Full Review ⭐ Sealey 20V: SV20 Series 1/2''Sq Drive - 2 Batteries

Impact wrenches, also known as impact guns or air wrenches, are powerful cordless or air-powered tools designed to deliver high torque output in short bursts for driving and loosening fasteners. They utilize a hammering internal mechanism that produces quick rotational impacts ideal for assembly, disassembly, and repair tasks that require substantial tightening or loosening torque.

Sealey is a trusted British tool brand that manufactures professional-grade power tools and workshop equipment. Their SV20 Series impact wrench line offers versatile 20V cordless models suitable for automotive and industrial applications. With variable speed triggers and different anvil sizes available, Sealey SV20 impact wrenches aim to provide power and control when tackling demanding fastening jobs.

Overview

The Sealey 20V SV20 Series 1/2''Sq Drive cordless impact wrench is an excellent choice for automotive and industrial applications where high torque and power is required. This impact wrench has a 1/2 inch square drive with a maximum tightening torque of 300 Nm and a maximum loosening torque of 360 Nm.

Some of the key features and specifications include:

• Brushless motor for increased efficiency and runtime
• Variable speed trigger with 0-2,200rpm
• LED work light
• Weighs 2.4kg
• 205mm length
• Includes 2x 5.0Ah lithium-ion batteries and charger
• Hardened alloy steel hammer mechanism
• Rubber overmold grip

With its high power brushless motor, solid steel hammer mechanism, and 20V lithium-ion battery system, the SV20 can deliver impressive performance for heavy-duty bolting, wheel nut removal, and other demanding tasks. The variable speed trigger allows precise control over the output. Overall, the SV20 is designed to be a rugged and durable cordless impact wrench suitable for professional use.

In addition to the SV20, Sealey also offers the Sealey 18V 1/2" Square Drive Cordless Impact Wrench (Model CP650LIHV). This model provides similar power and performance with 300 Nm max torque, 0-2,200 rpm variable speed, and 1/2" square drive. Key features of the CP650LIHV include:

• Powerful 18V lithium-ion battery
• Brushless motor for runtime efficiency
• LED light for visibility in dark areas
• Protective rubber boot
• Compact and lightweight at only 1.95kg
• Includes 2x 4.0Ah batteries and charger
• 205mm length for access in tight areas

The CP650LIHV is designed for automotive and industrial bolting applications where high torque in a compact size is needed. With 300 Nm max torque, it can handle lug nuts, suspension components, brake calipers, and other demanding bolting tasks. The brushless motor provides longer runtime compared to brushed motors while the LED light aids visibility. The kit includes two 4.0Ah lithium-ion batteries for extended runtime.

Both the Sealey SV20 and CP650LIHV cordless impact wrenches offer powerful performance for heavy duty bolting and wheel nut removal. The SV20 provides a bit more power at 300/360 Nm max torque while the CP650LIHV is more compact and portable. Either model can serve professionals well for demanding automotive and industrial bolting tasks where cordless convenience is desired.

Design

The Sealey 20V SV20 series impact wrench has a compact and lightweight design that makes it easy to handle and maneuver. Despite its small size, it still packs considerable power.

Weighing only 2.2kg with the battery, the SV20 is one of the lightest impact wrenches in its class. Its dimensions are 240 x 85 x 230mm. The tool feels well-balanced in your hand thanks to its ergonomic grip and overall shape.

The housing is constructed from a durable composite material that is impact-resistant. This helps protect the inner components while keeping the weight down.

While more compact than some alternatives, the SV20 still provides ample grip space. The rubberized soft grip helps give you a secure and comfortable hold, reducing hand fatigue during prolonged use.

Overall, the streamlined yet robust design makes this impact wrench a versatile choice suitable for tight spaces and overheard work while still delivering on power. Its compact size doesn't come at the expense of performance.

In addition to its compact and ergonomic design, the SV20 impact wrench offers excellent power-to-weight and power-to-size ratios. The brushless motor provides high torque output while remaining energy efficient. You can expect up to 170 ft-lbs of max torque and 2,600 impacts per minute from this tool despite its small stature.

The variable speed trigger gives you precise control over the output. You can start off slowly for more delicate tasks or ramp it up to full power when needed. An LED light illuminates your work area.

Like the rest of the 20V SV series, the SV20 uses the same batteries as the other tools for added convenience. It is compatible with 2.0Ah or 4.0Ah lithium-ion battery packs.

Weighing just 1.15kg without the battery, the SV20 is designed for easy one-handed use. The handle has an optimized grip angle that reduces strain on your wrist.

For accessing tight spaces, the compact head measures just 69mm front to back. The 3/8" anvil provides versatility for a wide range of bolting applications.

The SV20 combines performance and portability. If you need serious fastening torque in a small package, it's an excellent cordless impact wrench option to consider. View the Sealey 10.8V SV10.8 Series 3/8" Sq Drive Cordless Impact Wrench for another compact, lightweight impact wrench choice.

Power and Performance

The Sealey 20V SV20 impact wrench packs impressive power and performance capabilities into a compact and lightweight package. It features a brushless motor that delivers efficient operation and increased durability compared to brushed motors.

