Power tools
Cordless or air impact wrench for a home garage?
The air tool is cheaper and more powerful; the cordless one works anywhere. That trade is the whole comparison, and it is settled by whether a compressor already exists in the garage.
| Compared on | 20 V brushless, 800 Nm | THE DEVIL 1/2 inch air impact |
|---|---|---|
| Stated maximum torque | 800 Nm | 1600 Nm |
| Torque stages published | Three, with figures — 0–431 and 0–507 Nm among them | Three-stage selector, figures not published |
| Power source | Cordless 20 V, brushless | Compressed air |
| Needs a compressor | No | Yes |
| Air consumption published | Not applicable | Not published |
| Published weight | 2.2 kg (4.9 lb) with battery | Not published |
| Lighting | 3 LEDs around the head | None published |
| Runs out mid-job | When the battery is flat | Never, while air lasts |
| Listed on amazon.com | No | No |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.
No amazon.com listing was found for this one. We hold references for other markets but none for the United States, so it may not be buyable here — which is the first thing to weigh against anything below.
Buy the DongCheng if you do not already own a compressor. Brushless, 2.2 kg (4.9 lb) with the battery, three torque stages published as figures rather than icons, and three LEDs around the head that remove the shadow your own hand casts. The battery platform is the long-term commitment, not the tool.
No amazon.com listing was found for this one. We hold references for other markets but none for the United States, so it may not be buyable here — which is the first thing to weigh against anything below.
Buy the KS Tools if compressed air is already in the garage. Sixteen hundred newton-meters for the price of a mid-range battery is the clearest value in this category, and an air tool is lighter at the head and never stops mid-job. Its air consumption is not published — settle that with the seller before assuming a small compressor will feed it.
For loosening, comfortably — even a seized wheel bolt rarely needs more. Neither tool should do the final tightening: that is a torque wrench's job, at the value the vehicle manufacturer publishes.
Enough continuous air delivery in liters per minute, which this listing does not publish. A starved air tool turns slowly and weakly in a way that looks like a fault.
Yes, with either tool. Chrome sockets are hardened to resist wear rather than shock and fail by shattering.
Cordless 20 V · brushless · 800 Nm stated · three torque stages (0–431 / 0–507 Nm stated) · 2.2 kg (4.9 lb) with battery · 3 LEDs
A brushless cordless wrench at a stated 800 Nm and 2.2 kg (4.9 lb) with battery, with three torque stages published as figures rather than as icons.
Best for: Someone starting a battery platform from scratch and wanting torque per euro.
Air · 1/2 inch · 1600 Nm stated · 3-stage torque selector · forward/reverse lever
An air impact wrench at 1600 Nm with a three-stage selector — the cheapest way into serious loosening torque, provided you already have a compressor.
Best for: A garage that already has a compressor and needs loosening torque rather than portability.
