Aiderar 4-1/2" Cordless Angle Grinder Tool, vs CRAFTSMAN V20* Angle Grinder, Small, 4-1/2-Inch, Tool Only
Updated July 2026 — Aiderar 4-1/2" Cordless Angle Grinder Tool, wins on speed and safety guards, CRAFTSMAN V20* Angle Grinder, Small, 4-1/2-Inch, Tool Only wins on rpm and price.
The Aiderar 4-1/2" Cordless Angle Grinder offers better value and versatility, while the CRAFTSMAN V20* excels in high-performance applications.
Why Aiderar 4-1/2" Cordless Angle Grinder Tool, is better
Price
Aiderar is $4.52 cheaper than CRAFTSMAN
Motor Type
Aiderar features a brushless motor for better durability
Speed Control
Aiderar has a 3-speed control for versatility
Why CRAFTSMAN V20* Angle Grinder, Small, 4-1/2-Inch, Tool Only is better
RPM
CRAFTSMAN operates at 8,500 RPM for aggressive tasks
Comfort
CRAFTSMAN has a contoured over-molded handle
Guard Adjustment
CRAFTSMAN offers tool-free guard adjustment
Overall score
Specifications
| Spec | Aiderar 4-1/2" Cordless Angle Grinder Tool, | CRAFTSMAN V20* Angle Grinder, Small, 4-1/2-Inch, Tool Only |
|---|---|---|
| Motor Type | Brushless | Brushed |
| Battery Compatibility | DeWalt 20V MAX | CRAFTSMAN V20 |
| Guard Type | Interchangeable | Tool-free |
| Warranty | None | Limited Lifetime |
| Trigger Type | Variable-speed | Standard |
Dimension comparison
Overview of the Aiderar 4-1/2" Cordless Angle Grinder Tool and CRAFTSMAN V20* Angle Grinder
The Aiderar 4-1/2" Cordless Angle Grinder Tool is priced at $59.99, while the CRAFTSMAN V20* Angle Grinder costs $64.51. The Aiderar grinder is about 8% cheaper than the CRAFTSMAN model. Both tools are designed for various grinding tasks, but they cater to slightly different user needs and have unique features that set them apart.
Performance and Power
The Aiderar 4-1/2" Cordless Angle Grinder features a brushless motor that offers longer runtime and durability, making it suitable for both light and heavy-duty tasks. It operates with a 3-speed control system, allowing users to adjust settings for grinding, sanding, or cutting. On the other hand, the CRAFTSMAN V20* Angle Grinder boasts a powerful 8,500 RPM, which is designed for aggressive grinding applications. Both tools are capable performers, but the CRAFTSMAN may provide a more robust output for demanding jobs.
Design and Ease of Use
In terms of design, the Aiderar Cordless Angle Grinder integrates well with DeWalt 20V MAX batteries, which is ideal for users who already own compatible tools. It also features a variable-speed trigger and soft start technology for a smoother operation. The CRAFTSMAN V20* Angle Grinder includes a tool-free guard adjustment for quick changes, enhancing its usability. Both grinders emphasize user-friendly features, but the Aiderar's variable speed may be more advantageous for those looking to have precise control over their tasks.
Safety Features
Safety is a crucial aspect of angle grinders, and both models include protective measures. The Aiderar grinder comes with two rugged metal safety guards that can be switched out depending on the task, whether grinding or cutting. Conversely, the CRAFTSMAN V20* Angle Grinder features a cast metal gear housing designed to dissipate heat during extended usage, which can prevent overheating and enhance safety. While both tools prioritize user safety, the Aiderar offers more versatility with its interchangeable guards.
Comfort and Handling
Comfort during use is another area where both grinders excel. The Aiderar Cordless Angle Grinder has a professional variable-speed trigger, allowing for smooth operation, while the soft start feature minimizes jerky movements. The CRAFTSMAN V20* Angle Grinder offers a contoured over-molded handle for added comfort and a 3-position handle for better control and versatility. Ultimately, the choice between the two may depend on personal preference for grip style and handling comfort.
Weight and Portability
Portability is essential for a cordless angle grinder, and both options deliver in this respect. The Aiderar model is compact and designed for quick, hassle-free DIY projects. The CRAFTSMAN V20* Angle Grinder is also lightweight, making it easy to maneuver on various job sites. While the specific weights are not provided, both tools are aimed at users who need a portable solution for grinding tasks, making them suitable for on-the-go applications.
Price Comparison
The Aiderar 4-1/2" Cordless Angle Grinder is currently priced at $59.99, making it about $4.52 cheaper than the CRAFTSMAN V20* Angle Grinder, which is priced at $64.51. This price difference of approximately 8% might be significant for budget-conscious buyers. Additionally, the Aiderar's average price over the last 90 days is $54.35, suggesting it may be a more stable investment in terms of cost.
Which should you buy?
Ultimately, the decision between the Aiderar 4-1/2" Cordless Angle Grinder and the CRAFTSMAN V20* Angle Grinder should be based on your specific needs. If you are a user of DeWalt 20V MAX tools and value the versatility of speed settings, the Aiderar may be the better choice. However, if you prioritize high RPM for aggressive applications and appreciate the comfort provided by a contoured handle, the CRAFTSMAN may suit you better. Both tools are excellent in their own right, but your choice should reflect your particular use case and preferences.

