No sorry you need the black/grey battery pack for the ATEX model. It has different splines in the casting to ensure that "non-intrinsically-safe" battery packs cannot be used. For obvious reasons....Boom!
If you don't want to use it in an ATEX rated area then snip the battery box off and fit a yellow "standard" box on in its place. Buy a scrap torch off eBay and pinch the battery box. Or cut open the black/grey pack you have, ditch the dead cells and fit some 18650 cells into it. 3 will fit, just ;)