The 6 Best Cordless Angle Grinders of 2026

The M18 battery platform is the first reason to look at the Milwaukee 2880-20. It is an 18-volt, 4-1/2- to 5-inch grinder that runs on the same packs as Milwaukee's drills and impact drivers, and it uses a 5/8-11 spindle for common grinding accessories. The no-lock paddle is a deliberate choice: you hold it down for the tool to run, and it stops when you let go.

We like the extra 5-inch capacity more than we expected. It gives you a little more reach with a cutting wheel and makes the tool feel less strained in light surface prep. The anti-vibration side handle is another detail that earns its keep during longer grinding sessions, and the electronic clutch and overload protection are the kind of safety net you want on a grinder. The trade-off is weight: at 5 pounds, it is heavier than the DEWALT, and the no-lock paddle takes some getting used to if you are coming from a slide switch.

Battery life is the usual cordless-grinder caveat. With a compact pack, the 2880-20 drains quickly under load; with a high-capacity M18 pack, it has enough stamina for real work. The 5-inch capacity is worth the extra battery demand when you need reach, but it is not the tool for a long overhead session. For M18 users who want one grinder for cutting and light grinding, it is the pick.

The flathead 2886-20 is the better second Milwaukee if you need to reach into corners; this one is the all-round M18 choice. For a farm or trailer toolbox, the 5-inch capacity and brake make it the one we reach for first.

The Makita XAG04Z arrives with more in the box than most bare tools here: a 5-inch cut-off wheel guard, a tool-less wheel guard, an ultra-thin cut-off wheel, an INOX grinding wheel, and a wrench. That matters if you are buying your first grinder and do not want to order accessories before you can make a cut.

The tool itself is an 18-volt, 4-1/2- to 5-inch grinder with a brushless motor and Makita's Automatic Speed Change, which adjusts speed and torque as the load changes. Active Feedback-sensing Technology cuts the motor if the wheel is suddenly forced to stop, a useful safety feature in bind-ups. The body is compact for a 5-inch-capable tool, and the tool-less guard is easy to reposition.

We think the XAG04Z makes the most sense for someone already invested in Makita 18V LXT batteries. The included wheels are a genuine convenience, and the automatic speed control gives it a smooth, predictable feel in light grinding. Runtime is the catch: compact packs fade fast under load, so larger batteries are part of the real cost. Durability is the other question mark, so buy from a seller with a straightforward return policy and give it a few real jobs before you rely on it.

The CRAFTSMAN CMCG400B is the lowest-priced route into cordless grinding here, and it makes no apology for being a light-duty tool. It is a 20-volt, 4-1/2-inch grinder with a 9,000-rpm motor and a three-position handle. For sharpening a mower blade or cutting a few bolts, it gets you working without a cord and without a big outlay.

We found the contoured grip easy to control for short jobs. The 9,000-rpm speed is respectable, and the cast metal gear housing should help it shed heat. The three-position handle gives you a comfortable grip at different angles, and the tool-free guard is simple to move.

Where it earns its place is around a small farm or shop where the grinder comes out for a quick job. It is not the tool we reach for when a project turns into an afternoon of cutting, but for occasional sharpening, light cutting, and quick cleanup, it does the job for a lot less money than the premium picks.

The flathead shape is the whole point of the Milwaukee 2886-20. The motor and gearcase sit in a low-profile body just 2.78 inches wide, so the wheel can reach into corners and along edges where a standard grinder's bulky head gets in the way. It is still a 5-inch, 18-volt M18 FUEL grinder with a paddle switch and a rapid stop brake.

We like it for exactly that job. In corner work, the low head lets you keep the wheel flat instead of tipping the tool and fighting the guard. The rapid stop is genuinely useful when you are making short, precise cuts and setting the tool down between them. What it is not is a general-purpose grinder: the special body and 5-inch wheel are built for access, not for every light job.

For a farm or shop that already runs M18 batteries and regularly cuts in tight spots, the flathead earns its place. For everyone else, the standard Milwaukee 2880-20 or the DEWALT DCG413B will do more of the everyday work. Think of this one as a second grinder, not the only one on the shelf.

The Ryobi R18AG-0 is the grinder you buy when you already own One+ batteries and the job is small. It is an 18-volt tool with a 9,000-rpm motor and a simple, traditional layout. That speed looks competitive on paper, and for light cutting and sharpening it is enough to get the work done without dragging out an extension cord.

We found it easy to handle for short jobs around the yard, and the One+ battery swap is the same as every other Ryobi tool. It is happiest with thin cut-off wheels and light pressure, and that is how we used it. The simple layout also makes it easy to hand to someone who does not use a grinder every week.

Where the Ryobi makes sense is as a second grinder for a One+ household, or a first grinder for occasional jobs where the battery is already on the shelf. The 9,000-rpm motor and simple handling are enough for quick cuts and light cleanup, and the low entry cost is the real draw. Buy it for the battery platform and the occasional job, not as your only tool for a long fabrication day.