Rank #4 in Best Angle Grinder 2026: 10 Ranked, and the Wattage Claims That Fail
Bosch Professional GWS 18V-8 Cordless Angle Grinder, 125mm
Price and rating as shown on Amazon when we collected them. Both change.
The Bosch Professional GWS 18V-8 is a cordless 125mm angle grinder from Bosch's Professional 18V System, and it takes fourth place in this guide. Its Amazon listing gives the Wattage as 800 watts and the Horsepower as 800 — the same number sitting in two fields that measure different things. One of those two entries has to be wrong, and the listing never says which. What it does state elsewhere is plain enough: 18 volts DC on the Voltage line, and a Style line reading 'Without battery/charger'.
The 4.7 score comes from 489 ratings, and that is what holds the GWS 18V-8 where it is. The listing puts the tool at 1.22 kg and describes a compact, lightweight design with a slimmed-down grip, aimed at light cutting work off batteries you already own. Everything on this page — the price, the rating, the weight, the scope of supply — is taken from the Amazon listing as it stands, not from any testing of ours.
How those 489 ratings break down
An average hides its own shape. This is the spread behind the 4.7 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £89.44 |
|---|---|
| Customer rating | 4.7 out of 5 from 489 ratings |
| Power source | Battery Powered, 18 Volts (DC) |
| Wattage | 800 watts |
| Horsepower (as listed) | 800 |
| Item weight | 1.22 kg |
| Style | Without battery/charger |
| Best Sellers Rank | 20 in Angle Grinders (17,100 in DIY & Tools) |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“I've never been disappointed by Bosch Blue Professional Tools and this angle grinder was no exception. I used it to cut off ribbed nails when replacing an old roof rather than try to extract them. Excellent tool! I'd recommend a 5 amp hour battery as it draws a lot of power.”
Verified purchase“My old Bosch18v angle grinder started to only work intermittently, but i have had it for many years and use it a lot, its something I use at least a few times a week, so I really can't be without one.As I already have the batteries and charger I just ran a search and found this one, I thought it was a fair price, its much lighter and slightly smaller than the old one, which is a positive and its brushless, its so smooth and quiet while doing the same job as the old one, so I am very happy with it so far.”
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
Does the Bosch GWS 18V-8 come with a battery and charger?
No. The listing's own Style field says 'Without battery/charger', and the scope of supply names only a backing flange, locking nut, two-hole spanner, auxiliary handle and protective guard.
How much does the Bosch GWS 18V-8 weigh?
The listing gives 1.22 kg for the tool.
What disc diameter does the Bosch GWS 18V-8 take?
125mm, as stated in the product name.
What power does the listing claim for it?
The Wattage field reads 800 watts and the Horsepower field reads 800 — the same figure in two different units, on an 18V battery tool.
How is the Bosch GWS 18V-8 rated by buyers?
4.7 out of 5 from 489 ratings, per the listing.
What battery system does it use?
Bosch's Professional 18V System, at 18 volts DC.
Comments
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