DeWalt 20V MAX owners get two bare tool options: VERVEWAVE for finer speed control and AIDERAR for a lighter safety focused build. If you need batteries included, AOBEN and FULLYEA both ship with two 4.0Ah packs, while CRAFTSMAN stays on its own V20 platform. The main tradeoff is battery compatibility versus kit completeness: bare tools save money if you already have DeWalt batteries, while full kits cost more but work out of the box.
AOBEN 4 to 1/2 inch Cordless Angle Grinder
Best for: Buyers who want two batteries and two wheel guards in one kit
- Brushless motor and three speeds up to 9500 RPM.
- Includes two 21V 4.0Ah batteries and a charger.
- Comes with regular and half covered wheel guards plus cutting, grinding, and sanding wheels.
Keep in mind: Battery packs from other brands are not compatible, so you stay within this kit.
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FULLYEA 4 to 1/2 inch Cordless Angle Grinder
Best for: Users who want the highest top speed and a fast charger
- Brushless motor reaches 12,000 RPM no load speed.
- Three speed settings from 0 to 12,000 RPM.
- Two 21V 4.0Ah batteries with power indicator and a fast charger.
Keep in mind: Dual nonslip handles are included, but the listing does not state spindle thread size.
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VERVEWAVE 4 to 1/2 inch Cordless Angle Grinder
Best for: DeWalt 20V MAX owners who want six speed steps
- Tool only, compatible with DeWalt 20V MAX batteries.
- Brushless motor with six variable speeds from 3000 to 8500 RPM.
- Includes 11 cutting and grinding wheels and a lock switch.
Keep in mind: Battery and charger are not included, so it only works if you already own DeWalt 20V MAX batteries.
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AIDERAR 4 to 1/2 inch Cordless Angle Grinder
Best for: DeWalt users who want a soft start and lock off trigger
- Tool only for DeWalt 20V MAX batteries, not compatible with DCB6XX 20V/60V MAX.
- Brushless motor with three speeds and metal grinding and cutting guards.
- Trigger switch with soft start and lock off safety design.
Keep in mind: Battery and charger are not included, and the listing recommends a 4.0Ah or higher battery for heavy loads.
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CRAFTSMAN V20 Cordless Angle Grinder Kit
Best for: Buyers already on the Craftsman V20 battery platform
- Runs at 8,500 RPM and includes a battery and charger.
- Cast metal gear housing dissipates heat.
- Tool free guard position and 3 position handle.
Keep in mind: Listing does not specify battery capacity or number of batteries included, so check the kit contents.
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RhovixStar 3/8 inch 16 Cordless Angle Grinder
Best for: Users who want a 3/8 to 16 spindle for wider accessory compatibility
- Brushless motor with four adjustable speeds up to 9000 RPM.
- Includes two 4.0Ah batteries and a fast charger.
- Spindle thread is 3/8 inch 16, unlike standard 4 to 1/2 inch grinders.
Keep in mind: Weighs under 4 lbs but the listing does not give an exact weight, so confirm before buying.
Check price on Amazon ↗Product names and images come from the Amazon listings and are rechecked against them (last checked Nov 8, 2026). The highlights restate each listing's own bullet points as published on Nov 8, 2026. Prices change often, so we do not show them. These are affiliate links: as an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Battery Platform and Kit Contents
Battery compatibility decides whether a grinder works with what you already own. VERVEWAVE and AIDERAR are bare tools for DeWalt 20V MAX batteries, which saves money for existing DeWalt users but leaves others without a power source. AOBEN, FULLYEA, and RhovixStar include two 4.0Ah batteries and a charger, so they run out of the box but lock you into their own battery packs.
CRAFTSMAN sits on its own V20 platform and includes a battery and charger, but the listing does not state the battery capacity or how many batteries come in the kit. If you already have V20 batteries, this kit may duplicate them, so check the listing before buying.
The table below compares battery platform, included batteries, charger, and spindle size as stated in each listing. A blank space means the listing does not state that detail.
- AOBEN: two 21V 4.0Ah batteries, charger, 5/8 to 11 spindle.
- FULLYEA: two 21V 4.0Ah batteries, fast charger, spindle not listed.
- VERVEWAVE: no battery or charger, compatible with DeWalt 20V MAX, spindle not listed.
- AIDERAR: no battery or charger, compatible with DeWalt 20V MAX (not DCB6XX), 5/8 to 11 spindle.
- CRAFTSMAN: battery and charger included, V20 platform, spindle not listed.
