Product description
Aiderar 4-1/2″ Brushless Cordless Angle Grinder Tool 
1 BARE-TOOL 2 EXPLORING THE TOOL
DIY POWER AT YOUR FINGERTIPS: Take on home repairs, small metal projects, and light cutting with ease. Compact, cordless, and ready whenever you are—your go-to tool for quick, hassle-free DIY success!
FOR DEWALT 20V MAX USERS – THE COST-EFFECTIVE BARE-TOOL SOLUTION: This cordless angle grinder tool is specifically designed for DeWalt 20V MAX batteries and chargers (sold separately). As a “Tool Only” product, this angle grinder cordless delivers full power by integrating perfectly with the tools you already own, saving you from the cost of duplicate batteries. It’s the smartest way to expand your capabilities. [Pro Tip: For optimal performance, especially under heavy load, we recommend using a 4.0Ah(4000mAh) or higher capacity battery for DeWalt 20V MAX tools.]
BRUSHLESS MOTOR POWER & MAINTENANCE-FREE OPERATION: Get more done with less downtime. The brushless motor of this battery angle grinder delivers longer runtime, superior durability, and consistent power under load. Best of all, forget about replacing carbon brushes forever—saving you both time and money!
2 RUGGED METAL SAFETY GUARDS: Switch tasks in seconds with both a standard guard for grinding and a half-guard for cutting. Pair correctly for safer, smoother work: a). GRINDING GUARD + SANDING/FLAP DISC; b). CUTTING GUARD + CUTTING WHEEL for fast, clean cuts.
3-SPEED VERSATILITY FOR ALL JOBS: The 3 speed settings of this cordless grinder cover everything from light sanding to heavy-duty metal cutting. Gears 1–2: grinding, rust removal, sanding, wire drawing, weld finishing. Gear 3: powerful metal cutting.
VARIABLE SPEED TRIGGER & SOFT START: Take full control of your work with the professional variable-speed trigger, paired with soft start technology, the variable speed angle grinder powers up smoothly—no jerky starts like with basic slide switches, giving you complete control from the moment you switch it on, ensuring a smooth, safe start every time—especially important when working at height or in tight spaces.
WIDE COMPATIBILITY & PACKAGE CONTENTS: With a 5/8″-11 spindle thread, this 4 1/2 angle grinder works with most 4-1/2″ cutting wheels, flap discs, and grinding attachments on the market.
WHAT YOU GET: 1x Aiderar Grinder Power Tool (NO Battery/charger), 1x Standard Guard(Guard for Grinding), 1x Half Guard(Guard for Cutting), 1x Spare Flange Set, 1x Ergonomic Design Multi-Angle Leverage Wrench, 1x Side Handle, 2x Sanding Wheels, 2x Cutting Wheels, 2x Flap Discs, 1x User Manual—plus our responsive customer support.
michelle –
Solid cordless grinder and easy handle
Bought this because I’m doing some home remodeling and small projects by myself. It’s very easy to handle and works great. I already have a DeWalt drill, so I just used the same battery and it fit perfectly. The tool feels solid and has good power for small cutting and grinding jobs. Overall very convenient for DIY projects.
Bernice –
Great Value and Powerful Performance!
Very happy with this purchase! It works perfectly with my DeWalt 20V Max battery and has plenty of power for cutting and grinding metal. The brushless motor runs smooth, and the 3-speed control is a great feature depending on the job.I especially like the included accessories — the extra cutting and grinding discs, guard, and handle are a big bonus and make it ready to use right out of the box. Solid build quality and excellent value for the price. Highly recommend!
LeRoy Foreman –
Don’t purchase
When a disk was installed on this machine it didn’t have enough power to grind steel on a flat surface it would start and then quit .Plus it had a bad sound in motor like it had no lubrication. Every poor quality
Ray Sulich Jr. –
Nice grinder, questionable bearing quality. I will update with more time in use.
