Now if you know me, you know I am a huge fan of Milwaukee for a number of reasons. However, I was never a big fan of their M18 grinder.  While it did the job, I had problems with the Overload Protection and how easy it would kick on.   Well guess what, Milwaukee made some changes and made this grinder a winner.  Now I am not saying that because I am a Milwaukee fan, I am saying this because it’s a cordless grinder that actually works.  It does what it should and doesn’t kick off.

Milwaukee started out by using a brushless motor and a 4.0 A/h battery to give this longer run time, more power and a longer life.  The capacity is either 4-1/2″ or 5″.  First, is the grip.  The handle is slim and has a nice rubberized grip to help provide a better fit for the user.  Towards the back, they have a protective screen to help keep fine metal and dust away from the intake.  What’s nice is you get two screens, so if you break or loose one, you have an extra. You can easily take or put on the screen and it doesn’t get in the way of your hands.

As with their previous model, you can change guards or positions on the guards without any tools.  Just press a lever and make your changes.  Now I am not sure about the gearing system of this grinder, but my understanding is it uses the same gearing system as their corded grinders, which I have had great luck with.  Using the tool is the same as previous models which is a paddle switch.  Our version didn’t have a lock (2780).  Milwaukee does sell this grinder with a locking paddle which is model 2781.

If you know me, I am not a huge fan of upgrading your tools when a company comes out with a new model.  There are certain times I do recommend this and in this instance, I see the upgrade as worth it.  Well if you use your grinder often.  If you use your grinder once or twice a year, I would stay put.  For everyone else, I would upgrade.  The biggest reason is the power.  No more cutting out and lots of power to grind or cut.  To be able to have this much power without having to drag around a cord is huge.


Weight5.8 lbs
Tool Warranty5 Years
Speed8,500 RPM
Arbor Size5/8″-11

Included Items in Milwaukee M18 Fuel Grinder

  • (1) M18 FUEL™ 4-1/2″ / 5″ Grinder, Paddle Switch No-Lock (2780-20)
  • (2) M18™ REDLITHIUM™ XC 4.0 Extended Capacity Battery Pack (48-11-1840)
  • (1) M18™ & M12™ Multi-Voltage Charger (48-59-1812)
  • (1) Carrying Case
  • (1) Flange Nuts
  • (1) Wheel Guard
  • (1) Spanner Wrench

All in all this is a great addition to the M18 Fuel line up.  With lots of power and great balance, this will compete with your cordless grinders.  Now I am not saying this will replace your corded grinder, but it’s a huge step forward in the right direction.