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DeWALT DCG405N

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Lightweight battery-powered angle grinder with high-tech, overload-resistant brushless motor. It is positioned as a product of the upper price category, focused on professional use. Designed for dry cutting and grinding work on metals (steels, non-ferrous metals and their alloys), natural and artificial stone, concrete, ceramic tiles, wood and composite materials based on it, as well as on solid polymer masses. In addition, it can become a reliable mobile assistant in medium-intensity demolition work. Uses cutting/grinding discs with a diameter of 125 mm with a bore of 22.2 mm or wire brushes with a diameter of 75 mm as equipment. The weight of the DeWALT DCG405N angle grinder with a battery is only 1.74 kg, and the rubberized grip surface and modest overall dimensions help to avoid premat...ure operator fatigue. Powerful 800W brushless motor spins rigs up to 9000rpm for fast processing. An effective engine brake and a start blocking system are provided when the battery is connected. DeWALT 18V XR batteries and charger are not included and must be purchased separately.
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DeWALT DCG405N
XRmotor protectionkickback protectionno battery
batt. 2
5 Ah
case / batt. 1
5 Ah
case / batt. 2
4 Ah
case / batt. 2
5 Ah
case / batt. 3
5 Ah
case / batt. no
batt. no
Main
Typeangle grinder
Power sourcebattery
Specs
Rotation speed9000 rpm
Max. disc diameter125 mm
Protective functions
Electronic motor protection
Motor brake
Kickback protectionmechanical
Additional features
Featuresbrushless motor
In boxadditional handle
without charger
Battery
Battery in setis absent
Battery platformDeWALT 18V XR
Battery voltage18 В
Compatible batteriesDCB180, DCB181, DCB182, DCB183, DCB184, DCB185, DCB187, DCB189, DCB546
General
Noise level96 dB
Weight1.74 kg
Added to E-CatalogMarch 2018
Model DCG405N comes without a case, while model DCG405NT comes with a case.

Lightweight battery-powered angle grinder with high-tech, overload-resistant brushless motor. It is positioned as a product of the upper price category, focused on professional use. Designed for dry cutting and grinding work on metals (steels, non-ferrous metals and their alloys), natural and artificial stone, concrete, ceramic tiles, wood and composite materials based on it, as well as on solid polymer masses.

In addition, it can become a reliable mobile assistant in medium-intensity demolition work. Uses cutting/grinding discs with a diameter of 125 mm with a bore of 22.2 mm or wire brushes with a diameter of 75 mm as equipment. The weight of the DeWALT DCG405N angle grinder with a battery is only 1.74 kg, and the rubberized grip surface and modest overall dimensions help to avoid premature operator fatigue. Powerful 800W brushless motor spins rigs up to 9000rpm for fast processing. An effective engine brake and a start blocking system are provided when the battery is connected. DeWALT 18V XR batteries and charger are not included and must be purchased separately.

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog DeWALT 2026 - new arrivals, bestsellers, and the most relevant models DeWALT.
How to choose an angle grinderBrief instructions for choosing a grinder
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Series DeWALT XR (cordless)
Model overview based on user reviews  
The DeWALT DCG405N is a highly regarded angle grinder, praised for its power, comfortable grip, and compactness. Users appreciate its quality materials and find it to be a great helper for working with metal, concrete, and tiles. It is particularly beneficial for those who already own DeWALT cordless equipment, as it fits seamlessly into the existing setup. While it lacks speed control, which might be necessary for delicate work, it excels in tasks requiring a reliable and powerful tool. The grinder is simple, convenient, and can be operated one-handed, saving time and effort. However, it does not include a basic strap or attachment point for safety, which could be a concern for preventing falls. Overall, it is an excellent auxiliary tool for small jobs, especially where using an extension cord is inconvenient.
Pros

Cons

User reviews 2
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great model, love it
3 August 2020 
I finally bought a DeWALT DCG405N 6B90D, this device. I bought it for a variety of jobs, to sharpen it little by little, to cut off a couple of fittings, to quickly sand small areas, to correct tiles, to easily saw off a 50mm steel angle with a 2A battery. A gufchem for small jobs, for which unwinding the extension cord turns into great difficulties. Using it fully as an ordinary grinder is stupid, the tool is exclusively an auxiliary tool for the network tool.
The tool is simple, convenient and one-handed. Saves a lot of time and effort.
There is no basic strap or hole where you can attach the device to the foxes. Let's say protecting a fall from a height or crooked hands.
Ramil: use DeWALT DCG405N less than month
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An excellent choice if you already have DeWALT cordless equipment and suitable a
6 February 2025 
I have been using it for several months now, it is a great helper for working with metal, concrete and tiles. As a professional, I often encounter tasks where a reliable and powerful angle grinder is needed, and this model has met my expectations.
Power, comfortable grip, compactness, quality materials
no speed control, but that's for delicate work)
Elnur: 
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Grinder / Polisher DeWALT DCG405N