What 20v batteries are interchangeable?
Besides, which power tool batteries are interchangeable?
The different sizing of the cordless battery slot itself causes each brand to have its own battery pack size even though they tend to have the same voltage. The Porter-Cable and Dewalt for example which both have 20 volts lithium-ion cells are not interchangeable without some modifications.
Also question is, are DeWalt 20v batteries interchangeable with craftsman?
Porter Cable, DeWalt, Craftsman, Black & Decker, & Mac Tools all seem to use the same 20v lithium ion battery system system, as if made by the same parent company.
Craftsman Bolt On and B&D Matrix are fully interchangeable, batteries and tool heads. Same tools with different branding. IIRC from a post a while ago, porter cable 12v and black and decker 12v are compatible if you remove a small tab from the porter cable battery.