STANLEY FATMAX SFMCD721D2K-QW Review

There is a moment in every DIY project when you realise that being tethered to a power socket is holding you back. Maybe you are up a ladder fixing a gutter bracket, working at the far end of the garden on a shed, or drilling into a wall in a room where the nearest outlet is three metres behind a stack of furniture. A cordless impact drill solves all of these problems at once. No extension leads to trip over, no hunting for an outlet, and no compromising on where you can work. Modern battery technology has closed the performance gap with corded drills dramatically — today's 18-volt brushless motors deliver torque figures that would have been unthinkable from a battery tool a decade ago, easily driving large screws, boring through thick timber, and punching holes in brick and concrete. The best cordless impact drills now come with two batteries and a fast charger, so you can keep one battery on charge while the other is in the tool, giving you essentially unlimited runtime for all but the most demanding all-day tasks. For anyone who wants genuine freedom of movement without sacrificing power, a quality cordless impact drill is no longer a luxury — it is the sensible choice.

When choosing a cordless impact drill, torque is the number that matters most. Measured in newton-metres (Nm), torque tells you how much twisting force the drill can apply — higher numbers mean the drill can drive larger screws into tougher materials without stalling. For general household use, 30-50 Nm is adequate; for serious DIY and trade work, look for 60 Nm and above. Battery voltage is the next factor: most modern cordless drills use 18 V or 20 V platforms, which strike the best balance between power and weight. Brushless motors are now the standard worth paying extra for — they are more efficient, run cooler, last longer, and extract more work from each battery charge compared to traditional brushed motors. A two-speed gearbox is another feature to prioritise: low gear (around 0-600 rpm) gives you control and torque for driving screws, while high gear (up to 2,000+ rpm) is for fast drilling. Finally, check what comes in the box — a kit with two batteries, a charger, and a carry case almost always offers better value than buying these items separately.

In this review we examine the Stanley FATMAX V20 cordless impact drill, a brushless 18-volt model that claims an impressive 80 Nm of torque. We cover its real-world drilling and screwdriving performance, battery life with the included 2.0 Ah packs, the two-speed gearbox and 15 torque settings, build quality and ergonomics, and how it stacks up against competitors in the same price bracket. If you are upgrading from an older cordless drill or buying your first serious battery-powered tool, this review will give you the information you need to make an informed decision.

The Stanley FATMAX SFMCD721D2K-QW is built around an 18-volt brushless motor that delivers up to 80 Nm of maximum torque — a genuinely high figure that puts it near the top of its class. The brushless design means the motor runs more efficiently than a traditional brushed equivalent, generating less heat and converting more of the battery's energy into useful work. Rotational speed is controlled through a two-speed gearbox: low gear runs from 0 to 600 rpm for high-torque screwdriving and precision tasks, while high gear spins from 0 to 2,100 rpm for fast drilling through wood, metal, and plastic. In impact mode, the drill delivers up to 35,700 blows per minute, enough to punch through brick, blockwork, and light concrete. The keyless 13 mm chuck handles bits from small pilot drills up to large hole saws and auger bits, and it is designed for one-handed tightening — a practical touch when your other hand is holding the workpiece.

Stanley FATMAX has equipped this drill with 15 adjustable torque settings plus a dedicated drill and hammer drill mode, selected via a rotating collar behind the chuck. The torque clutch disengages the drive at your chosen setting, which prevents over-driving screws and stripping screw heads — essential when working with softer materials like plasterboard or when driving delicate brass screws into hardwood. The clutch action is consistent and repeatable across settings, so once you have found the right number for a given screw and material combination, you can trust it to deliver the same result every time. An integrated LED work light sits just above the trigger and illuminates the drilling area, which is invaluable when you are working in poorly lit corners, inside cabinets, or under staircases. The drill body is built around a metal gear housing for durability, while the handle is wrapped in a soft rubber overmould for comfort and grip.

At 3.8 kg with a battery fitted, the FATMAX is on the heavier side for a cordless drill — you will notice the weight during extended overhead work. However, that weight is a direct consequence of the robust metal construction and the powerful motor, and for most waist-height and downward drilling it actually helps the tool feel planted and stable. The two-speed gearbox switch is easy to reach with your thumb while holding the drill in a natural grip, and the forward-reverse selector is placed just above the trigger for quick one-handed direction changes. Battery changes are tool-free: press the release buttons on either side of the battery pack and slide it off. Each 2.0 Ah battery has a built-in charge level indicator — press the button and LEDs show you roughly how much runtime remains.

The kit includes two 18-volt 2.0 Ah lithium-ion batteries and a charger, which means you can keep one battery on charge while using the other — effectively giving you continuous runtime for all but the most demanding applications. The batteries use lithium-ion technology with minimal self-discharge and no memory effect, so you can top them up at any charge level without degrading their capacity over time. The charger is compact and plugs directly into a standard mains socket. A moulded plastic carry case is also included, with compartments for the drill, both batteries, the charger, and a selection of bits and accessories. As part of the Stanley FATMAX V20 platform, these batteries are interchangeable with over a dozen other tools in the range — circular saws, angle grinders, reciprocating saws, and more — which is a compelling reason to invest in the ecosystem if you plan to expand your cordless tool collection.

The drill measures 34.6 × 10.7 × 34.0 cm and weighs 3.8 kg with a battery — compact enough to fit into standard tool bags and cases. It is manufactured in the USA and backed by Stanley's warranty; check with your retailer for the specific duration and terms available in your region. With 4.5 out of 5 stars from 479 customer reviews, the FATMAX enjoys strong approval from real-world users. It also holds a #110 ranking in Drill Drivers and sits at #11,014 overall in DIY & Tools on Amazon, reflecting steady popularity in a highly competitive category. Priced at €133.37, this kit — drill, two batteries, charger, and case — represents a complete cordless drilling solution for anyone who needs high torque and the freedom of battery power in a single purchase.

The Stanley FATMAX V20 cordless impact drill is built for serious DIYers and tradespeople who need high torque, cordless freedom, and the ability to drill through masonry, wood, and metal without switching tools — all backed by a growing ecosystem of interchangeable V20 batteries.