ReVIVE Solar ReStore XL 4000mAh Solar Charger Power Bank & USB Rechargeable External Battery Travel Pack w/ Universal USB Charging Port & High-Efficiency Solar Panel for MP3 Media Players, Smartphones , E-readers , iPad and More!
I knew from reading other reviews that this charger can only charge to 50% with sunlight, so I was prepared for that.  I used this on a camping trip.  Before I left on my trip, I used the usb to charge it to 100%, so I had a full charge on my phone after the first night.  Then, I would leave it on the dash in my car all day, and charge my phone overnight.  My phone only charged to about 50%, but it was better than nothing at all.  Since I was on a camping trip, and didn't really need my phone for all my nor