Probably a dumb question but recently I had to use my little lithium jump start battery to start my Plus 4 as the battery had gone flat. It worked perfectly but it was a real pain to take all the luggage from behind the seats, undo the screws to the battery cover behind the seats, move the seat forward etc and access still wasn't easy to get the clips onto the terminals. Is there any way to start the car using the jump starter battery by connecting to relevant points under the bonnet? Wouldn't have been much fun if I had been away and it was raining...