This is a great powerful tool gets the job done it's only flaw is it's power demand this thing eats up batteries way to fast I got 2 4.0AH batteries for it but found myself using 3 chargers with 2 of my 3.0AH batteries in rotation to keep working with it after the 3rd battery I have to wait for them to cool down before they will charge and have to stop using it for 45+ minutes at this point this is a occasional use tool for small jobs! I am setting up a rebar mesh to replace my porch floor with concrete and have to cut every bar if I am lucky I can cut 5-6 1/2 rebar before changing batteries! I am glad I have electricity were I am working since I am going to have to buy a corded model to get anywhere!! I don't know if a brushless motor would have helped? but the way I see it only a 6.0AH or better like a 10.0-15.0AH battery would make the runtime useful or a 120v adaptor to run it of AC never to run out of power in the middle of a cut!