What about the general electrical nature of your ebikes if you don't mind me asking. Is there much proprietary about them, as the years pass will there be issues replacing batteries, controllers or the hub motor itself with third party options? I realise if the battery pack is designed for the frame itself, re-celling may be the only option or fitting the battery elsewhere on the bike. Is there any reason after lets say 4 years of reasonable to high use with battery end of life or hub issues you couldn't fix it with more generic parts? Is there any proprietary handshaking between any of the components like controller to battery or controller to display etc?
batteries most the time are easy to replace they fall into several catagoes and are fairly standardized 1 battery from 1 type should fit another from the same type even the behind the seat batteries are all the same battery with only minor non consequential differences (2 vs 3 pin)
controllers are a different story but still no hassle the chances of you finding your replacement controller again might be challenging as they contain little to no details on them but good news it hardly matters when you buy a new controller you usually get all the accessory parts along side it so you can just do a full controller replacement which will include pedal sensor throttle if you have one controller screen and maybe even lights there trivial to replace if you can buy a xbox and install it into your living room tv setup you have more than enough technical knowhow to swap controllers and people here can help you find a suitable replacement if need be but don't expect to be replacing controller for a while
as for proprietary stuff
batteries are beyond dumb when it comes to talking to the controller they just send voltage and the controller figures out charge level based on that
over charge and over discharge are handled by the battery itself the controller has no say in the matter
over amp is handled by the controller and the battery separately the 2 do not talk
as for the controller its going to want to talk to its screen in its own special way but a replacement controller will include its own screen and probably any other accessories that also talk its language
for batteries mostly standardized tbh if you buy something where they hide the battery in the frame or moulded in somehow possibly you might have issues but if the battery is either rack mounted behind the seat mounted or looks like it got bolted to the frame as a afterthought its gonna be a standard battery you can get anywhere
recalling the battery is a option.... id rather you just bought a new one as cost wise that isn't going to be cheaper and your inviting trouble to the door if its not perfect which negates any benefits to recelling
