I had a compressor sitting beside a regular furnace. I had used the compressor to create compressed plant clumps and it was sitting empty but with a half used battery in the bottom slot. It exloded into tiny little pieces!
Well not really, but it did explode and took the furnace beside it and the small chest beside the furnace. Not sure what I got back out of the unit as I was standing beside it with my inventory open, all of a sudden I was down to 1/2 of a heart and some stuff all over.