Looking for the best battery grinder that gets the job done without a cord? I’ve tested several for metal cutting and wood polishing, and I’ll share my top picks that offer both speed and safety.
Battery grinders make work smooth. They are easy to use and great to carry. You don’t need a power cord.
I’ve used battery grinders for cutting metal and polishing wood. The speed and safety they offer surprised me.
In this guide, I will help you pick the best one for your needs. Let’s find the grinder that saves time and does the job right.
List of Top 10 Battery Grinders
| Image | Title | Best For | Price |
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AOBEN Cordless Angle Grinder 4-1/2 inch, 21V Battery Grinder Tool, Power Electric Grinders, Brushless Motor, 2×4.0Ah Battery & Fast Charger, for Cutting, Griding, Polishing |
Perfect for DIY fans, pros, and home fixers who want quick, clean cuts and grinds with no cord. Great for metal, tile, rust, and prep work with long battery life and strong brushless power. |
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DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder, Bare Tool Only (DCG412B) |
Perfect for builders, metalworkers, and DIY fans who need power, speed, and easy control in one tool. It makes tough jobs fast and simple. |
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Milwaukee 2880-20 M18 FUEL Brushless Lithium-Ion 4-1/2 in. / 5 in. Cordless Small Angle Grinder with No-Lock Paddle Switch (Tool Only) |
This tool is perfect for people who need a strong, safe, and easy-to-handle grinder. It’s great for those who work with metal, stone, or other hard materials and want less vibration and more control. |
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WORKPRO 20V Cordless Angle Grinder Kit, 4-1/2 Inch, Lightweight Angle Grinder Tool 4.0Ah Lithium-Ion Battery & Fast Charger, Ergonomic Button Position for Reducing Hand Pressure |
This tool is perfect for DIY lovers, metal workers, or anyone who needs a lightweight, powerful grinder that’s easy to use and take anywhere. It makes cutting and grinding smooth and simple. |
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SEESII Mini Angle Grinder 21V, 3 Inch Brushless Angle Grinder Cordless 19000 RPM with 2PCS 2.0A Battery & 7pcs Cutting Discs, 210W Power Electric Tool for Metal Wood Polishing Rust Removal |
This tool is perfect for DIY lovers, contractors, and metal or wood workers who need strong performance and easy use. It’s great for fast cutting, smooth polishing, and quick repairs at home or on the job. |
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Mamba Loader XL 2g Green USB Electric Herb Grinder. Small Portable Metal Herbal Machine & Spice Mill for the Kitchen |
This grinder is perfect for anyone who loves fresh herbs and wants to save time in the kitchen. It’s great for quick prep, easy cleaning, and no mess. |
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Mamba Original 1g Gray USB Electric Herb Grinder. Small Portable Metal Herbal Grinder Machine & Spice Mill for the Kitchen |
Busy cooks and herb lovers will love how fast and easy this grinder works. It’s perfect for anyone who wants fresh flavor with zero mess. |
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Mamba Original 1g Black USB Electric Herb Grinder. Small Portable Metal Herbal Machine & Spice Mill for the Kitchen |
Perfect for herb lovers and home cooks who want quick, clean, and easy grinding. This smart little grinder makes seasoning fast and mess-free. |
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Cordless Angle Grinder 4-1/2″, Brushless Metal Grinder 12000 RPM, Power Angle Grinder with 2 * 4.0Ah Batteries & 3 Cutting Wheels, Electric Grinder Tool Kit for Cutting, Grinding |
Made for DIY users, metal pros, and home fixers who want fast, cordless, brushless power. Great for job sites and tight spots, with 3 speeds and 2 long life batteries. |
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Cordless Brush Angle Grinder Kit, 19500rpm Mini Electric Angle Grinding Tool with 2pcs 16.8V 2000mAh Batteries and 5-Cutting Discs, Grinder Handheld Cutter for Metal Wood |
Perfect for DIY users, pros, and makers who cut or grind metal, tile, or wood. Great if you need a light, cordless tool for quick jobs anywhere. |
Detailed Reviews
Our Best Battery Grinders guide is clear and trusted. We use expert tests and real owner feedback. You get simple picks, key specs, and true value. Ready to see which one fits you best?
