Battery Shed.

[Richard77]

[nowty]

Currently residing in the house until garage doors are put on, in case anyone wants to wheel them away.

After reading what happened to you though, they might not get far, so I might find them on the driveway with the bearings everywhere!

Yeah they are not the easiest things to steal are they, I don't fear my batteries getting stolen too much,

[NoraBatty]

Similar, but definately different to mine. Even down to the bolts holding yours on. Mine have small (20mm long) 4mm machine screws, yours have m8 by the look.
Look like a larger and sturdier wheel too.