Are milwaukee and senco fusion batteries the same or compatible?

[Kev]

I was just snooping about at some milwaukee li-ion tools and it struck me how much the batteries look like the ones in my senco fusion bradder.

Does anyone know if they match?

 

[Sean7a]

Kev, they look the same to you because the plastic shells / graphics are similar or the actual interface is similar.  I'd bet big $ they will not be compatible.  But here's one thing to remember.  All these guys source batteries from one of 2/3 places.  It's the same thing wrapped in plastic with little grooves that are proprietary to each vendor and that particular lineup of tools.  Yes, some have different chemistries or chips in them that will make them incompatible, but now and again you could probably file away a plastic tab here 'n there (older Makita 18v Li-ions) and get away with swapping batts.