DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, Paddle Switch, 4-1/2-Inch to 5-Inch, Tool Only (DCG416B)

I've been using DEWALT tools for years, and the FLEXVOLT ADVANTAGE 20V MAX Angle Grinder (DCG416B) is another top-tier addition to my collection. This grinder is a beast — the power it delivers, especially when paired with a FLEXVOLT battery, is impressive and makes a noticeable difference compared to standard 20V tools.The paddle switch is responsive and feels secure in the hand, and the tool itself is well-balanced, making it easier to control during longer jobs. I use it for cutting, grinding, and surface prep, and it handles everything I throw at it with ease.Build quality is exactly what you'd expect from DEWALT: solid, rugged, and built to last. Even under heavy use, it stays cool and performs consistently.If you're already invested in DEWALT's battery platform, this is a no-brainer. A reliable, powerful grinder that gets the job done right every time.

This is my first angle grinder, so I am not writing with a lot of experience. Others have described the product well, so I will focus on the things I was uncertain of or confused about when buying it or starting to use it. Experienced users will probably not find this very helpful. I was planning to buy the DCG413, but this grinder (DCG416) was less expensive, even while seeming to be a higher spec product. It is, and I’m still not sure why this is less expensive, but I am happy to have it. Still, here are the questions I had, and the answers.First, will that Flex Advantage really make a difference if I use a Flexvolt battery. Yes, I have one 6 Ah Flexvolt battery and two 5 Ah standard 20v batteries and I have been using this with a cement grinding wheel to prepare a basement floor for tiling. (Tip: use the Dewalt dust shroud if you are doing that… really!) Anyway, not only is the tool noticeably more powerful with the Flexvolt, that 6 Ah battery lasts longer than both of the 20v 5 Ah batteries combined. Further, the Flexvolt battery is only mildly warm when run out, and charges immediately after use, while the 20v 5 Ah batteries are quite hot to the touch and the charger delays charging them while they cool down. I don’t know for sure, but my guess is that the 413 would have been a lot like this with the regular batteries.How long do the batteries last? Not long. Although the Flexvolt does much better than the regular 20v, I still probably only get about 200 sqft (about an hour or so) out of all three combined. For such continuous use, you could potentially find yourself frustrated by frequent charges unless you have 6-8 batteries that you could rotate (or 4 Flexvolt). I don’t mind because this is DIY work for me and I am happy to take the break and give my back a rest.What’s this 4 1/2” to 5” thing… which is it? Apparently, they have decided that this is powerful enough to run 5” discs and it comes with a 5” Type 27 guard, so you can run either 4 1/2” or 5” discs as you choose. Since there are many, many more 4 1/2” options, that’s what I’ve been running. Anyway, it’s all good. You have more options than with the DCG413.What’s all this about 5/8” or 7/8” arbor size. Which one is this? It took me a while, but I finally found the answer, which is both. The actual arbor is 5/8” so you can use those discs, but the backing flange includes an adaptor for a 7/8” wheel. Don’t stress about it, you can use either.A few other impressions… it takes a while to get used to using this tool. Don’t expect to be an expert from the start. It’s a powerful, and potentially dangerous tool. Be sure to watch some videos on how to use it safely. It really is important that you understand the physics of a spinning wheel, what part of the wheel to use, etc. The paddle switch is a bit awkward, but I’ll get used to it. The other option is a thumb switch on some other models, but I wouldn’t want that on a battery operated tool. I have to move around a lot, and I believe I am extending my battery life by not having it running while I move. If I had a corded model, I might prefer the thumb switch.This would be old news to experienced users, but I am in awe of the power of this thing. The closest thing I’ve come to what I am doing with this currently is an orbital sander (in the sense that I am scuffing up the cement floor so it will bind well with the thinset, like I do with a sander on wood before painting) and that sander is hugely forgiving next to this. If I set it down at an angle, it will gouge the floor. If I’m sloppy in lifting it up, it will gouge the floor. I always thought of cement as hard, but this tool really goes through it.Now I’m thinking of all the other things I can do with this that I could never do before. While I bought this for this one task, I am already seeing a lot of other uses for more traditional angle grinder tasks. This is a good choice for a DIY homeowner.

This is a very strong grinder. We have a few dewalt batteries already so this was definitely a good price point. I've used it about six or seven times in about a week and the batteries hold up perfectly.

The DEWALT FLEXVOLT 20V MAX Angle Grinder (DCG416B) delivers unmatched performance! Its FLEXVOLT compatibility ensures extended runtime, while the paddle switch adds safety and control. Lightweight yet rugged, it handles 5" grinding/cutting effortlessly. Perfect balance and zero vibration—ideal for professionals. A must-have for heavy-duty tasks!

"Built to last generations! Survived accidental drops without scratches. Weather-resistant materials stay pristine. Investment that keeps giving. Far surpasses cheaper alternatives. 10/10 durability!"

I am a big fan of DeWalt tools and love the DeWalt grinder as I work for uhaul and sometimes people loose keys and need locks cut off and I also have a handyman business so this will come in handy

This DEWALT grinder delivers unmatched performance! Effortless cutting, smooth paddle control, and impressive battery life. Durable build, perfect balance—exceeds expectations. A must-have for pros!★★★★★

smooth operation, and is suitable for quickly removing minor scratches and blemishes. The effect is very professional and makes the car paint look brand new. I highly recommend it!