Originally Posted by
Aushiker
That looks interesting. What do you charge with it? Would 4w be sufficient to keep a Garmin GPS charged or a phone (assuming minimal use during the day)?
I use a dynohub. I estimate that on fairly flat terrain, I get about 2 watts on average, more hilly get about 1 watt on average. But I am pretty obsessive on keeping my power needs to a minimum. Use a GPS while riding but the phone is off. Taillight is not a super powerful one, but still use one. I am self sufficient on bike tours for power needs.
So, if on average you can get 4 watts, that is more than adequate. But, cloudy days happen, times when your panel is pointing the wrong way are not productive, etc.
If you are curious to know more on what I do, go to this link:
Bike Tour near Lake Ontario and part of Erie Canal - June 2024
and skip down to the section titled: Electrics, Electrical Devices, Charging Devices, and Navigation.