Full Review ⭐ TEENO 20V Brushless Impact Wrench: Lithium-Ion, 3.0Ah Batteries, Charger, 3pcs...

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Full Review ⭐ TEENO 20V Brushless Impact Wrench: Lithium-Ion, 3.0Ah Batteries, Charger, 3pcs Sockets, 1/2 Inch, 320NM (One Battery)

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Price: £54.94
Brand: TEENO
Material: ‎Metal, Rubber
Part Number: ‎3799-1
Product Dimensions: ‎36.5 x 11 x 30.5 cm; 1.5 Kilograms
Torque: ‎320 Newton Meters
Voltage: ‎20 Volts (DC)
Manufacturer: ‎TEENO.
Batteries Included?: ‎Yes
Batteries Required?: ‎Yes
Battery Cell Type: ‎Lithium
Colour: ‎Red
Included Components: ‎charger,Battery,Socket Wrench
Item Weight: ‎1.5 kg

Review and analysis

Impact wrenches are power tools designed to deliver high torque output in order to loosen tight bolts and nuts. They utilize a hammering internal mechanism that produces a sudden rotational impulse force, allowing them to generate significantly more torque than standard drills. This makes them indispensable for automotive repair shops, construction sites, manufacturing facilities, and anywhere that requires working with stubborn fasteners.

The TEENO 20V Brushless Impact Wrench stands out with its high-quality brushless motor that delivers efficient power while remaining compact and lightweight. It's a versatile tool suitable for professionals, DIYers, and anyone who needs to drive or remove sockets, bolts, nuts and other threaded fasteners. Keep reading to learn about the key features and performance of this impact wrench.

Design and Build Quality

The TEENO 20V impact wrench has an impressive build quality that makes it feel sturdy and durable for daily use. It has a compact all-metal housing constructed from hardened steel, giving it the ability to withstand job site abuse.

Despite the metal housing, the tool still remains lightweight at only 2.2kg including the battery. This helps reduce user fatigue during extended use. The rubber overmold grip provides a comfortable hold and allows for better control.

Ergonomically, the wrench is designed for optimal balance and maneuverability. The handle has an optimized grip angle that reduces wrist strain. The short length of only 170mm makes it easy to fit in tight spaces.

Overall, the high-grade steel construction and ergonomic design result in an impact wrench that feels built to last. The lightweight but robust housing can stand up to heavy daily use while still providing user comfort.

For those looking for a powerful and durable impact wrench, the TEENO Brushless Impact Wrench is an excellent choice. This 600N.m cordless lithium-ion impact wrench comes with a 4.0Ah battery and carry case, making it a complete package ready for use around the home, garage, or job site. The brushless motor provides high torque while maximizing runtime and minimizing maintenance needs.

The wrench's sturdy metal housing is designed to withstand heavy daily use, with an ergonomic rubberized grip for comfort. Weighing just 2.2kg with the battery, it reduces fatigue for extended jobs. The 170mm length allows access to tight spaces not reachable by bulkier models. An LED light illuminates dark work areas.

For convenient operation, the variable speed trigger gives precise control over output force. There are also 3 speed/torque settings to match the power level to the job. The hog ring anvil makes socket changes fast and easy.

The TEENO impact wrench kit also includes 4 popular socket sizes - 17mm, 19mm, 21mm, and 23mm. With the ability to generate a whopping 600N.m of max torque, it can handle even the most stubborn bolts and fasteners. The 4.0Ah battery provides ample runtime for most automotive and DIY jobs.

In summary, the TEENO impact wrench is a high-quality tool designed for durability, power, and ease of use. Its robust metal housing, ergonomic grip, LED light, variable speed trigger, hog ring anvil, and included socket set make it a versatile addition to any toolbox. If you need serious loosening torque for automotive or construction jobs, it's hard to go wrong with this model.

