Milwaukee 2621-20 M18 18V Lithium Review (2026): A Spec-Based Look

What stands out

• 3,000 RPM stroke rate for fast cutting performance
• Quik Lok blade clamp for tool-free blade changes
• All-metal gearbox protects internal components from drops
• Counter balance mechanism reduces vibration during use
• RedLink Intelligence prevents tool and battery overheating

Who it fits

Key specs explained

Strokes Per Minute: 3,000 RPM

This rating indicates the blade moves up and down three thousand times each minute. Higher stroke rates allow for faster cutting through wood, metal, or plastic. You benefit from reduced cutting time on demolition projects. When comparing kits, check if other reciprocating saws offer similar or higher speeds for your specific material removal needs.

Tool Weight: 7.4 pounds

The tool weighs 7.4 pounds without a battery. This weight affects how fatiguing the saw is during extended use overhead or in tight spaces. A lighter tool reduces arm strain, while a heavier one may offer more stability. Compare this weight to other cordless saws in combo kits to find a balance you can handle comfortably.

Power Source: M18 18V Lithium Ion

This saw runs on Milwaukee’s 18-volt lithium-ion battery system. It provides consistent power without cords, allowing freedom of movement on job sites. The 18V platform supports many tools, so you can share batteries across different devices. When shopping for kits, ensure you have compatible batteries or consider bundles that include them for immediate use.

Blade Clamp: Quik Lok Blade Clamp

The Quik Lok system allows you to change blades quickly by simply opening and closing a latch. This feature saves time when switching between cutting different materials like wood or metal. You avoid needing extra tools for blade changes. Compare this mechanism to screw-type clamps on other saws to see which offers faster workflow for your projects.

Battery Included: Bare Tool

This listing includes only the saw, with no battery or charger. You must already own compatible M18 batteries to operate this tool. This option is ideal for existing Milwaukee users who want to add a new tool to their collection. Check your current battery inventory before purchasing to ensure you can use the saw immediately upon arrival.

Build Quality and Physical Design

The Milwaukee 2621-20 features an all-metal gearbox, which protects internal components from damage if the tool is dropped during work. This construction choice supports durability in demanding demolition environments where impacts are common. The tool measures 15.1 inches in length, 7.1 inches in width, and 23 inches in height. These dimensions define the physical footprint you must manage in tight spaces or when maneuvering around obstacles.

Weighing 7.4 pounds, the unit offers a balance that you can handle for extended periods. The listing notes a counter-balance mechanism that reduces vibrations when cutting through thick lumber. This feature helps maintain control and reduces fatigue during heavy use. The Quik Lok blade clamp allows you to switch blades quickly by simply opening and closing the latch. This design improves workflow efficiency when changing tasks frequently.

According to the listing, the tool operates at 3,000 strokes per minute. This speed supports rapid material removal for various cutting applications. The red and black finish provides a standard industrial look. The M18 compatible design means you can use it with specific 18-volt lithium-ion batteries, including models 48-11-1860 and 48-11-1850. This compatibility ensures you can integrate the saw into your existing power system without needing additional chargers or separate battery packs.

Setup And Daily Use Guide

Setting up this Milwaukee M18 reciprocating saw is straightforward because it is sold as a bare tool. You must supply your own compatible M18 18V lithium-ion battery. The listing confirms compatibility with specific models, including the 48-11-1860, 48-11-1850, 48-11-1828, 48-11-1815, 48-11-1840, and 48-11-1820. Once you insert a charged battery, the RedLINK Intelligence system engages. This feature enables cross-platform communication between the tool and the battery. It monitors power draw to prevent overheating and protects the tool from drawing excessive current. This ensures efficient operation during demanding tasks.

Daily use benefits from the Quik Lok blade clamp. You can switch blades quickly by simply opening and closing the latch. This mechanism supports rapid changes between different cutting applications without needing additional tools. The tool weighs 7.4 pounds, which contributes to its balance during extended use. An internal counter-balance mechanism reduces vibrations when you are cutting through thick lumber. This helps maintain control and reduces fatigue.

The all-metal gearbox adds durability to the internal components. If you drop the saw during a job, the metal construction helps protect the gears from damage. This allows you to continue working without immediate interruption. The 3,000 RPM stroke rate provides consistent blade movement for efficient material removal. You can rely on these specifications for heavy-duty demolition and cutting tasks in various environments.

Before You Buy This Saw

You need to verify battery compatibility before purchasing. This tool is a bare unit, so you must supply your own M18 18V lithium-ion battery. Check the listing for compatible models like the 48-11-1860 or 48-11-1850. Without a battery, the saw remains inactive. The REDLINK INTELLIGENCE feature helps prevent overheating by communicating with the battery, but it does not replace the need for a compatible power source. You should also consider blade storage. The Quik Lok clamp allows fast changes, but you will need to keep spare blades organized for different materials. Since it weighs 7.4 pounds, ensure your work position allows for comfortable handling during long cuts. This saw fits well in a kit if you already own M18 batteries. It complements other tools by handling demolition tasks that require high-speed reciprocating motion. Keep the metal gearbox clean to maintain durability.

Check before you buy

• Confirm you have a compatible M18 18V battery
• Check included blade count for your specific tasks
• Verify weight distribution for your comfort level
• Ensure workspace allows for safe reciprocating motion

The product at a glance

1

Milwaukee M18 Cordless Sawzall

Best for: Demolition work with existing M18 batteries

Power Source

M18 18V

Strokes Per Minute

3,000 RPM

Battery Included

Bare Tool

Tool Weight

7.67 pounds

Tool Length

15.1 inches

Blade Clamp

Quik Lok

View on Amazon: Milwaukee M18 Cordless Sawzall Affiliate link

This bare-tool reciprocating saw runs on M18 18V lithium-ion batteries and delivers 3,000 strokes per minute. It features a Quik Lok blade clamp for fast changes and an all-metal gearbox for durability. The internal counter-balance mechanism reduces vibration during heavy cutting. You get a robust tool designed for demolition and rough cutting tasks without the weight of an included battery.

Pros

• 3,000 RPM stroke rate for efficient cutting
• Quik Lok blade clamp for quick swaps
• All-metal gearbox protects internal components
• Counter-balance mechanism reduces vibration
• REDLINK Intelligence prevents overheating

Cons

• Sold as a bare tool with no battery included
• Heavier at 7.4 pounds than some competitors
• No variable speed trigger listed in specifications

Good fit if

• You already own M18 18V batteries
• You need a durable saw for demolition work
• You prefer quick blade changes with Quik Lok

Skip if

• You need a complete kit with batteries
• You require a lightweight tool under 6 pounds
• You want variable speed control

Verdict: Milwaukee 2621-20 M18 Reciprocating Saw suits contractors who already have M18 batteries and need a durable, high-stroke-rate saw for tough demolition jobs.

Specifications side by side

Frequently asked questions

See also

• milwaukee 2621 20 m18 18v lithium alternatives
• milwaukee vs RYOBI reciprocating saw
• milwaukee 2621 20 18v cordless reciprocating review
• milwaukee 0880 20 18v cordless lithium ion review