
So turns out it's not very big.

Existing Dimensions L/W/H
85Ah Leisure Battery: 250x170x210 (at back and 185 at front, the terminals are in a recess)
Tray looks to accommodate: 270x170x190ish
I'm hoping I can just unbolt this thing and pull it out. I've been reading that Willinton supplies a large tray that can take a 110, can anyone advise if that would bolt into this space once this ones out? I've got some tools but no workshop, tho if it's not too tricky I'm sure I can do it. I don't think I can make my own tray and bracket.