We camp every month and it is a challenge keeping electronic devices like phones and iPads charged through the weekend. In the woods you seldom have access to a wall outlet, and the solar charger seems good just for a 75% charge on one device. Memorial weekend I took the Trent: iTorch IMP52D - (5200mAh) that I had charged the prior week. It was small and sleek and easy to pack or pocket. It charged my iPhone twice and still had 50% power come Monday morning. Small enough to fit in your hand, but not at all wimpy, it feels very solid and able to stand up to heavy use.