- RhovixStar: two 4.0Ah batteries, fast charger, 3/8 to 16 spindle.
| Short name | Battery platform | Included batteries | Charger included | Spindle size |
|---|---|---|---|---|
| AOBEN 4 to 1/2 inch Cordless Angle Grinder | AOBEN 21V | 2x 4.0Ah | Yes | 5/8 inch 11 |
| FULLYEA 4 to 1/2 inch Cordless Angle Grinder | FULLYEA 21V | 2x 4.0Ah | Yes (fast) | Not listed |
| VERVEWAVE 4 to 1/2 inch Cordless Angle Grinder | DeWalt 20V MAX | None (tool only) | No | Not listed |
| AIDERAR 4 to 1/2 inch Cordless Angle Grinder | DeWalt 20V MAX | None (tool only) | No | 5/8 inch 11 |
| CRAFTSMAN V20 Cordless Angle Grinder Kit | Craftsman V20 | Included (quantity not listed) | Yes | Not listed |
| RhovixStar 3/8 inch 16 Cordless Angle Grinder | RhovixStar 21V | 2x 4.0Ah | Yes (fast) | 3/8 inch 16 |
Motor and Speed Choices
Every grinder here uses a brushless motor, but the top speeds and speed steps differ. FULLYEA reaches 12,000 RPM, the highest stated no load speed, with three settings up to that limit. AOBEN and RhovixStar top out at 9,500 and 9,000 RPM respectively, with three and four speed settings.
VERVEWAVE offers the finest control with six speeds from 3,000 to 8,500 RPM, letting you match speed to material. AIDERAR has three speeds, while CRAFTSMAN runs at a fixed 8,500 RPM with no variable speed mentioned.
Higher RPM does not always mean better results. Lower speeds suit fine sanding or soft materials, while high speeds handle fast cutting and rough grinding. Match the speed range to the tasks you do most often.
Guards, Handles, and Safety
Wheel guards protect you from sparks and debris. AOBEN and AIDERAR include two guards: a regular grinding guard and a half guard for cutting. FULLYEA has a rotating safety guard, and RhovixStar includes one wheel guard. VERVEWAVE does not list a guard in its package, so check the listing before buying if you need one.
Handle positions affect control. AIDERAR and RhovixStar offer adjustable auxiliary handles for left- and right handed users. FULLYEA includes dual nonslip handles, and CRAFTSMAN has a 3 position handle. VERVEWAVE has a 3 position nonslip handle, and AOBEN includes an auxiliary handle.
Switch design changes how the tool operates. VERVEWAVE uses a lock switch that stays on, while AIDERAR uses a trigger switch that must be held continuously. AIDERAR also adds soft start and a lock off button to prevent accidental starts. If you prefer a tool that stops when released, AIDERAR's trigger design may suit you.
What to Check Before Buying
Confirm the battery platform matches what you own or plan to buy. Bare tools only work with compatible batteries, so buying one without a charger and batteries means extra cost. Check the spindle size if you have existing wheels: 5/8 to 11 is common for 4 to 1/2 inch grinders, while RhovixStar uses a 3/8 to 16 thread.
Look at the included accessories. Some kits include cutting, grinding, and sanding wheels, while others may include only the tool. If you need a guard, verify it is in the package because VERVEWAVE's listing does not mention one.
Consider the weight and size for your work. RhovixStar states it weighs under 4 lbs, but other listings do not give a weight. If you work overhead or in tight spaces, a lighter grinder reduces fatigue.
Who Should Skip These Picks
If you need a corded grinder for continuous heavy duty work, none of these cordless models are a match. Corded grinders provide unlimited runtime and often more power for grinding thick steel or concrete.
Buyers who need a specific disc size larger than 4 to 1/2 inches should look elsewhere. All these grinders are 4 to 1/2 inch except RhovixStar, which has a 3/8 to 16 spindle but still uses 4 to 1/2 inch accessories according to its title.
If you have no batteries and no brand preference, a full kit is the simpler choice, but if you already own DeWalt 20V MAX batteries, the bare tools save money. For occasional light tasks, a smaller 3 inch grinder might be easier to handle.
How This Shortlist Was Put Together
The picks were chosen from real listing data only, focusing on stated motor type, speed range, battery platform, and included accessories. The spread covers full kits and bare tools, different battery platforms, and a range of speed settings and spindle sizes.
No units were handled or tested. The comparison relies on what each listing states, so features not mentioned in a listing are marked as not listed. For more on battery platform and disc size tradeoffs, see the battery angle grinder selection guide.
Common Questions About Battery Angle Grinders
Should I buy a bare tool or a kit?
A bare tool costs less but requires a compatible battery and charger you already own. A kit includes batteries and a charger, so it is ready to use but costs more upfront. Choose based on whether you already have batteries from that brand.
What does the spindle size mean for accessories?
The spindle thread must match the arbor of your grinding or cutting wheels. Most 4 to 1/2 inch grinders use a 5/8 to 11 thread, but some use 3/8 to 16. Check your existing wheels before buying a grinder with a different spindle.
Is a higher RPM always better?
Not always. Higher RPM cuts faster but can be harder to control on delicate work. Variable speed settings let you use lower RPM for sanding or finishing and higher RPM for cutting. Match the speed range to your typical tasks.
The Right Grinder for Your Battery and Disc Needs
A homeowner with a growing collection of DeWalt 20V MAX tools and a need for fine speed control gets the VERVEWAVE bare tool: its six speeds and included wheels cover most cutting and grinding without buying another battery platform. A buyer who wants a complete kit with two batteries and dual guards for cutting and grinding should take the AOBEN kit, which includes everything needed to start work immediately.
How to read this guide. The picks were selected by comparing the stated motor type, speed settings, battery platform, spindle size, and included accessories in each listing, favoring a spread of bare tools and full kits. The comparison uses listing text only; no units were handled or tested, so features not stated in a listing are marked as not listed.