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expiredBinar posted Apr 20, 2021 05:08 AM
expiredBinar posted Apr 20, 2021 05:08 AM

DeWalt 20V MAX Flexvolt Advantage 4.5" to 5" Paddle Switch Angle Grinder (Tool Only)

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$137

$199

31% off
Amazon
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JBTools via Amazon has DeWalt 20V MAX Flexvolt Advantage Brushless 4-1/2" to 5" Paddle Switch Angle Grinder (DCG416B, Tool Only) on sale for $136.99. Shipping is free.

Thanks to community member Binar for finding this deal.

Note: In stock on April 27, 2021.

Editor's Notes

Written by oceanlake
  • About this deal:
    • Our research indicates that this DeWalt 20V MAX Brushless 4-1/2" to 5" Paddle Switch Angle Grinder is $12.91 lower than the next best available price from a reputable merchant with prices starting at $149.90 at the time of this posting.
  • About this product:
    • This tool has received an average rating of 4.8 stars out of 5 based on over 100 Amazon customer reviews.
    • See full specs at the DeWalt product page.
  • About this store:

Original Post

Written by Binar
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
JBTools via Amazon has DeWalt 20V MAX Flexvolt Advantage Brushless 4-1/2" to 5" Paddle Switch Angle Grinder (DCG416B, Tool Only) on sale for $136.99. Shipping is free.

Thanks to community member Binar for finding this deal.

Note: In stock on April 27, 2021.

Editor's Notes

Written by oceanlake
  • About this deal:
    • Our research indicates that this DeWalt 20V MAX Brushless 4-1/2" to 5" Paddle Switch Angle Grinder is $12.91 lower than the next best available price from a reputable merchant with prices starting at $149.90 at the time of this posting.
  • About this product:
    • This tool has received an average rating of 4.8 stars out of 5 based on over 100 Amazon customer reviews.
    • See full specs at the DeWalt product page.
  • About this store:

Original Post

Written by Binar

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+22
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Model: DEWALT 20V MAX FLEXVOLT Advantage Grinder

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Sort: Lowest to Highest | Last Updated 5/14/2026, 12:53 AM
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Top Comments

GTPquickRB
269 Posts
79 Reputation
So, Flexvolt nomenclature is kinda screwy.

Flexvolt is more about the battery and DeWalt is taking liberties to confuse us proles. A 9ah battery is 9ah at 20v or 3ah at 60v. Math.

A 60v "Flexvolt" tool utilizes the Flexvolt 60/20v battery to run it at 60v. You cannot use a 20v battery.
A 20v "Flexvolt Advantage" utilizes the Flexvolt 60/20v battery to run it at 30ish volts or a regular battery at 20v
A 20v XR or brushed utilizes the Flexvolt 60/20v battery to run it at 20v for increased runtimes, or a regular battery at whatever.

Someone correct me if I'm wrong, but for a little bit "Flexvolt" could be bought at HD but not Lowes, and the "Flexvolt Advantage" was at Lowes but not HD. Not sure if thats still the case as I haven't added to my blackandyellow collection for a while, but as an owner of a "Flexvolt Advantage" drill I haven't noticed any huge power gains when using a bigger battery, the drill just weights more all the time.

For a DIYer this grinder is probably perfect. Maybe even overkill. The stock 20V brushless grinder is plenty. I've run mine on thicker stainless and 1/4" mild steel plate with zero issue. Takes down a padlock in seconds. A 4.5" grinder discs will do pretty much anything you need within reason, and the guard is set up for it. A guard that can also take 5" is either oversized for the 4.5 or under for the 5. So safety. Anytime you add a bigger dangerous spinny thing to something you don't use frequently, I question is the potential damages worth the extra half inch?

If you're a pro and the 6" is important to you then yes, get the full 60v Grinder (I know nothing of its finer features) but again, if it will run 4.5-6" discs, whats that blade guard dimension?

And as always: eye(better yet face), ear, AND HAND protection with these things if you're new to them. I'd be missing a good chunk of index finger if it wasn't for some decent gloves, and that was with a 40 grit sanding disc, a blade would have been worse. Always plan for something wrong to happen with these. Discs are somewhat of a fragile item too fyi. The resins breakdown over time and make compromise really old discs.

Best of luck.
koreanbeefcake
881 Posts
86 Reputation
I had a grinding wheel break causing the tool to 180 in the air and land on my hand near the index finger. Was not wearing gloves. Ended up in the ER and my hand has never been the same. Wear gloves please.

