What are the core cordless tools for a mechanic?

Impact wrenches are the heart of the kit — commonly a mid-torque and a high-torque unit — plus a cordless ratchet wrench, an impact driver and a drill. Die grinders, polishers, inflators and work lights are common additions.

Should I run a compact 12V-class system?

Many mechanics do. A compact system is ideal for ratchet wrenches, small impacts, lights and inflators around the bay, where size and weight matter. A higher-output line then handles the high-torque impact wrenches.

Which mechanic tools need high-output batteries?

High-torque impact wrenches, die grinders and polishers draw hard and benefit from high-output packs and brushless motors. Ratchets, small impacts, inflators and lights are comfortable on compact batteries.

Do cordless impact wrenches have enough torque now?

High-torque cordless impact wrenches have become very capable and handle most automotive fastening and removal. For the most stubborn or highest-spec work some still keep an air or breaker bar option, so match the tool to your heaviest jobs.

The Best Cordless Tool Kit for Mechanics

A cordless kit built around a mechanic’s bench and floor — impact wrenches, ratchets, drills and the compact system that makes so much workshop work easier.

Quick answer

A mechanic’s cordless kit is built around impact wrenches (mid and high torque), a ratchet wrench and an impact driver, backed by a drill, die grinder, inflator and work light. Many mechanics run a compact system for ratchets and lights alongside a higher-output line for the big impacts.

Skill level: Buyer's Guide
Time: Varies
Trade: Automotive & Mechanical
Updated: 4 November 2026

Tools you will need

Impact wrench
Ratchet wrench
Impact driver
Drill driver
Die grinder
Polisher
Inflator
Work light

Mechanical work is fastener-driven, so a mechanic’s cordless kit revolves around impacts and ratchets — and many workshops sensibly run two battery sizes: a compact line for the light, high-use tools and a higher-output line for the big impacts.

The core kit

Impact wrenches — usually a mid-torque for general work and a high-torque for stubborn and larger fasteners. The heart of the kit.

Cordless ratchet wrench — fast, controlled fastening in tight spots; a compact-system favourite.

Impact driver and drill/driver — general driving and drilling.

Die grinder — cutting, deburring and porting; a high-draw tool.

Polisher — for detailing and finishing.

Inflator and work light — constant everyday helpers around the bay.

Two battery sizes, on purpose

Mechanics benefit more than most from a compact (12V-class or sub-compact) system for ratchets, small impacts, inflators and lights, where size and weight in tight engine bays matter. Then a higher-output line — brushless, with high-output packs — handles the high-torque impact wrenches, die grinders and polishers that pull hard. How Many Tool Batteries Do You Actually Need? helps you size both, and brushless vs brushed shows where the motor premium counts.

Enter the platform sensibly

Look for a brand that has both a strong compact line and high-torque impacts so you can run both from one ecosystem — compare them in Which Cordless Battery Platform Should You Commit To?. Enter each line with a combo kit, then add tools as skins — Combo Kit vs Tool-Only Skins.

Kitting out or upgrading a platform

Committing to a platform is a real investment, because the batteries — not the tools — are the recurring cost over the years. If you are setting up a new platform, replacing a stolen kit, or standardising your crew onto one system, spreading the cost with equipment finance can keep your working capital free for jobs and materials. It is worth weighing the repayment against the runtime and downtime you save. See how tool-and-equipment finance works for sole traders and small crews on our equipment finance guide.

Old batteries and retired tools

Flat or ageing batteries still have value, and dead lithium-ion packs must never go in general or recycling wheelie bins — damaged cells are a genuine fire risk in trucks and transfer stations. Recycle them free through the national battery scheme at B-cycle drop-off points. When you are moving platforms, working "skins" (tool-only units) that no longer suit you can often be sold or traded rather than binned. Before you buy your next skin, it is worth knowing where tool prices are heading — our Tool Price Index tracks how cordless tool prices are moving.

Frequently asked questions

What are the core cordless tools for a mechanic?: Impact wrenches are the heart of the kit — commonly a mid-torque and a high-torque unit — plus a cordless ratchet wrench, an impact driver and a drill. Die grinders, polishers, inflators and work lights are common additions.
Should I run a compact 12V-class system?: Many mechanics do. A compact system is ideal for ratchet wrenches, small impacts, lights and inflators around the bay, where size and weight matter. A higher-output line then handles the high-torque impact wrenches.
Which mechanic tools need high-output batteries?: High-torque impact wrenches, die grinders and polishers draw hard and benefit from high-output packs and brushless motors. Ratchets, small impacts, inflators and lights are comfortable on compact batteries.
Do cordless impact wrenches have enough torque now?: High-torque cordless impact wrenches have become very capable and handle most automotive fastening and removal. For the most stubborn or highest-spec work some still keep an air or breaker bar option, so match the tool to your heaviest jobs.

Written by Spanners, the Automotive & Mechanical specialist at Aus.Tools.