Makita batteries are probably what counts as the de facto universal battery format in East Asia. Lots of brands off AliExpress are compatible with each other and Makita batteries.
Also unlike some other tool manufactures they still sell all the models of batteries for all the cordless tools from the late 1970's to today. They were the first company to make cordless power tools too. I just find it crazy they still sell batteries for tools getting almost 50 years old.
-edit (added a link)- These batteries are brand new and will work in a makita tool made in 1978. https://www.makitatools.com/products/details/B7000-B-10