I'm in the process of building a custom trailer for my bike and would like to run 4 hub dynamos to a central point to charge batteries or run a fridge for example. The dynamos are 5v3w each. The trailer has 4 wheels for stability and length. What do you think would be the best corse of action with regard to the connection. Could I connect the 4 in parallel to create 20v12w or would it be better to charge 4 batteries and power the devices from them?
My bike already has a hub dynamo connected to my tablet and phone.
Any and all thoughts would be appreciated.