Rank #10 in Best Angle Grinder 2026: 10 Ranked, and the Wattage Claims That Fail
Dong Cheng 20V Cordless Angle Grinder, 2 x 4.0Ah Kit
- Rating
- 4.9
- Ratings
- 25
- Rank
- #10
Price and rating as shown on Amazon when we collected them. Both change.
The Dong Cheng DCSM03-125 is a 125mm angle grinder sold as a 20V cordless kit with two 4.0Ah batteries, a brushless motor quoted at 8,500 RPM and a price of £79.99. It takes the number 10 slot in our guide to the best angle grinders. Its own listing is the reason it sits at the bottom rather than higher up: the title, the kit description and the bullets all describe a cordless tool, while the specification table underneath them gives the power source as 'Corded Electric'.
The same table quotes 630 watts next to a 20V battery — a figure in the same territory as the three mains grinders in the guide, which are listed at 720 W, 750 W and 900 W. The ratings do not close either: the listing shows 4.9 out of 5 from 25 ratings, while its own histogram adds 92 five-star and 8 four-star ratings to a total of 100. Everything on this page comes from the Amazon listing for the Dong Cheng DCSM03-125; we have not tested the tool ourselves, and where the listing disagrees with itself we have quoted both numbers rather than picking one.
How those 25 ratings break down
An average hides its own shape. This is the spread behind the 4.9 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £79.99 |
|---|---|
| Customer rating | 4.9 out of 5 from 25 ratings |
| Power source (as listed) | Corded Electric |
| Voltage | 20 volts |
| Wattage (as listed) | 630 watts |
| Maximum rotational speed | 8,500 RPM |
| Battery in the title | 2 x 4.0Ah, 2-hour fast charge |
| Item weight | 6.07 kg |
What it is up against
The rivals it was ranked against in Best Angle Grinder 2026: 10 Ranked, and the Wattage Claims That Fail.
Questions people ask
Is the Dong Cheng 20V angle grinder cordless?
The title and bullets describe a 20V cordless tool with a 4.0Ah battery, but the 'Power source' field in the spec table says 'Corded Electric'. Both statements appear on the same listing for the DCSM03-125, and we cannot tell you which one is correct.
How much power does it have?
The listing quotes 630 watts and 8,500 RPM for the DCSM03-125. The three mains models in the guide are listed at 720 W, 750 W and 900 W, so at 630 W this one is quoted close to them despite the 20V battery.
What comes in the box?
The title describes a '2x4.0Ah Kit' and the spec table gives the number of items as 6 while 'Included components' says only 'Angle Grinder'. Two batteries and a charger are implied by the title but not named in that field.
How many reviews does it have?
The listing shows 4.9 out of 5 from 25 ratings, and its histogram lists 92 five-star and 8 four-star ratings, which adds to 100 — a different total from the 25 in the review count.
Is it heavy?
The listing gives an item weight of 6.07 kg for the DCSM03-125.
What is the model number?
The listing gives DCSM03-125 as both the model number and the part number, under the brand Dong Cheng, manufactured in China.
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