18V Best by platform
18V cordless angle grinders
On a grinder, safety matters as much as power: look for a brake, kickback protection and restart protection. My pick: the DeWalt DCG406, with a paddle switch, brake and kickback protection.
Reviewed on 5 November 2026 · Data from the official spec sheets, linked on each model · As an Amazon Associate I earn from qualifying purchases.

An angle grinder cuts metal, tiles and stone, and grinds down welds. It’s one of the tools behind the most accidents, so here safety counts as much as power.
Every grinder on this list takes 125 mm discs, the most versatile size. Use them with 4 Ah batteries or bigger.
What to look for before you buy
- Restart protection: it won’t start by itself if the battery comes out with the trigger locked.
- Kickback protection: it stops if the disc jams.
- Disc brake and a dead-man (paddle) switch.
- Brushless: more runtime.
| Disc | 125 mm |
|---|---|
| Speed | 8,500 rpm |
| Safety | Restart protection and soft start |
| Weight | 2.3-3.7 kg with battery |
| Motor | Brushless |
- Good power for the price
- The disc guard can get in the way on some cuts
Official spec sheet for the Makita DGA504Z · Sold without battery or charger
DeWalt 18V XRMy pick
DeWalt DCG406N
The most complete safety package: brake, kickback protection and paddle switch.
| Disc | 125 mm |
|---|---|
| Speed | 9,000 rpm |
| Safety | Electronic brake, kickback clutch, dead-man switch |
| Weight | 1.75 kg |
| Motor | Brushless |
Official spec sheet for the DeWalt DCG406N · Sold without battery or charger
Bosch Professional GWS 18V-8
Light and the fastest on the list, with KickBack Stop. For medium jobs.
| Disc | 125 mm |
|---|---|
| Speed | 11,000 rpm |
| Safety | KickBack Stop, restart protection, soft start |
| Weight | 1.6 kg without battery |
Official spec sheet for the Bosch Professional GWS 18V-8 · Sold without battery or charger
Einhell TP-AG 18/125 CE Q Li
Variable speed, handy for polishing or working soft materials.
| Disc | 125 mm |
|---|---|
| Speed | 3,000-10,500 rpm, variable |
| Safety | Restart protection, soft start, overload protection |
| Weight | 1.7 kg |
| Motor | Brushless |
Official spec sheet for the Einhell TP-AG 18/125 CE Q Li · Sold without battery or charger
| Disc | 125 mm |
|---|---|
| Speed | 9,200 rpm |
| Safety | Electronic kickback protection, dead-man switch |
| Weight | 2.1 kg without battery |
| Motor | Brushless |
Official spec sheet for the Ryobi RAG18BL · Sold without battery or charger
The pros and cons summarise opinions that come up again and again in the reviews and forums linked in the sources. I haven’t tested these tools in person.
What about Milwaukee?
I don’t include it with an Amazon link: its extended guarantee only covers purchases from an authorised distributor. If you already have M18 batteries, look for this model with the official dealer locator.
My pick
DeWalt DCG406 for safety. On any other platform, check yours has kickback and restart protection before you buy.
Sources
- Makita DGA504Z: official spec sheet
- Reviews.co.uk: DGA504Z reviews
- DeWalt DCG406N: official spec sheet
- Bosch Professional GWS 18V-8: official spec sheet
- Einhell TP-AG 18/125 CE Q Li: official spec sheet
- Ryobi RAG18BL: official spec sheet
Specs checked on the manufacturers’ websites on 5 November 2026. I don’t publish prices because they change every day.
More tools
- Combo kits
- Combi drills
- Impact drivers
- Mitre saws
- Circular saws
- Jigsaws
- Multi-tools
- Workshop vacuums
- 18V batteries
No platform yet? How to choose a platform in five questions.