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They have different size on the website, but it really depends on how large your bicycle battery is. The largest one is 60W and ways 1.7kg. A small bicycle like that might have 300Wh or so. Since you probably just lay them on the ground and they are not 100% efficent anyway with charging you need 10 solar panels or so to charge your bicycle up within an hour.

If you want it for a cycle trip, then you are probably better of having a fixed panel on a trailer. That way you can charge during the trip and non flexible panels are much more efficent. You end up with something like these.

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ExLisper@lemmy.curiana.net ⁨2⁩ ⁨days⁩ ago
I’m not looking for existing product. I don’t think anything like this exists. I’m just wondering if it’s possible to make with existing solar panel tech. Something like rescue foil solar panel. Or does it need some plastic casing?

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- poVoq@slrpnk.net ⁨2⁩ ⁨days⁩ ago
  With silicon based cells this seems unlikely, but with Perovskite based cells it exists already.
  
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  - ExLisper@lemmy.curiana.net ⁨2⁩ ⁨days⁩ ago
    You’re right, looking for Perovskite I see publications about foil based solar panels. Thanks, I will dig some more.
    
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    growsomethinggood@reddthat.com ⁨1⁩ ⁨day⁩ ago
    Cadmium telluride might also be of interest
    
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