Based on another thread about smartphones and tired of finicky solar chargers I bought an Anker Astro 2 backup. This is not a full review but would just like to show it off. I unpacked it tonight after buying from Amazon for $37.
This unit provides 8400 MaH of power with a 1 amp usb and 2 amp usb port. It will recharge your Iphone 5 (1440 MaH battery) four times and an Ipad 2 twice. It has a flashlight function and a mirrored front face. Multifunction!! At 6.3 oz it is little heavier than other models, but it will provide more than ample power for long trips for those of us that use our gadgets a lot.
My Ipad was dead and within 20 minutes I had 15% battery. at 1 hour & 40 minutes It has charged to 48%.
