Cordless

Cordless F3 Grinder

Grinder
Battery
3.59 pounds
18 volts

3.9/ 5 on Amazon108Amazon ratings100+bought last month3.7ProductDome score

Medium confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forBuy if you need grinding power in a location without a nearby power outlet.

A cordless 18V grinder running at 8000 RPM, a reasonable pick for portable grinding tasks where a cord is not practical.

As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.

ProductDome scorecard

How it ranks among the 150 grinders we track

3.7/ 5ProductDome scoreMedium confidence

Owner satisfaction · 56% of scorecategory median 4.6★4.0

3.9★ across 108 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 256 ratings2.5

108 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score2.7

100+ bought on Amazon last month.

Data quality · 11% of score3.8

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 150 grinders we track - how the scorecard works · full grinders data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

The Cordless F3 is an 18V battery-powered grinder running at 8000 RPM, weighing 1.63 kilograms, built for cutting, grinding or surface prep away from a power outlet.

Running on battery power rather than a cord, this grinder trades outlet dependence for the weight of an onboard battery, and the 1.63 kilogram figure likely reflects that battery-equipped weight. Disc size is not listed in this entry, so confirm the wheel diameter it accepts before buying replacement discs.

18V cordless grinder
8000 RPM
Weighs 1.63 kilograms
Rated 3.9 from 108 reviews

Who it's for

Fits users who need grinding or cutting power in spots without easy access to an outlet. Less suited to continuous heavy-duty grinding, where a corded model avoids battery runtime limits.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

Battery power reaches spots without an outlet
8000 RPM listed for cutting and surface work

What to check first

Disc diameter is not specified
Battery runtime is not listed

Performance notes

At 8000 RPM on an 18V battery platform, the F3 is built for portable cutting and surface work. Disc diameter is not listed, so confirm which wheel size it takes before stocking replacement discs.

Specifications

Brand	Cordless
Model	F3
Power Source	Battery
Item Weight	3.59 pounds
Voltage	18 volts
Speed	8000 rpm

How it compares

This product against the closest alternatives we track in grinders.

Product	Amazon rating	Ratings	ProductDome score
Cordless F3 GrinderThis product	3.9 / 5	108	3.7 / 5
DEWALT DCG413B GrinderDeWalt	4.8 / 5	9,600	4.6 / 5
Milwaukee 2880-20 GrinderMILWAUKEE	4.8 / 5	2,400	4.5 / 5
AVID MW590 GrinderAVID	4.5 / 5	6,100	4.4 / 5
Makita 9557PBX1 GrinderMAKITA	4.8 / 5	3,960	4.4 / 5

Frequently asked

Questions about the Cordless F3

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

What power source does the Cordless F3 use?

An 18V battery, per the listing.

How fast does it spin?

8000 RPM.

How much does it weigh?

1.63 kilograms.