Recharge the batteries

And again... 
There's something draining the battery intermittently but we can't figure out what. 
Another call to the RAC and, because I was low priority being at home, the expected time kept getting later and later but Charlie arrived just after 3pm to go through the motions. He did have a hunt around and seems to think it could be a known fault with the ignition switch staying on but, being intermittent couldn't replicate it.
Hopefully Renault can get to the bottom of it.