Full Review ⭐ Qimu 21V Cordless Impact Wrench: 1/2 Brushless Impact Gun, 3-in-1 Power Electric Wrench/Max Torque (420N.m), Drill Set with 6.0Ah Battery&Charger, 4Pcs Sockets, High Torque Impact Wrench for Car Repairs

Impact wrenches are powerful cordless tools that provide high torque for loosening and tightening bolts and nuts, especially in automotive repair applications. They utilize compressed air or batteries to generate rotational impacts that allow them to deliver significantly higher torque than you could achieve with a standard ratchet or wrench. This makes them ideal for tasks like changing tires, brake jobs, exhaust work, and any repairs requiring removal of stuck, overtightened or rusted bolts.

Cordless impact wrenches provide the convenience of battery power without needing to hook up to an air compressor. Top-rated cordless models can deliver impressive torque comparable to air-powered tools. When shopping for a cordless impact wrench, key factors to consider are torque output, battery voltage, build quality, weight, grip and ergonomics.

The Qimu 21V Cordless Impact Wrench is designed to deliver robust fastening and loosening capability thanks to its high-torque brushless motor. With different speed settings and included accessories, it aims to provide versatility for automotive repair and projects around the home.

Overview of the Qimu Impact Wrench

The Qimu 21V Cordless Impact Wrench is a powerful and versatile electric tool designed for automotive repair and maintenance. It features a robust 1/2-inch anvil with a maximum torque of 420 Nm, making it suitable for lug nuts and other stubborn bolts.

This impact wrench has a brushless motor that provides efficient power output and longer runtime compared to brushed motors. It operates on a 21V lithium-ion battery which delivers adequate power for most automotive fastening tasks.

Some key specifications of the Qimu impact wrench include:

• Voltage: 21V
• Max torque: 420 Nm
• Impacts per minute: 2,800 IPM
• Drive size: 1/2-inch
• Weight: 2.2 kg

The tool comes with a 6.0Ah lithium-ion battery that gives decent runtime between charges. It also includes a fast charger and a handy plastic case for storage and transport.

For accessories, the impact wrench comes with 4 common socket sizes - 17mm, 19mm, 21mm and 23mm. This covers typical wheel lug nuts and several other automotive bolts. Additional sockets can be purchased separately as per application needs.

Overall, the Qimu cordless impact wrench packs professional grade power and versatility in a compact package suitable for most DIYers and home mechanics. If you're looking for a high-quality cordless impact wrench, the Qimu Cordless Impact Wrench with 1/2 inch Chuck Driver is an excellent choice. With 420 Nm of max torque, a brushless motor, and a 6.0Ah battery, it has the power and runtime to handle most automotive fastening jobs. The included accessories like the charger and sockets add convenience. Overall, Qimu's cordless impact wrench is a versatile, hardworking tool suitable for professionals and hobbyists alike.

Build Quality

The Qimu 21V Cordless Impact Wrench is built with high quality materials and sturdy construction for durability and longevity. The tool housing is made from a durable composite plastic that can withstand job site abuse without cracking or breaking.

Despite the plastic housing, the wrench still has a solid heft to it at 3.3 lbs, giving it stability for high torque tasks. The rubber overmold grip makes it comfortable to hold, reducing hand fatigue during prolonged use. The grip has an ergonomic shape that fits nicely in your hand.

The brushless motor is encased in a metal gear housing to protect it from damage. The all-metal single hammer mechanism provides robust impact power transfer. The anvil is made from hardened alloy steel for longevity.

Overall, the materials and construction give the impression of a well-built, heavy duty power tool that can withstand tough professional use while still maintaining user comfort. The Qimu impact wrench seems durable enough for most automotive repair jobs or home projects requiring high torque.

Performance

The Qimu 21V impact wrench delivers impressive power and performance for a cordless tool. It has a brushless motor that provides 420 Nm of max torque, allowing it to handle stubborn bolts and lug nuts with ease.

The torque delivery is smooth and consistent, which helps prevent overtightening or stripping bolts. Even at the highest setting, the torque curve feels linear and easy to control. This makes the Qimu great for automotive repair jobs where precision is important.

In terms of speed, the Qimu impact wrench can deliver up to 3,600 RPM no load speed and 2,600 RPM under load. This high speed allows you to zip through jobs quickly and is comparable to many corded impact wrenches. The variable speed trigger gives you good control over the speed as needed.

Overall, the power and performance of this impact wrench is very impressive. The brushless motor provides plenty of fastening torque while maintaining control and precision. For an automotive technician or DIY mechanic, the Qimu delivers professional-grade power in a cordless package.

Battery Life

The Qimu 21V Cordless Impact Wrench comes with a powerful 6.0Ah lithium ion battery that provides excellent runtime. Users report getting several hours of continuous runtime on a single charge, more than enough for most automotive repair jobs.

The large battery capacity means you won't be stopping to recharge frequently. Many users mention they can go days or even weeks between charges with moderate use.

Charging the battery is quick and convenient. It reaches a full charge in around 60-90 minutes when using the included rapid charger. This allows you to get back to work in no time.

