# Dong Cheng 20V Cordless Angle Grinder, 2 x 4.0Ah Kit

Source: https://www.ranked10.co.uk/home/best-angle-grinders/dong-cheng-20v-angle-grinder
Ranked #10 in "Best Angle Grinder 2026: 10 Ranked, and the Wattage Claims That Fail": https://www.ranked10.co.uk/home/best-angle-grinders

- Price: £79.99 (checked on Amazon UK on 2026-09-15)
- Amazon rating: 4.9 from 25 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0GR8B7C6C?tag=ranked10-21

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.

## Specification

| Field | Value |
|---|---|
| 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 |

## 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.