1. AOBEN Cordless Angle Grinder 4-1/2 inch, 21V Battery Grinder Tool, Power Electric Grinders, Brushless Motor, 2×4.0Ah Battery & Fast Charger, for Cutting, Griding, Polishing
The AOBEN Cordless Angle Grinder is built for tough jobs and smooth cuts. Its brushless motor gives it strong power and a long life.
Switch between 3 speeds with a tap. Use it for cutting, sanding, or polishing. You can work anywhere with no power cord.
It comes with 2 batteries and fast charging. The wheel guards keep you safe. The tool kit gives you everything you need.
| Pros | Cons |
|---|---|
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Perfect For:
Perfect for DIY fans, pros, and home fixers who want quick, clean cuts and grinds with no cord. Great for metal, tile, rust, and prep work with long battery life and strong brushless power.
Ready to Purchase?
2. DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder, Bare Tool Only (DCG412B)
Meet the DEWALT 20V MAX cordless angle grinder. It is a 4-1/2 inch Bare Tool Only unit.
It has an 8,000 rpm motor for fast cuts. The tool-free guard and Quick-Change Wheel Release save time. The 2-finger trigger, lock-off, and 2-position handle boost control.
| Pros | Cons |
|---|---|
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Perfect For:
Perfect for builders, metalworkers, and DIY fans who need power, speed, and easy control in one tool. It makes tough jobs fast and simple.
Ready to Purchase?
3. Milwaukee 2880-20 M18 FUEL Brushless Lithium-Ion 4-1/2 in. / 5 in. Cordless Small Angle Grinder with No-Lock Paddle Switch (Tool Only)
This grinder is built for fast, tough jobs. The electronic clutch helps stop kickbacks. It works great with all M18 batteries.
Keep it cool under pressure. The overload protection boosts motor life. The anti-vibration handle makes it safe and smooth.
Use it with standard grinding tools. It’s made for everyday work. Grab it and go.
| Pros | Cons |
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Perfect For:
This tool is perfect for people who need a strong, safe, and easy-to-handle grinder. It’s great for those who work with metal, stone, or other hard materials and want less vibration and more control.
Ready to Purchase?
4. WORKPRO 20V Cordless Angle Grinder Kit, 4-1/2 Inch, Lightweight Angle Grinder Tool 4.0Ah Lithium-Ion Battery & Fast Charger, Ergonomic Button Position for Reducing Hand Pressure
Go cordless and cut with smooth, strong power. The 20V 4.0Ah battery and fast charger last.
Spin at 7500 RPM with cooling for steady work. It is lightweight at 3.5 lb with a 3-position handle. Enjoy quick-change swaps and a full kit.
| Pros | Cons |
|---|---|
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Perfect For:
This tool is perfect for DIY lovers, metal workers, or anyone who needs a lightweight, powerful grinder that’s easy to use and take anywhere. It makes cutting and grinding smooth and simple.
Ready to Purchase?
5. SEESII Mini Angle Grinder 21V, 3 Inch Brushless Angle Grinder Cordless 19000 RPM with 2PCS 2.0A Battery & 7pcs Cutting Discs, 210W Power Electric Tool for Metal Wood Polishing Rust Removal
Meet the SEESII Mini Angle Grinder. It is lightweight, only 1.85 lbs. The brushless motor makes 210W and 19000 RPM.
It is cordless with two 21V 2.0Ah batteries. 7 3-inch discs and safety features give fast, clean work.
| Pros | Cons |
|---|---|
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Perfect For:
This tool is perfect for DIY lovers, contractors, and metal or wood workers who need strong performance and easy use. It’s great for fast cutting, smooth polishing, and quick repairs at home or on the job.
Ready to Purchase?
6. Mamba Loader XL 2g Green USB Electric Herb Grinder. Small Portable Metal Herbal Machine & Spice Mill for the Kitchen
Grind herbs fast with the Mamba Loader XL. It’s small, strong, and simple to use. Prep up to 2 grams at once with just one hand.
The metal grinder head has sharp teeth. It runs on a USB-C rechargeable battery.
