But wait: there's more!!!

There are a number of battery adapters that will allow a specific brand to be powered by other brands batteries Scroll all the way down:

https://www.google.com/search?q=powertoo...280&bih=578

As might be expected, Youtube has a number of videos on the topic:

https://www.youtube.com/results?search_query=interchangeable+battery+power+tools

Some of the brands have a battery replacement adapter with a cord attached to let you convert some battery powered tools to AC power:

https://www.mscdirect.com/browse/tnpla/44461317?cid=ppc-google-New+-+Power+Tools+-+PLA_sToIU3t0E___164110813665_c_S&mkwid=sToIU3t0E%7cdc&pcrid=164110813665&rd=k&product_id=44461317&gclid=EAIaIQobChMI2ZOk9Oz47AIViLLICh0RIgAyEAQYBSABEgJnKfD_BwE

The country of origin appears to be what you might guess, and reviews are, shall we say, uneven.