Power Tool Batteries - what's the difference?
https://www.protoolreviews.com/news/20v ... wer/17024/
but if I was to look in the DeWalt or Ryobi ecosystem - are there different types/quality of the battery/motors within their 20v/18v lines? i.e. - if Ryobi has two impact drills that are 18V, features aside, are they always going to have the same power?