KERS for caravans.......
12v systems do suffer volt drop, but is the battery capable of being charged past 80%?
Solar is great and getting cheaper £50 now buys a decent solar panel that will top up a battery and a £200 array would keep a camper happy.
Wind again is great but would need to be set up each time. More safety concerns than solar too. Parking up for a long time would keep a battery topped up if the conditions were right.
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