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Stanley FatMax V20 18V Cordless Brushless Impact Driver 1 x 4.0Ah

4.9 (71 reviews)
SKU: 240305085403016 EAN: 5035048742822

Compare 2 prices for Stanley FatMax V20 18V Cordless Brushless Impact Driver 1 x 4.0Ah — from £127.98 to £143.98 across 2 UK sellers including Toolstation, Machine Mart. Save up to £16.00 (11%).

£127.98 11h ago
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Compare Prices from 2 Sellers

Prices updated 17 Apr 2026
2
Machine Mart
£143.98 +£16.00
11h
#2 Machine Mart
11h ago
£143.98 +£16.00
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The STANLEY FATMAX V20 18V Brushless Impact Driver features advanced motor technology for increased power efficiency and longer runtime. Its high-performance transmission delivers up to 2,800 RPM for fast, heavy-duty driving on demanding job sites. This kit includes a pro-grade 4.0Ah battery with an integrated state-of-charge indicator and a fast charger.
Auxiliary Handle No
Battery Capacity 4.0Ah
Battery Included Yes
Battery System Stanley FatMax V20
Battery Technology Lithium-Ion (Li-Ion)
Brand Stanley
California Prop 65 Warning Unknown
Charging Time 120 min
Chuck Size 6.35mm
Chuck Type Hex
Color Yellow/Black
Colour Yellow/Black
Country/Region of Manufacture Unknown
Features Brushless Motor, LED Light, Variable Speed, Compact Design
Impact Rate 3,500 BPM
Manufacturer Warranty 1 Year (3 Years with registration)
Maximum Torque 170Nm
Model FatMax V20
Motor Type Brushless
MPN SFMCF810M1
Number of Batteries 1
Number of Items in Set 4
Power 18V
Power Source Battery
Set Includes Impact Driver, Battery, Charger, Case
Size Compact
Speed 2800 RPM
Type Impact Driver
Unit Quantity 1
Unit Type Unit
Voltage 18V
Brushless motor technology for enhanced performance and efficiency
Powerful motor delivering up to 170Nm of torque for heavy duty fastening
High-speed transmission providing 2,800 RPM and 3,500 BPM
Quick release hex chuck for easy one-handed bit changes
Integral LED work-light for improved visibility in dark areas
V20 Lithium-ion battery with no memory effect and minimal self-discharge
1 x Stanley FatMax V20 Brushless Impact Driver
1 x 4.0Ah V20 Lithium-Ion Battery
1 x 2A Fast Charger
1 x Kit Box / Carry Case
Stanley Black & Decker, Inc. (DEWALT brand)
Website

DEWALT is a professional power tool and accessories brand operated by Stanley Black & Decker, serving construction, industrial, and demanding DIY users with cordless platforms, jobsite solutions, and storage systems.

UK Contact

+44 (0) 17532 60094

Product Range

Cordless and corded power tools, hand tools, accessories, batteries/chargers, outdoor power equipment, storage, fasteners/anchors, and jobsite systems (e.g., XR, FLEXVOLT, TOUGHSYSTEM, TSTAK).

Customer Reviews 71

4.9
71 reviews
5 star
64
4 star
5
3 star
1
2 star
0
1 star
1
Good product.
5.0
February 2, 2026
HandyAndy59 Verified Purchase

Does the job, drives screws in and out effortlessly.

Lightweight and solid powertool
5.0
April 14, 2025
a2c65657-d89b-52f4-98ee-d9b67eeddf89 Verified Purchase

The Stanley FatMax V20 18V Cordless Brushless Impact Driver is powerful and efficient, featuring a brushless motor that enhances torque and runtime. Nice design, compact and lightweight. Adjustable speed settings accommodate various tasks. Responsive trigger and an LED work light for visibility. Long lasting battery and power indicator. This Stanley FatMax V20 is a reliable choice for both professionals and DIY enthusiasts.

