Harry Monk:
The ones we have at work all have removeable batteries so I imagine it wouldn’t be difficult to charge them in or around the cab somewhere although if it was done in the cab (e.g. in the passenger footwell) I’m thinking the battery would need to be secured somehow.
If it’s charging in the cab, the space it takes up, having a heavy mass inside the cab in the event of and accident and any noxious / flammable fumes produced by the charging process might be an issue. A dedicated side locker might be a better option.