Keep your space clean with its clear spout and pull-up loader. It’s great for oregano, basil, and more. Makes a smart gift for anyone who loves cooking.
| Pros | Cons |
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Perfect For:
This grinder is perfect for anyone who loves fresh herbs and wants to save time in the kitchen. It’s great for quick prep, easy cleaning, and no mess.
Ready to Purchase?
7. Mamba Original 1g Gray USB Electric Herb Grinder. Small Portable Metal Herbal Grinder Machine & Spice Mill for the Kitchen
Meet the Mamba Original 1g USB Electric Herb Grinder. It has sharp metal teeth, a sleek metal head, and holds 1 g for one hand use.
This automatic grinder gives zero spills and no waste. Use it for basil, coriander, oregano, and more, not for peppercorns, beans, shells, or nuts.
The 1200 mAh battery gives 3 Nm for a fast, fresh grind. A smooth rocker switch makes it jam‑free and strain‑free, and it comes with a USB‑C cable. The clear spout, half‑funnel, and extras keep it clean, neat, and easy to wash.
| Pros | Cons |
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Perfect For:
Busy cooks and herb lovers will love how fast and easy this grinder works. It’s perfect for anyone who wants fresh flavor with zero mess.
Ready to Purchase?
8. Mamba Original 1g Black USB Electric Herb Grinder. Small Portable Metal Herbal Machine & Spice Mill for the Kitchen
This USB electric herb grinder is quick. Its metal head grinds spices with one hand.
Enjoy clean, jam-free use with the rocker switch. The 1200 mAh battery gives strong 3 Nm torque. Dispense with a clear spout and easy clean parts.
| Pros | Cons |
|---|---|
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Perfect For:
Perfect for herb lovers and home cooks who want quick, clean, and easy grinding. This smart little grinder makes seasoning fast and mess-free.
Ready to Purchase?
9. Cordless Angle Grinder 4-1/2″, Brushless Metal Grinder 12000 RPM, Power Angle Grinder with 2 * 4.0Ah Batteries & 3 Cutting Wheels, Electric Grinder Tool Kit for Cutting, Grinding
It has a brushless motor with 12000 RPM. You get two 4.0Ah batteries for long run time.
Pick 3 speeds: 12000, 8000, or 6000 RPM. The cordless design, safety cover, lock switch, and 2-position handle make work safe. It fits 4-1/2 in and 5 in discs.
| Pros | Cons |
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Perfect For:
Made for DIY users, metal pros, and home fixers who want fast, cordless, brushless power. Great for job sites and tight spots, with 3 speeds and 2 long life batteries.
Ready to Purchase?
10. Cordless Brush Angle Grinder Kit, 19500rpm Mini Electric Angle Grinding Tool with 2pcs 16.8V 2000mAh Batteries and 5-Cutting Discs, Grinder Handheld Cutter for Metal Wood
Cut, grind, and polish anywhere with this cordless angle grinder. It runs on a powerful 16.8V battery, so there are no tangled cords. The 19500rpm speed makes tough jobs fast and easy.
The rubber grip handle feels great in your hand. It’s strong, light, and perfect for one-hand use.
| Pros | Cons |
|---|---|
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Perfect For:
Perfect for DIY users, pros, and makers who cut or grind metal, tile, or wood. Great if you need a light, cordless tool for quick jobs anywhere.
Ready to Purchase?
Buying Guide
Battery grinders save time and make work smooth. I once cut through thick metal without strain, and the clean finish amazed me.
- Power and Speed: A strong motor and high RPM give faster cuts. Low speeds are better for control and smooth finishes.
- Battery Life: A large-capacity battery lets you work longer. Extra batteries mean no waiting for charging.
- Weight and Size: A light grinder is easy to handle. A compact design fits in tight spaces.
- Safety Features: Wheel guards and lock switches protect you. Good grip handles help avoid slips.
- Versatility: Choose a model that cuts, sands, and polishes. Multiple speed options add more control.
- Build Quality: A brushless motor lasts longer and runs cooler. Solid housing resists damage.
- Ease of Use: Quick-change wheels save time. Tool-free adjustments make setup simple.
- Comfort: Anti-vibration handles reduce strain. Ergonomic design makes long jobs easier.
- Accessories: Kits with extra wheels and chargers give better value. Carry cases keep tools safe and ready.