It's 2020 and ebikes are here to stay.
I'm trying to retrain my initial urge to consider electronics questions as off topic (which may be because I don't have strong electronics knowledge); if they relate to bicycles even quite loosely, then bicycles.se is a legitimate place to ask them.
We are going to have to accept as on topic, questions about electronics for ebikes, questions about fault finding on ebikes, questions about software for gadgets and power meters, questions about wiring a home-built ebike, questions about charging ebikes at home and on the move, etc etc.
This meta question is prompted by the question Is it possible to charge an ebike from a 12V solar powered battery? which has been warmly received already, gaining upvotes and two good answers so far. Whilst it is about wiring up a camper van, the target is charging up the ebike for cycling's sake and is therefore a long way from programming on a boat. I propose that we become/remain quite permissive about this kind of question, and answers here could discuss what is and isn't on topic for bicycles.se going forwards.
Have at it!