Also, the trigger on these is much easier to feather then those giant ON/OFF switches.
Binar
19076 Posts
4622 Reputation
I honestly think his comment is common sense. Work place accidents do happen and protective gear helps minimize the injuries. He was just trying to be helpful imo

45 Comments

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Apr 20, 2021 03:51 PM
189 Posts
Joined Jan 2008
bigchipApr 20, 2021 03:51 PM
189 Posts
Quote from EddyK3786 :
Don't forget to wear a helmet while driving a car because there are higher chances of being in a car accident then having an angle grinder flying in the air and landing on you hand.
lol imagine coming in this thread just to advocate for not wearing gloves while using an angle grinder?
1
Apr 20, 2021 03:56 PM
1,410 Posts
Joined Feb 2012
AlexizupinheaApr 20, 2021 03:56 PM
1,410 Posts
The title change is wrong. Should update to say "Flexvolt Advantage" which is very different than just "Flexvolt"
Apr 20, 2021 03:59 PM
889 Posts
Joined Dec 2008
PromitApr 20, 2021 03:59 PM
889 Posts
I am not one of those dudes who owns nine grinders and has been using them for all my work for sixty five years. But I picked this up last year and for the relatively simple work that I have been doing, I've been impressed with this grinder. It does consume batteries, so you'll want 6/8/9/12 Ah batteries on hand if you're really planning to put it to work.
Apr 20, 2021 04:01 PM
2,759 Posts
Joined Apr 2014
ScoreracingApr 20, 2021 04:01 PM
2,759 Posts
Quote from koreanbeefcake :
I had a grinding wheel break causing the tool to 180 in the air and land on my hand near the index finger. Was not wearing gloves. Ended up in the ER and my hand has never been the same. Wear gloves please.

Also, the trigger on these is much easier to feather then those giant ON/OFF switches.
What brand of gloves? Like Mechanix impact ones with the rubber on top of glove or leather gloves? Maybe welder gloves although might be awkward to work with.
Apr 20, 2021 04:04 PM
45 Posts
Joined Jan 2010
KingBDSApr 20, 2021 04:04 PM
45 Posts
Repped. Thanks. And to make it even better, it's not charging tax.
1
Original Poster
Apr 20, 2021 04:04 PM
19,076 Posts
Joined Feb 2010
Binar
Original Poster
Apr 20, 2021 04:04 PM
19,076 Posts
Quote from GTPquickRB :

If you're a pro and the 6" is important to you then yes, get the full 60v Grinder (I know nothing of its finer features) but again, if it will run 4.5-6" discs, whats that blade guard dimension?
That one comes with 2 guards ..one 6 inch and one 4.5 inch

If you really want the 60 v one here is a great deal..the reason it doent have a box is they buy them in bulk as contractors.
https://www.ebay.com/itm/Dewalt-D...3263501356
Apr 20, 2021 04:04 PM
3 Posts
Joined Oct 2017
absentblueApr 20, 2021 04:04 PM
3 Posts
Quote from Scoreracing :
What brand of gloves? Like Mechanix impact ones with the rubber on top of glove or leather gloves? Maybe welder gloves although might be awkward to work with.
Project Farm did a video on gloves and Milwaukee makes a pair that seems like it would be offer good protection here.
1

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Original Poster
Apr 20, 2021 04:09 PM
19,076 Posts
Joined Feb 2010
Binar
Original Poster
Apr 20, 2021 04:09 PM
19,076 Posts
Quote from absentblue :
Project Farm did a video on gloves and Milwaukee makes a pair that seems like it would be offer good protection here.
I use this for welding and grinding ( they are 35 from 3rd party , free shipping (
https://www.amazon.com/gp/aw/d/B004NWFXKS
Apr 20, 2021 04:15 PM
1,202 Posts
Joined Jan 2011
hulksweiderApr 20, 2021 04:15 PM
1,202 Posts
I don't use an angle grinder very often - but I will stick with my corded Dewalt - the prices for tools without batteries or chargers are ridiculous - in my opinion.
Apr 20, 2021 04:16 PM
513 Posts
Joined Mar 2021
Jenny_CantrolApr 20, 2021 04:16 PM
513 Posts
Quote from siddmon :
Would you recommend this for cutting bike locks?
I'm starting a new business ; )
I've found that the disc is more important than grinder
2
Original Poster
Apr 20, 2021 04:16 PM
19,076 Posts
Joined Feb 2010
Binar
Original Poster
Apr 20, 2021 04:16 PM
19,076 Posts
Quote from hulksweider :
I don't use an angle grinder very often - but I will stick with my corded Dewalt - the prices for tools without batteries or chargers are ridiculous - in my opinion.
There's a makita corded in warehouse . Qualifies for 20% off that expires today which makes it a great deal. If you like corded I'd grab that.
Apr 20, 2021 04:18 PM
2,074 Posts
Joined Sep 2015
davelikesdeals2Apr 20, 2021 04:18 PM
2,074 Posts
Scariest tool of them all

We own DeWalt everything for price/quality ratio being so good but yeah a grinder is not one of them as of yet.. look at hospital visits per tool in the past 5 years.

With that said...

We have very large estate properties here with very very very long fence lines and anyways my neighbor wanted to DIY part of it to speed up the process to replace an old chainlink fence with a proper fence.. there are metal ties they use that aren't that thin really and anyways he used this and was able to tap each one, cutting through like butter super fast.

With me, I would be out there in medieval armor but he had literally no safety gear at all. I suggest everyone meet in the middle at least.. have eye protection, if you can wear a work apron and fill it with flat whatever so if the disk does break it doesnt go into you and yes you can wear gloves with this one (some tools its a big no no to wear gloves).


