[manachar]

That would take a lawsuit or a powerful battery manufacturing consortium to create a standard and convince DeWalt, Ryobi, Makita, etc. of the value.

Right now vendor lock in to batteries (that have no guarantee of being available in 4 years when the battery inevitably dies) just makes too much money.

[fatboy]

There is actually a consortium like this, but unfortunately most of the brands involved are pretty niche. The only two I'd ever buy from it are Mafell and Metabo.

https://www.cordless-alliance-system.com/

[DarylZero]

Wow it's awesome Metabo and Mafell use the same battery. I'll probably buy some Metabo cordless tools just because of this comment. (Been planning on upgrading some corded tools.)