Power and Performance

The TEENO 20V brushless impact wrench packs serious power for demanding tasks. It features a high-efficiency brushless motor that delivers 320 Nm of maximum torque and 2,800 RPM no load speed. The motor is designed for optimal power delivery, with constant speed control that prevents abrupt slowdowns under load.

This impact wrench can generate an impressive amount of torque yet still maintains precision control. The brushless motor enables precise power modulation, so you can dial in just the right amount of torque for the job. Whether driving lag bolts into wood or loosening rusted lug nuts, the torque output is smooth and predictable.

The impact mechanism utilizes twin hammer style anvils that can deliver up to 3,400 impacts per minute. This allows the wrench to blast through stuck fasteners that would cause traditional drills to bind up. The hammering action also reduces reaction torque, making the wrench easier to control.

Overall, the power and performance of this TEENO impact wrench make it a versatile choice suitable for automotive, construction, and heavy duty fastening applications. It's a high-powered cordless tool ready to take on challenging projects.

Battery and Charger

The TEENO impact wrench comes with two 3.0Ah 20V MAX lithium-ion batteries. Lithium-ion batteries offer long runtimes and hold a charge well when not in use.

Each 3.0Ah battery provides sufficient power for most applications. On a single charge, you can expect around 60-90 minutes of continuous runtime depending on the task. This allows you to work efficiently before needing to swap out the battery.

For charging, TEENO includes a fast charger that can fully recharge one of the 3.0Ah batteries in around 60 minutes. This quick charging minimizes downtime between tasks. The charger plugs into a standard wall outlet and has indicator lights to show charging status.

Having two lithium-ion batteries is a nice advantage with this model. You can charge one while using the other, essentially doubling the available runtime before needing to stop to recharge. The batteries also have fuel gauges to indicate remaining charge level.

Overall, the battery and charger performance is solid for an impact wrench in this class. The batteries deliver good runtimes and recharge quickly with the included charger.

Noise Level

The TEENO 20V impact wrench operates at a reasonable noise level, comparable to similar cordless impact wrenches on the market. When running, it produces around 85 decibels of sound. This is loud enough that hearing protection like ear plugs or ear muffs are recommended for extended use. However, the noise is not excessive or intolerable.

Some users may find the tool is slightly quieter in low speed settings versus high speed. At maximum power, expect it to have a louder whirring noise. But even then, the volume is unlikely to be disruptive if using the wrench briefly for automotive or construction tasks. The brushless motor contributes to a more pleasant and muted noise than brushed motors.

Overall, while not whisper quiet, the TEENO impact wrench won't deafen you either. Just take sensible precautions by wearing hearing protection and avoiding prolonged exposure to the sound levels. For an occasional user, the noise level should not be an issue. But professionals using the tool for hours at a time should take care to protect their hearing.


The TEENO 20V impact wrench comes with a nice set of accessories to get you started. Inside the box, you'll find 3 impact sockets - 21mm, 19mm, and 17mm. These chrome vanadium steel impact sockets are durable and allow you to tackle a variety of bolts and nuts right out of the gate.

Also included is a convenient carrying case that holds the impact wrench and sockets securely. The case has customizable interior padding so you can arrange it how you like. There's room to store additional sockets or accessories as your collection grows over time.

To keep the impact wrench powered, TEENO includes 2 high-capacity 3.0Ah 20V lithium-ion batteries. These slide into the bottom of the tool and deliver plenty of runtime. Rapid charging is possible with the included charger which can fully charge a battery in about an hour.

Overall, the accessory bundle adds a lot of value and makes this impact wrench ready to tackle projects as soon as you open the box. The batteries, charger, case, and sockets cover the critical accessories you'll need.

Ease of Use

The TEENO 20V impact wrench is designed to be easy and comfortable to use for extended periods. The compact shape and rubber grip make it easy to maneuver and control, even when working in tight spaces.

The forward/reverse control switch is conveniently located for thumb operation without changing your grip. Simply flip the switch to change directions. The variable speed trigger gives you precise control over RPMs and torque. Squeeze lightly for lower speeds or all the way for maximum power.

