10 Best Battery Impact Wrench

The Milwaukee M18FMTIW2F12-0 is a cordless mid-torque impact wrench designed for users needing reliable power for automotive or light industrial tasks. It runs on an 18V lithium-ion battery system (battery not included), which is common in cordless tools and offers good portability without a cord. The tool weighs about 1.84 kg, making it relatively lightweight for its class, which helps reduce user fatigue during extended use.

Its 1/2-inch drive size fits most standard sockets, suitable for common fastening jobs. The wrench is made with durable chrome vanadium steel and features a friction ring that allows for easy socket changes, improving workflow speed.

Milwaukee’s reputation and compatibility with M18 batteries make this tool a solid choice for DIY enthusiasts or professionals seeking a reliable impact wrench without extra features. Users requiring the highest torque or longest battery life might consider comparing models with detailed specifications.

The Bosch Professional BITURBO GDS 18V-1600 HC is a strong cordless impact wrench designed for heavy-duty metalwork, delivering up to 1600 Nm of tightening torque and an impressive 2200 Nm starting torque. It runs on 18V lithium batteries (sold separately), which offers cordless freedom but requires compatible batteries and a charger. Its 3/4" drive size makes it well-suited for larger bolts, particularly in the M16 to M33 range, commonly found in construction or automotive work.

Weighing 3.2 kg, the tool is somewhat heavier, which is typical for a powerful wrench with such torque. The built-in brushless motor ensures efficient power use and durability. It features three speed and torque settings, allowing you to adjust power based on the task, adding versatility and control. A notable feature is the Automatic Bolt Unlock mode, which prevents bolts or nuts from falling, enhancing safety and ease of use.

This impact wrench is ideal for professionals or serious DIYers who need high torque and cordless flexibility, although beginners might find the weight and cost of acquiring additional batteries challenging.

The Makita DTW300Z is a powerful 18V battery impact wrench designed primarily for users who already have compatible Makita batteries, since it comes as a tool-only model without battery or charger included. It delivers a strong torque of 330 Newton meters, which is good for most heavy-duty fastening tasks like automotive work or construction. The 1/2-inch drive size is standard for impact wrenches, suitable for various nuts and bolts. Weighing just 1.2 kilograms, it’s relatively lightweight, making it easier to handle for longer periods without causing too much fatigue. Its ergonomic design helps with comfort and control during use.

The tool runs at a high speed of up to 3200 RPM, which means it can complete jobs quickly. Additional features like twin LED job lights improve visibility in tight or dark spaces, and the forward/reverse automatic stop prevents over-tightening or stripping. The wrench also includes dust and moisture protection, enhancing durability for tough job site conditions. Buyers should note it’s quite loud at 108 dB, so hearing protection is recommended during use.

Since there’s no battery included, you’ll need to invest in compatible Makita 18V batteries separately if you don’t already own them. This model suits DIYers and professionals who want a reliable and robust impact wrench and already have Makita’s 18V battery platform. If you need an all-in-one kit including batteries and charger, you might want to look for a different package.