This is a very good solar charger without the bulk (11 1/2″ X 6″)
I chose this solar charger mainly because of its compact size. Even though it’s only 9 watts it seems to do the job. In addition to this solar panel I also ordered two Dulla 12,000mAh power banks that arrived 1/2 charged. I plugged the first Dulla power-bank into the panel at about 12:30pm and by 5pm it was fully charges (all 4 LED’s were lit up). This is a very good solar charger without the bulk (11 1/2″ X 6″) other panels sold on Amazon.