There is a little cube of plastic where the battery slides onto the tool that needs to be filed off for the higher amp hour batteries to fit. I have done it to all my older tools that I still use. Mike
I believe this is the info from the FOG site Makita LS1019L miter saw mini review https://r.tapatalk.com/shareLink?share_fid=11638&share_tid=53408&url=http%3A%2F%2Ffestoolownersgroup%2Ecom%2Findex%2Ephp%3Ftopic%3D53408&share_type=t Mike