The M18 FUEL™ 4-1/2" / 5" Grinder generates 11A corded power allowing you to complete the toughest grinding and cutting applications, all on the M18™ Cordless System. The M18 FUEL™ 4-1/2" / 5" Grinder includes an electronic clutch for kickback protection, as well as overload protection to maximize motor life.
I'm a small engine technician and have gone through about 4 Milwaukee M12 battery powered units over the years. I've tried several different brands but Milwaukee has been the most reliable. And you thought they just made beer. I decided to try the 18 volt to use for sharpened lawn mower blades. It does a perfect job, customers are impressed. Great unit so far. You can't go wrong with Milwaukee. The seller who sold this was quick and did a good job as expected.
Only used it a couple times so far. Way better than the standard version that it it replacing. Has more power, automatic break is awesome. It is way quieter than the old one, but the old one had a rough life.
Like typical Milwaukee, it didn’t let me down. Everything’s great about this grinder. Didn’t know what size I needed for my shop but the 2880 was plenty. If I would’ve used it every single day I probably would’ve Purchased the next larger one. 
This was a great buy and very happy with the quality of the tool. I love the brake feature as you don’t have to worry when you’re done grinding. The tool has good power and the battery goes for quite a while.
this new grinder is full of power. already have Milwaukee 18v grinder and its a great tool when I fired this new fuel grinder is almost scared me. you will not be disappointed
My early experience with this tool is good. I have not used it enough to have an idea about how good it will be with battery life. That is the only reservation I have. Very happy with the way it performs so far.