Anyways, nice find!
Apr 20, 2021 04:19 PM
1,756 Posts
Joined Feb 2015
kherbinoskieApr 20, 2021 04:19 PM
1,756 Posts
Quote from GTPquickRB :
So, Flexvolt nomenclature is kinda screwy.

Flexvolt is more about the battery and DeWalt is taking liberties to confuse us proles. A 9ah battery is 9ah at 20v or 3ah at 60v. Math.

A 60v "Flexvolt" tool utilizes the Flexvolt 60/20v battery to run it at 60v. You cannot use a 20v battery.
A 20v "Flexvolt Advantage" utilizes the Flexvolt 60/20v battery to run it at 30ish volts or a regular battery at 20v
A 20v XR or brushed utilizes the Flexvolt 60/20v battery to run it at 20v for increased runtimes, or a regular battery at whatever.

Someone correct me if I'm wrong, but for a little bit "Flexvolt" could be bought at HD but not Lowes, and the "Flexvolt Advantage" was at Lowes but not HD. Not sure if thats still the case as I haven't added to my blackandyellow collection for a while, but as an owner of a "Flexvolt Advantage" drill I haven't noticed any huge power gains when using a bigger battery, the drill just weights more all the time.

For a DIYer this grinder is probably perfect. Maybe even overkill. The stock 20V brushless grinder is plenty. I've run mine on thicker stainless and 1/4" mild steel plate with zero issue. Takes down a padlock in seconds. A 4.5" grinder discs will do pretty much anything you need within reason, and the guard is set up for it. A guard that can also take 5" is either oversized for the 4.5 or under for the 5. So safety. Anytime you add a bigger dangerous spinny thing to something you don't use frequently, I question is the potential damages worth the extra half inch?

If you're a pro and the 6" is important to you then yes, get the full 60v Grinder (I know nothing of its finer features) but again, if it will run 4.5-6" discs, whats that blade guard dimension?

And as always: eye(better yet face), ear, AND HAND protection with these things if you're new to them. I'd be missing a good chunk of index finger if it wasn't for some decent gloves, and that was with a 40 grit sanding disc, a blade would have been worse. Always plan for something wrong to happen with these. Discs are somewhat of a fragile item too fyi. The resins breakdown over time and make compromise really old discs.

Best of luck.
"Flexvolt Advantage Tools" runs at 20v not 30v. The "Advantage" moniker is that it can take advantage of batteries big enough that they can maintain good internal resistance. If the "Flexvolt Advantage Tool" senses this, it will continue to draw and maintain high drain usage. Regular none- "Flex Advantage Tools" doesn't have this sensing abilities. They are always programed to protect the battery regardless if the battery is capable or not. A "Flexvolt Advantage Tool" can take advantage of batteries 6Ah or higher and it does not have to be a Flexvolt 20/60 battery. A 20v 8Ah or the new 10Ah can also be taken advantage. Lowe's version is called "Power Detect Tools". Same principle but tests shows that the Home depot's version "Flexvolt Advantage" is a hair more aggressive in taking advantage of big batteries.

"Flexvolt" is the name given for Batteries that can switch to 20v or 60v depending on the tool that's being used. Again, this doesn't magically change the amount of stored energy. Capacity remains the same it just changing the factor e.g. 20v x 9ah = 180wh can transform to 60v x 3ah = 180wh. The 180wh is the total stored energy. A Flexvolt Battery is compatible to both Flexvolt (60v) tools and any regular 20v tools.

"Flexvolt Tools" are tools are 60v only tools. They cannot use non-Flexvolt or AKA 20v batteries.

So here's the ranking by tool power:

Flexvolt Tools > Flexvolt Advantage Tools/Power Detect Tools > XR Brushless Tools > XR Brushed < ?? > Atomic Brushless > 12v Tools

It gets confusing if the Brushed XR is still more powerful then Brushless Atomic.. regardless, they are both below XR tools and Flexvolt Advantage Tools are the most powerful 20v tools.
Last edited by kherbinoskie April 20, 2021 at 09:21 AM.
Apr 20, 2021 04:25 PM
19 Posts
Joined Jul 2013
tnguyen600Apr 20, 2021 04:25 PM
19 Posts
I was originally looking at the 413b model from Home Depot but then this popped up.

Can anyone tell me the difference? I searched online but couldn't find anything and looking at Dewalt's website wasn't helpful.


EDIT: unless the difference is only one being FlexVolt Advantage?

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Apr 20, 2021 04:28 PM
18,249 Posts
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jeff34270
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This user is an Expert in Home & Home Improvement
Apr 20, 2021 04:28 PM
18,249 Posts
Quote from kherbinoskie :
"Flexvolt Tools" are tools are 60v only tools. They cannot use non-Flexvolt or AKA 20v batteries.
That's what's always gotten me about Flexvolt. If it's a flexvolt tool why isn't it flexible about the battery voltage it can use?

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