yeah & not sure how many ppl want to ride around with this thing

"Nowadays, you can get a 16W folding solar panel for around £40. One of the best is from RavPower - it's light and also waterproof. I used it together with a 10000 mah power pack when I was touring in Scotland last summer. It absolutely does not need direct sunlight to charge - even on totally overcast days, you get enough current to top up your power pack. Admittedly, when it rains, you don't get any charge at all. If you have a lot of gadgets with you, then a solar panel might not be sufficient. I had my phone, my Garmin GPS, a small camera and a tablet. I managed easily for a week, even though it rained solidly for two days - it was Scotland, after all! My point is that for quite a modest outlay (£40 for the panel and £20 for the power pack) I had a system that was enough for my needs. If you want to see how I rigged the solar panel up to the bike, see the photo attached."

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Beautiful pictures.

Here is the ravpower on Amazon. It looks like it would work, but you have to use it just right. It costs $62 and weighs 16 ounces (450 grams) so it makes sense for only a few people. And once again, an external battery suits most people better than a dynamo or solar charger.