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Ryobi ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder

Ryobi ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder

4.2· 37 ratings

Best price now

$148.97at Home DepotObserved at 9:33 AM

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Our take on the Ryobi ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder

The Ryobi ONE+ HP 18V Brushless 4-1/2 in. Angle Grinder is a cordless grinder that runs on any Ryobi 18V ONE+ battery. Its brushless motor spins at 9,000 RPM and Ryobi rates it at up to 11 amps of corded-like performance. It weighs 4.13 lb and uses a paddle switch with a lockout and a tool-free guard. The best new price is $88.99 at eBay as of November 5, 2026, with 2 stores listing it new.

Best forRyobi 18V ONE+ owners who want a grinder without a new battery platformCutting and grinding metal in the driveway or on a job siteLight fabrication, rust removal and sharpeningBuyers who want a bare tool and already own batteries
Pros
  • Runs on the Ryobi 18V ONE+ batteries many homeowners already own
  • Brushless motor with 9,000 RPM and up to 11 amps of claimed corded performance
  • Paddle switch with lockout and adjustable blade guard
  • 4.13 lb is light enough for one-handed overhead work
  • Bare tool price is low for a brushless grinder
Cons
  • No battery or charger in the box, so the real cost is higher for new users
  • Cordless runtime drops fast under heavy continuous grinding
  • 4-1/2 in. wheels limit it to light-to-medium work, not heavy fabrication
  • Not as powerful as a true 11-amp corded grinder under load

Ryobi ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder prices at every store

  • Home DepotNew

    In stock

    $148.97Observed at 9:33 AM
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Also available at

  • eBayCheck price at eBay

Ryobi ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder price history

Lowest price we've seen: $148.97 on Nov 5 at Home Depot. Tracked across 1 store since Nov 5.

What reviewers say

Ratings average 4.2 out of 5 from 37 ratings, which fits a tool owners like for light jobs and find limited for heavy ones.

Pros
  • Good power for a cordless grinder
  • Light and easy to handle
  • Fits existing ONE+ batteries
Cons
  • Battery drains quickly under load
  • Less grunt than a corded grinder

Specifications

Maximum Speed
9,000 RPM
Power Source
Cordless Electric
Amperage
0.0 A
Voltage
18V
Safety Features
Lockout Power Switch, Blade Guard System
Maximum Rotational Speed
9,000 RPM
Power
Up to 11 Amps of Corded Performance
Motor Type
Brushless
Grinder Type
Angle Grinder
Grinder Brand
RYOBI
Grinder Series
ONE+ HP
Grinder Model Number
PBLAG02B-A01302
Grinding Wheel Size
4-1/2 in.
Applications
Grinding, Cutting, Flush cutting
Battery Voltage
18V
Battery Capacity
No Battery
Battery Platform
ONE+ HP, RYOBI 18V ONE+ System
Battery Type
Lithium Ion
Battery Included
No
Weight
4.13 lb
Height
5 in
Length
12 in
Width
5 in
Switch Type
Paddle Switch

Questions and answers

Is the Ryobi ONE+ HP angle grinder worth it?
Yes if you already own Ryobi 18V batteries and do light cutting and grinding. At $88.99 at eBay as of November 5, 2026, it is a cheap way to add a brushless grinder to an existing kit. If you grind for long stretches, a corded grinder is the better tool.
Does it come with a battery and charger?
No. This is a bare tool, so you need a Ryobi 18V ONE+ battery and charger. Any ONE+ battery works, but a 4Ah or larger pack holds up better under load.
How does it compare to the older Ryobi P421?
The HP brushless model has more power, a paddle switch and a tool-free guard. The older brushed grinder is cheaper but slower and heavier on batteries.
What size wheels does it take?
It uses 4-1/2 in. wheels with a 7/8 in. arbor, the common size for angle grinders. It handles grinding, cutting and flush cutting discs.
When is it cheapest?
Bare-tool prices tend to dip during Ryobi promotions and holiday sales. The best new price was $88.99 at eBay as of November 5, 2026.
Where is the Ryobi ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder cheapest?
At Home Depot, for $148.97, as of our latest check.
What do buyers say about the Ryobi ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder?
Rated 4.2 out of 5 from 37 ratings.
Where can I buy the Ryobi ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder?
2 stores we checked sell it, including Home Depot, eBay.

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