Thanks David.
Do you know what size or type batteries you fit under the wardrobe? I have 1 AGM there and a Redarc DC so not much room for another one.
There is a small computer fan installed at the back of my fridge too which blows out to the rear shower door but doesn't seem to do much so I might install another one. Do you have any pics or is it all sealed up? I've pulled my Fridge out and have been testing it on 240V which seems to work well. I think I had it turned up too high (number 5) and I've also heard you shouldn't pack the fridge completely full as this obstructs the air flow.
Also, I think you mentioned a cover in a previous post? I was given a cover with the sale and can send you to make/model if you're interested.
Cheers,
Andy