Very nice grinder. It’s a bit crunchy sounding at startup but time will tell if it is due to bad bearing or just is the way it is. The implementation of variable speeds is different than I’ve seen before so I can’t say as to if I like it or not. The use of Dewalt batteries was a good one from multiple aspects. Dewalt makes good tools so the odds are a well equiped shop already have a tool that uses the same battery as this one. This sort of thinking seems to be becoming more common and is a real cost savings for consumers. The ability to use grinding wheels, disks and the thick variety grinding disks is super nice and is accomplished by use of one of two width shields to protect the user. The fastening hardware is a nice touch as well as the really nice and high quality tool provided to tighten down the disks. It comes with a wild variety of disks and stones makes the tools ready to use right out of the box. The soft storage “Bag” is nice too. Many tools like this come with hard cases which are also nice but definately take up more room in an already crowded shop.
srg2022 –
It’s really good.
After using this product, I really liked these six aspects of it:1. Cordless: The cordless design is very convenient to use; a cord would be very inconvenient;2. Protective cover: Without a protective cover, metal fragments could fly out during cutting and injure the operator. With the protective cover, this situation is avoided and safety is increased;3. You can lock the speed: This function avoids the need to keep pressing the switch key during cutting, which makes it much easier;4. Its speed can be set according to different uses;5. It can clearly display battery power and speed6. Complete accessories
Daniel Chipman –
Works Well for Marble Polishing
I bought this mainly for grinding and polishing marble surfaces. It has strong power and runs smoothly. The 3-speed control helps adjust for different polishing stages. Cordless design makes it easy to use without dealing with cords. Overall, a reliable tool for stone surface work.
Rick Wallingford –
Good for light work
I never know how much to incorporate pricing into my reviews. Given how inexpensive this is compared to the name brand version, I could see rating this higher, but as it is, I’m rating it 3-stars purely on merit…The Aiderar cordless angle grinder is a solid little tool overall, designed for DeWalt 20V batteries (not included obviously). The battery slides in and out just like an OEM tool, it powers up smoothly, and the brushless motor feels efficient for basic cutting, grinding, and cleanup work. It’s compact, lightweight, and well-balanced in the hand, which helps a lot with comfort and wrist fatigue. The 3-speed control is genuinely useful for dialing things back on lighter tasks, and the battery/speed indicators are a nice touch for keeping track of what’s going on while you work.I’d consider this more of a light-duty grinder than something you’d want for constant heavy grinding or all-day mechanic work. The RPM feels a bit slower than my other grinder. And while it still gets the job done, it doesn’t feel like a powerhouse. The quick-release guard is convenient, but removing and reinstalling it isn’t quite as smooth as it could be. The included spanner is decent and you’ll definitely want to snug the discs down properly. The carry bag is nice to have, but it’s pretty cheap and doesn’t fit well if you leave the guard/handle installed (and the battery needs to come off). Overall, it’s a handy, portable grinder for occasional shop/hobby use and jobs where cordless convenience matters. It just isn’t the tool I’d pick for heavy daily grinding.Even as a light-duty grinder, it’s important to note that it still puts a big draw on your batteries. If you’re using cheap 3rd-party batteries, you may have problems with the tool stopping after just a minute or two of work. Just like with the battery operated saws and leaf blowers, you’ll get better results with the FlexVolt batteries or an original OEM DeWalt battery.
Ben Li –
It works good with my Dewalt battery
The grinder works good with my Dewalt battery, I was going to buy a Dewalt grinder but the price around $200 plus tax, this grinder price not even 1/4 of Dewalt grinder, I got Dewalt tools and battery that’s why I bought this grinder because it works with my Dewalt battery. I changed my shower valve from 2 handles to one handle, I had to use grinder to cut the wall, it worked perfectly and safely. When you off the power it stops fully in 2 seconds. Also the package come with 4 blades it’s very valuable.if you like me have Dewalt tools and battery you better have one with you.