Solar Slang

I bought one of these last year from Maplins and I took it back thinkng it was faulty, they exchanged it and it was still rubbish.
To charge from your computer and to use as a spare battery for your phone, great. But even leaving it in the direct sun light, in spain on holiday still didnt give it a decent charge.. it took days to charge, even in direct sun light. I thyen bought a Solio… buch better, charges faster and really works well even in the UK.
Great vidio though… well explained.