Check that the 12v socket is always live.
If it is it can be used for charging your battery.
I did that on my 2011 Plus 4.
However I found the connection to be a bit intermittent, so connected a separate fused connection to the battery and to a socket on the shelf behind the seats to make the connection easy to access. I use a CTEK charger and cables.


Ian
2011 Plus 4
Wild Mogs Reims 2019, Goodwood 2018, Isle of Man 2017, Carried on to Caramulo" 2016