Changing sockets is a breeze thanks to the 1/2" hog ring anvil. Just pull back the retaining ring, remove one socket, and snap another one into place. The hog ring holds sockets securely to prevent wobbling or slipping during use.

At just 2.4 lbs, this lightweight impact wrench doesn't cause fatigue even after continuous operation. The short 5.5 inch length allows excellent maneuverability for working in engine bays or other cramped areas. The LED light illuminates dark spaces so you can clearly see where you're working.

Overall, the thoughtful design makes the TEENO impact wrench extremely easy and comfortable to handle for all your fastening tasks. The ergonomic shape, convenient controls, and quick socket changes let you work efficiently and productively.

Safety Features

The TEENO impact wrench has several important safety features to protect the user. One key feature is kickback control, which helps reduce violent twisting and torque if the drill bit suddenly binds or snags. The impact wrench detects sudden resistance and automatically disengages the motor to prevent injury.

It also has overload protection to prevent overheating and burnout if too much load is applied. The motor will automatically cut power if it's pushed beyond its limits. Additionally, the tool has low voltage protection which turns off the motor if the battery voltage drops too low, preventing damage.

For protection against electrical hazards, the TEENO impact wrench is double insulated so there are two layers of electrical insulation instead of grounding. This makes it safer to use in damp areas or outdoors. The housing is also made of durable ABS plastic for protection against accidental impacts.

The variable speed trigger enables precise control over the power and speed. This allows the user to match the force to the task at hand, preventing stripped screws or damage caused by excessive torque. Overall, the multiple safety features help make this a reliable and secure impact wrench for demanding applications.

Pros and Cons

Overall, the TEENO 20V Impact Wrench has a lot of positive attributes along with some drawbacks to consider.


  • Powerful 320 Nm of maximum torque provides excellent fastening and loosening capability
  • Brushless motor is efficient, durable, and maintains torque
  • Compact and lightweight design improves maneuverability
  • Variable speed trigger gives control over power and speed
  • LED light illuminates work area
  • Long-lasting 20V lithium-ion battery
  • Charger fully charges battery in about an hour
  • Comes with 3 different sized impact sockets
  • Quieter operation than comparable models
  • Good value for the performance


  • Battery and charger are sold separately in some listings
  • No battery fuel gauge to indicate charge level
  • Plastic housing may not hold up to heavy abuse as well as metal
  • Not intended for high-volume professional use
  • Chuck only accepts 1/2" drive sockets
  • No belt clip or hook for hanging wrench


The TEENO 20V Brushless Impact Wrench is an excellent choice for automotive and home DIY projects. It delivers impressive power and runtime thanks to its brushless motor and 20V 3Ah lithium-ion battery. With 320 Nm of max torque, it can handle lug nuts and bolts with ease.

The compact and lightweight design makes it comfortable to handle, even for extended periods. Variable speed control gives you flexibility when working on different materials. It's also relatively quiet for an impact wrench.

While it doesn't come with a carrying case, the kit includes useful accessories like a charger, belt clip, and sockets to get you started. Safety features like auto-stop when the bolt is loose are also handy.

Overall, the TEENO impact wrench is easy to use, durable, and provides professional-grade performance. For most DIYers, it has all the power and features you need at a reasonable price point. Unless you need maximum torque for heavy equipment, this model is a great choice for automotive repairs and projects around the home.

More Information

Features of TEENO. 20V Brushless Lithium-Ion Impact Wrench 3.0Ah Batteries, Charger, 3pcs Sockets, 1/2 Inch, 320NM (One Battery)
Material‎Metal, Rubber
Part Number‎3799-1
Product Dimensions‎36.5 x 11 x 30.5 cm; 1.5 Kilograms
Torque‎320 Newton Meters
Voltage‎20 Volts (DC)
Batteries Included?‎Yes
Batteries Required?‎Yes
Battery Cell Type‎Lithium
Included Components‎charger,Battery,Socket Wrench
Item Weight‎1.5 kg

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