Fat max impact driver
5.0
March 9, 2025
Multi Trade Plus Verified Purchase

Great tool I use it all the time as a screwdriver and for the hard to remove screws etc

Good impact driver
5.0
February 18, 2025
andrewst7 Verified Purchase

Purchased on sale, and glad I did. Works well to drive screws, and unscrew those stuck. The large battery helps performance, and only had to recharge once so far

Solid performance.
5.0
December 20, 2024
scottrkirk Verified Purchase

Solid performance. Battery life excellent. Bought to repair floor boards and sheet plywood for LVT install. Powerful enough to drive 5” screws straight into the joists.

Great price and quality
5.0
December 18, 2024
Varga Verified Purchase

Great price and excellent build quality for the price

Stanley fat max cordless impact drill
5.0
December 6, 2024
PaddyTheBaddy Verified Purchase

Couldn't be happier. Perfect choice. I can also use with other fat max power tools.

What a fantastic purchase 😊
5.0
November 20, 2024
Neil P99 Verified Purchase

I purchased this impact driver on offer. Absolutely fantastic.

A solid little impact driver.
5.0
November 19, 2024
Paul Burns Verified Purchase

A solid little impact driver. My old driver packed up and I retire soon so I wanted something to see me out, this has more than done the job it packs a punch and seems reliable. Would recommend.

Great Impact
5.0
November 15, 2024
MaCoDIY Verified Purchase

Properly impressed. Light yet powerful and with the 4.0 Ah battery long lasting driving without the need to recharge until the end of major jobs.

Great for DIY… not professional but doesn’t need to be. Wide range of alternative tools for the DIY enthusiasts available.
4.0
November 14, 2024
BGM Joinery Verified Purchase

Definitely not kitted out for a tradesman. Doesn’t quite have the power / torque needed for someone day in day out. However, for the DIY enthusiasts… this thing will more than be capable of nearly all tasks.
Along with the fact that it was priced on offer with the wider tool range priced to not break the bank. 4*

Great value
5.0
November 14, 2024
Andrew c 90 Verified Purchase

Brilliant tool wish i got one sooner great for the price

Buy me.
5.0
November 14, 2024
J Milner Verified Purchase

Excellent value for money well balanced machine .

Great piece of kit
5.0
November 13, 2024
Walton754 Verified Purchase

Great peice of kit, does exactly what is expected of it.

Great piece of kit
5.0
November 12, 2024
ATTTTT Verified Purchase

Excellent value for money, love the brand, works fantastically.

Perfect tool at a Perfect price!
5.0
November 12, 2024
Schooee Verified Purchase

Found this at a greatly discounted price at Tool station on a promotion. Although I had difficulty ordering it on line, (a website issue resolved by a quick trip to my local store sorted it there and then.Thanks Stu@Evesham).
Now I'm the proud owner of an impact driver that will come in handy. Online reviews & a THREE YEAR warranty swayed my decision to get it .
It shows the manufacturer's confidence in their product when they offer extended warranties! Glad I did as it's gone back UP to £149.98.

Does the job.
5.0
November 11, 2024
M at home Verified Purchase

So far, so good. Only used it on a couple of woodscrews that I hadn't been able to drive in, and a rusted screw that wouldn't come out otherwise. 100% success so far.

Compact, light weight and reliable
5.0
November 11, 2024
Yuan Verified Purchase

The battery is much lighter than I expected. And I really like the big green light on the charger, it looks really cool and much visible comparing to Ryobi charger.

Emergency purchase proved better than expected
5.0
November 10, 2024
Bobk Verified Purchase

I needed a new impact driver and having searched the offers I found this one at a great price. Having now used it with 100mm screws into solid timber it more than justifies it's purchase. It performs as well as my previous high end machine with great battery life and it's quite light to handle.

Great tool
5.0
November 9, 2024
Stokesy65 Verified Purchase

Bought at a great price and really surprised at how good the quality is!

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