Stuff paying for training, is any of it “specific” or just generic?
To put it into context first time you ever came across smart charging
Just some vague basic information, next brand of car, similar logic but done a different way, so you adapt your thoughts.
As for “repair” most of it will be change parts as once things burn nothing you can do unless you wanna find it catches on fire instantly.
As for training just one person, say that’s a bad idea as useful to hold each other’s hands.
So whoever promoted these lumps of junk should be made to work on them