The battery uses advanced lithium ion cells that provide fade-free power and hold a charge well when not in use. You don't have to worry about the battery draining too quickly while sitting idle.

Overall, the battery life is a major advantage of this impact wrench. The long runtime and fast recharge times ensure you can keep working efficiently without any downtime waiting for the battery. The large 6.0Ah capacity battery is perfect for automotive repair shops, DIY mechanics, and anyone who needs maximum cordless runtime.

Accessories

The Qimu impact wrench comes with several handy accessories that add value to the overall package.

Sockets

It includes 4 different sized sockets - 17mm, 19mm, 21mm and 23mm. These chrome vanadium steel sockets are durable and ideal for loosening and tightening lug nuts and other automotive bolts. The range covers common nut and bolt sizes for tires and brakes. Having the basic sockets included eliminates the need to purchase them separately.

Case

To keep everything organized, Qimu provides a sturdy plastic carry case. The case has custom molded foam inserts to securely hold the impact wrench, battery, charger and sockets. This makes it easy to transport and store the impact wrench and accessories together. The case helps protect the components from damage during storage or transportation.

Charger

The package comes with a 100-240V rapid charger that can fully charge the 6Ah battery in about an hour. The charger plugs into a standard wall outlet and has an LED indicator to show charging status. Having a rapid charger minimizes downtime when the battery runs low on a job. The charger is compact and portable.

Ease of Use

The Qimu impact wrench is designed for easy handling and operation. It has an ergonomic grip that allows you to hold and control the tool comfortably. The grip has a rubberized coating that prevents slippage even when your hands are oily or wet.

At just 2.4kg, the Qimu impact wrench is relatively lightweight for the power it delivers. You won't tire out your arms using this tool even for extended periods. The compact size also means you can use it in tight spaces where bulkier tools won't fit.

The wrench has variable speed triggers that give you precise control over the torque output. Squeeze lightly for lower torque tasks like driving in screws. Squeeze harder to deliver the full 420Nm of maximum torque for lug nuts and other stubborn fasteners. There is also a forward/reverse control switch conveniently located right by the trigger.

An LED light built into the tool illuminates your work area for better visibility, especially in dimly lit spaces. The battery fuel gauge lets you monitor remaining runtime at a glance so you know when it's time to recharge. Overall, the thoughtful design touches on the Qimu impact wrench make it very easy and intuitive to operate.

Pros

The Qimu 21V Cordless Impact Wrench has several notable pros that make it a great choice:

• Powerful torque: The brushless motor provides 420 Nm of maximum torque, allowing you to easily loosen stubborn bolts and nuts. This high torque rating makes it suitable for automotive repair and heavy duty applications.

• Useful accessories included: The impact wrench comes with 4 sockets - 17mm, 19mm, 21mm and 23mm, saving you money on buying sockets separately. It also includes a carry case for convenient storage and portability.

• Long battery life: The large 6Ah Lithium-ion battery provides enough charge to complete most automotive jobs without needing to stop and recharge frequently. You can expect up to 600 bolts per charge.

• 3 year warranty: Qimu provides a 3 year warranty on the impact wrench, giving peace of mind that it is a durable and reliable tool. This is a good warranty period for an impact wrench in this price range.

Cons

While the Qimu 21V Cordless Impact Wrench has many positives, there are a few potential downsides to consider:

• Price - This impact wrench has a higher price point than some competing models. At around £200, it's a significant investment. While the performance and power justify the price for professionals, more casual users may find it too expensive.

• Noise - Impact wrenches are inherently noisy tools due to the hammering action. The Qimu model produces a loud whirring noise at full power that requires hearing protection. While expected for the power output, the noise could be an issue for prolonged use or sensitive environments.

• Weight - At 7.5 pounds with the battery, this is a relatively heavy and bulky tool. The weight could cause fatigue when using it for extended periods or overhead work. The size makes storage a bit more difficult as well. Those with smaller hands may also find it tougher to grip and control precisely.

Conclusion

The Qimu 21V Cordless Impact Wrench is an excellent choice for automotive repairs and heavy-duty tasks. Its powerful 420 Nm of maximum torque allows you to loosen even the most stubborn bolts with ease. The brushless motor provides impressive performance while generating less heat and noise compared to brushed motors.

In terms of build quality, the Qimu impact wrench feels sturdy and durable thanks to its all-metal gear housing. The rubber overmold on the handle also makes it comfortable to hold during prolonged use. Battery life is decent, providing enough juice for most applications.

The included accessories add value, with the charger, battery, and socket set allowing you to get started right out of the box. Overall, the wrench is easy and intuitive to use after reading the manual. The variable speed trigger gives you good control over the power output.

To summarize, the Qimu 21V impact wrench is a high-performing, heavy-duty cordless tool suitable for automotive repairs and demanding tasks. It has excellent power, good runtime, and comes bundled with useful accessories. Some may find it a bit heavy, but that's expected for the performance it delivers. If you're looking for an affordable yet powerful impact wrench, the Qimu 21V is easy to recommend.