Just like a laptop panels and batteries are not lightweight or space savvy.
Dynamo hub or solar panel.
I ll be powering 2 headlights a garmin edge 800 and an iphone.
The two products i m comparing specifically are the shimano dynamo hub and the guide 10 goal 0 solar panel.
My preference is to use dynamo hubs.
If you want to charge your laptop on the road solar panels and batteries are your best option.
If you have dynamo lights already do yourself a favour and grab a power supply to start charging your devices.
Solar solar has become more and more accessible with many brands popping up and competition means good prices and more features.
I m looking at around 2k aud for wheel sets myself and partner to be built with dynamo hubs while not a major issue i m concerned i ll get little in the way of mah for my investment when i already have a solution.
My biggest concerns are the rolling resistance on the hub and the availability of sun.
You can choose different sizes for different power a 10 15w panel is more packable and will keep most users well charged.
A 20w would recharge a 20000mah powerbank 2 3 times per sunny day.
The solar panel has the advantage of being usable for other sports and with other bikes should i ever upgrade.