Hey Canis
That's not as crazy as you think.
Picture the old hub dynamo's on old pedal cycles.
If the caravan wheel hubs/brake back plates were to incorporate similar.
....but then think about the fact there has to be a electrical link between car and caravan for lighting anyway making separate charging unnecessary.
Unless we make the vehicle to caravan lighting link wireless
...look what you've started
As for the 80% charge theory, my caravan battery always shows full after being towed. Maybe that's down to the quality of my car charging system
Hello Ksmi,
Yes solar panels are already fitted to many a current caravan model but as a rule they only maintain the battery at its last charged level.
...as for your wind turbine thought. What about harnessing energy from the free spinning vents you see on RSPCA van roofs...
So many ideas but then when I think about how the uk caravan industry is hell bent on building leaky lightweight vans then the less electrics inside the better.