Originally Posted by Jimmie76

If you'll pardon the pun you're more of a power user than me and I suspect need to charge your devices more than I do. I can usually get by for a week between charges on my Berry (9700) and my Samsung B2100 does usually 3-4 days (and I have a spare battery). I only intend to use this as emergency back up and normally it will stay fully charged from the home electricity via USB and if it wants to get some power from solar to keep topped up, so much the better. Take your point though and I wouldn't suggest anyone rely on the solar aspect for a full charge.