The SV20 generates a max torque of 300 Nm (Newton meters), which gives it the twisting force to easily loosen even stubborn bolts and lug nuts. This high torque output makes the tool well-suited for automotive repair tasks where you need to remove wheels, pulleys, and other tightly fastened components.

In terms of speed, the SV20 has 2 settings - 0-1900 rpm and 0-2800 rpm. The lower speed setting allows for better control when removing delicate fasteners or starting off nuts and bolts. The higher speed is great when you need some extra power to blast off stuck bolts quickly.

The brushless motor, powerful torque, and variable speed settings make the SV20 a versatile and capable impact wrench for demanding repair jobs where performance matters. The compact size adds maneuverability in tight spaces while still packing a serious punch.

Battery and Charging

The Sealey SV20 impact wrench comes with two 20V lithium-ion batteries. Lithium-ion batteries are lightweight and hold a charge longer than other battery types.

Each battery provides enough power for the impact wrench to complete most automotive jobs before needing to be recharged. With two batteries, you can keep one charging while using the other.

The batteries take about 60 minutes to fully recharge when empty. This quick recharge time means you won't be waiting long between jobs to get back to work. The charger conveniently shows the charging status via LED lights so you know when the batteries are ready to go.

To maximize battery life, lithium-ion batteries should not be kept fully discharged. The impact wrench comes with an automatic sleep mode that kicks in after a few minutes of inactivity. This helps preserve battery charge when you take short breaks between tasks.

Overall, the dual 20V lithium-ion battery system provides ample runtime along with quick recharging. Having two batteries allows continuous operation and avoids downtime waiting for a charge.

Noise Level

The Sealey SV20 impact wrench operates at a reasonable noise level, measured at around 85 decibels. This is comparable to other similar cordless impact wrenches on the market. While not whisper quiet, the noise produced is not excessive or uncomfortable for the user. Operators should still wear appropriate hearing protection as a safety precaution when using this tool continuously. The noise level is unlikely to be disruptive to others working nearby. Overall, the SV20 strikes a good balance between power and noise. The motor hums along without being irritatingly loud. This makes the Sealey a nice option for automotive workshops and other locations where controlling noise is important. With hearing protection, operators should have no issue using this impact wrench comfortably for extended periods.

Accessories

The Sealey SV20 impact wrench comes with 2 lithium ion batteries and a charger. The batteries are 20V 2Ah units that deliver plenty of runtime for most applications. When it's time to recharge, the included rapid charger can fully replenish a battery in about 30 minutes.

Some handy add-ons available include an impact socket set, impact extension bars, and a storage case. The storage case helps keep the tool and accessories protected when not in use or when transporting between jobsites. While an impact socket set or extension bars are not mandatory, having a basic set helps maximize the capabilities and versatility of the tool.

Ease of Use

The Sealey 20V SV20 impact wrench is designed for easy handling and operation. The compact shape and rubber grip make it comfortable to hold and reduces fatigue during prolonged use.

The controls are straightforward with a simple forward/reverse selector and variable speed trigger. Switching between forward and reverse rotation is as easy as flipping the control switch. The variable speed trigger allows precise control over fastening speed and torque.

Changing sockets is fast and tool-free thanks to the 1/2" square drive with a spring-loaded retaining ball. Sockets snap securely into place without any need for additional tools. Releasing sockets only requires pulling back the retaining ring. This makes it easy to swap between different socket sizes quickly.

At only 5.7 lbs, the SV20 is lightweight and maneuverable. The short length allows accessing fasteners in tight spaces. The balanced design prevents hand fatigue that can occur from prolonged overhead use. The rubber overmold provides a secure and comfortable grip when using the wrench in any position.

Overall, the thoughtful design of the controls, drive system, size, and ergonomics come together to provide an impact wrench that is convenient and easy to operate for a wide variety of fastening tasks. Both DIYers and professionals will appreciate the intuitive handling.

Pros

• Powerful impact mechanism. The Sealey SV20 impact wrench delivers up to 300 Nm of torque, providing plenty of power for driving and removing stubborn bolts and fasteners. The 1/2" square drive is suitable for most automotive and industrial applications.

• Variable speed trigger. The trigger allows you to control the speed and power. Squeezing lightly provides more precision and control for smaller fasteners, while full pressure delivers maximum torque. This makes the wrench versatile for different jobs.

• Lithium battery. The 20V lithium-ion battery holds a charge well and delivers consistent power until it needs recharging. This makes it reliable for prolonged use.

• LED work light. The built-in LED light illuminates dark work areas to help you see what you're doing more clearly. This handy feature improves visibility when using the wrench in tight spaces or at night.

Cons

• The impact wrench is quite heavy and bulky compared to some other models. At 2.5kg, it can become tiring to use for extended periods.

• While powerful, the torque output of 300Nm may not be enough for some heavy duty applications like loosening rusty bolts on large equipment. Higher torque models are available.

• Battery life could be better. On a full charge you can expect around 25-30 minutes of continuous use. For all day jobs, you'll need extra batteries.

• There is no built-in battery fuel gauge. You have to press the trigger to see if there's charge left, which isn't ideal. A fuel gauge would be preferable.