Angle Grinder - Cordless - 4 1/2" - 20 V

This Dewalt DCG412B grinder is equipped with a powerful motor, ideal for cutting and grinding applications. It features Quick-Change(TM) wheel release, which allows for tool free wheel changes without the need for a wrench, as well as a tool-free adjustable cutting guard, which allows for quick repositioning. A two-position side handle puts control and comfort into your hands.Three-year limited warranty. Battery and charger sold separately.

Battery Type :Lithium-ion 20V Max (not included)
Revolutions per Minute :7,000 RPM (No Load)
Disc Diameter :4 1/2 in
Warranty :90 day money back guarantee, 1 year free service contract, 3-year limited warranty
Power Source :Battery
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Angle Grinder - Cordless - 4 1/2" - 20 V is rated 4.6 out of 5 by 69.
Rated 5 out of 5 by from Works well but a real battery hog. Used this to grind off some epoxy concrete crack sealant. I had two of the smaller DeWalt 20 volt batteries from previous DeWalt cordless purchases. This tool eats up the charges way faster than the others. I could not keep up with one charger and two batteries. Just yesterday, I received my order for a 2-pack of the larger DeWalt 20 volt batteries. That should solve my DIY needs. However, a contractor with serious, prolonged, grinding needs might want to look at the corded model.
Date published: 2014-03-04
Rated 4 out of 5 by from A nice addition to my 20V max tool collection I already have a DeWalt 20V max drill and 1/4 inch driver set and recently got two additional 3.0Ah batteries so I decided to look for additional tools based on that battery system. I also have 2 DeWalt angle grinders, but they are corded and I wanted something I could grab and use quickly without the hassle of pulling power cords out. This was the perfect answer to all those requirements. Although it isn't as strong or as fast (rpm) as the corded grinders it works great for small jobs.
Date published: 2016-11-07
Rated 5 out of 5 by from Great tool ! I use this grinder for sharpening large, heavy blades on farm equipment. Great designed tool.
Date published: 2016-11-10
Rated 5 out of 5 by from I got this free with a driver/hammer drill combo I bought. I already owned a corded angle grinder I bought just a few months before so I didn't really need it. With that said, I now used this for any grinding I have overhead as it's easier without a cord. Though I sill rather used the corded grinder when I'm cutting anything downward for longer periods of time. I really don't notice a difference between the two since I'm a DIY'er and not a pro, so my use has been limited to my home renovation where I've gutted my 2nd floor to add a 2nd bathroom and redo the flooring. The nice thing about this tool is it came with a decent metal grinding disc. Though I wish it came with a case like my corded grinder.
Date published: 2017-12-01
Rated 5 out of 5 by from Great Grinder Grinder performs great. To get the most out of it, if used in heavy duty grinding though, you need a 4 amp battery. Great tool. Performs well.
Date published: 2017-04-29
Rated 3 out of 5 by from Dewalt 20v grinder Wished I would have done more research on this product. I absolutely love dewalt, growing up as a child watching my father and grandfather work I knew dewalt was and still is the most professional, most reliable battery powered equipment. I own many dewalt 18 and now 20v Li power tools. Heck I even tossed the echo weed trimmer for the dewalt 20v brushless. So the problems I had with the 20v grinder is simple. It eats batteries. A 5aH battery will net you about 5 mins tops for grinding. A 1.5aH battery last about 2mins. I have 2 chargers in my shop so I didn’t see this as much of a problem till I realized the battery’s where too hot to charge after use. It takes about 15-20 mins for the batteries to cool down and take a charge. My second problem was the arbor shaft on mine was either out of balance or bent. Using a grinding wheel it would bounce a lot. And yes, it was installed correctly. I even changed out the grinding nuts with others to try and isolate the troubles. A cut off disc wouldn’t work either because of the vibration it would bounce around. I really wanted to like this as this is actually a 5” grinder. For bigger jobs I use a 7” 3m cubitron 2 disc and when they wear down I save them. Luck would have it the wheels would fit it. After day one with all the problems I took it back to Lowe’s and got the 4-1/2 dewalt brushless and man is it worth the extra $40. I can get nearly 20 minutes of continuous grinding. Dewalt makes great tools. But if unless you are a hobbiest I would go with the better XR brushless. Hope this helps.
Date published: 2018-01-15
Rated 1 out of 5 by from Do not buy Don't buy this piece if junk!!! I am a dewalt fan by any measure , but this is junk! It gobbles batteries. I could not keep up with three batteries and two chargers. The amp draw is so high that it fried two of my batteries. One was an older battery but the other one was new ( three months old). Last warning DO NOT BUY!!! [This review was collected as part of a promotion.]
Date published: 2017-12-27
Rated 5 out of 5 by from Amazing Product I bought this grinder just to add it to my tools but end up using it several times during a remodeling and I must say for a battery operated tool it works perfect.
Date published: 2013-04-07
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