Re: can squeeze 700km from a single full battery charge
Our Kangoo ZE runs the lights and the other non-traction stuff on a hefty conventional 12V battery. Which lasts well beyond the traction battery range.
Unless your Kangoo has a separate engine and alternator to charge the "conventional 12V battery" where the hell do you think it gets charged from? They use an isolated system because the traction gear runs at a different voltage but the power ultimately does come via the traction battery.