I'd have to shut the kindle down to let it charge.)
The phone was even worse - I have a battery monitor app and at 10am when I connected it the phone was 30% charged. The app predicted 11 hours to full charge. By noon it predicted 10 hours to full charge.
There was not a cloud in the sky - I would have fried if I stayed out in that sun. So this is a waste of money and luggage space. A huge disappointment.