Festool can’t even use the same battery across their tools (and even at the same voltage!) so there’s no way they could handle a standardized battery heh
I wonder what kind of financial motive german manufacturers of cordless battery powered tools like Festool, Bosch, Metabo, Stihl, Einhell etc could have against a standardized battery format for cordless devices...
Oh, and you know that like just like with Apple their first cry will be "but safety!" when/if they are forced to standardize/open up.
A huge swath of tool brands are owned by Stanley Black and Decker (such as dewalt and craftsman and so on) and they can’t even match batteries across their own brands.
A big part of the problem is ANY battery change even to a universal standard is a change away from your current customer base, which will annoy them.