OUBA Cordless Angle Grinder Compatible for Dewalt 20V vs RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder
Updated July 2026 — OUBA Cordless Angle Grinder Compatible for Dewalt 20V wins on battery and speed control, RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder wins on price and ease of use.
The Cordless Angle Grinder offers better power and features, while the RYOBI is more budget-friendly and easier to use.
Why OUBA Cordless Angle Grinder Compatible for Dewalt 20V is better
Power
Higher RPM at 9500 compared to RYOBI's 9000
Battery Compatibility
Designed for Dewalt 20V MAX batteries
Speed Settings
Offers three variable speed settings
Why RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder is better
Price
More affordable at $54.00
Build Quality
Die-cast metal gear case for durability
Ease of Use
Includes spindle lock for quick accessory changes
Overall score
Specifications
| Spec | OUBA Cordless Angle Grinder Compatible for Dewalt 20V | RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder |
|---|---|---|
| Motor Type | Brushless | Brushed |
| Max RPM | 9500 | 9000 |
| Weight | 5.5 lbs | 4.5 lbs |
| Handle Positions | 2 | 3 |
| Battery Included | Yes | No |
Dimension comparison
Overview
When comparing the Cordless Angle Grinder Compatible for Dewalt 20V Max Battery and the RYOBI PCL445B ONE+ 18V Cordless Angle Grinder, both tools offer robust features for their respective price points. The Dewalt-compatible model is priced at $69.99, while the RYOBI grinder is more budget-friendly at $54.00, making it about 23% cheaper. However, each grinder has unique attributes that cater to different user needs.
Power and Performance
The Cordless Angle Grinder has a powerful brushless motor capable of reaching speeds of up to 9,500 RPM, which is slightly higher than the RYOBI's 9,000 RPM. This gives the Dewalt-compatible grinder a slight edge in terms of raw power, allowing for efficient grinding and polishing tasks. Nonetheless, the RYOBI grinder still delivers rapid material removal, making it a reliable choice for various applications. The difference in RPM may influence users who prioritize speed and efficiency in their projects.
Battery Compatibility
Battery compatibility is a critical factor for cordless tools, and here the Cordless Angle Grinder shines. It is engineered specifically for use with Dewalt's 20V MAX batteries, eliminating the need to purchase additional power sources. In contrast, the RYOBI PCL445B is sold as a bare tool, meaning that users must obtain a compatible battery and charger separately. This could add to the overall cost for those who do not already own RYOBI batteries, making the Dewalt-compatible model more appealing for users within that ecosystem.
Build Quality and Durability
In terms of build quality, the RYOBI grinder features a die-cast metal gear case, which enhances its durability and resilience during heavy use. The Cordless Angle Grinder includes a durable stand designed for wood cutting, which stabilizes the work surface and minimizes uneven cuts. While both tools are built to withstand rigorous tasks, the RYOBI model's metal casing may provide an advantage for long-term use in demanding environments.
Ease of Use
Ease of use is essential for any power tool, and the RYOBI PCL445B incorporates features that enhance user experience. It comes with a spindle lock that allows for quick accessory changes, paired with a 3-position side handle for maximum control during operation. The Cordless Angle Grinder also offers a comfortable 2-position handle and an LED display for speed monitoring. While both tools provide a good level of comfort and control, the RYOBI model may be slightly easier for users to operate quickly and efficiently.
Speed Settings
The Cordless Angle Grinder offers three variable speed settings, giving users the flexibility to choose the right speed for different tasks. This feature can significantly enhance precision and work quality, especially for intricate projects. The RYOBI grinder, while powerful, lacks this ability, operating at a fixed speed. The versatility of variable speeds in the Dewalt-compatible model could be crucial for users who require more control over their grinding tasks.
Pricing
At $69.99, the Cordless Angle Grinder is positioned as a mid-range tool, while the RYOBI PCL445B is more economical at $54.00. This price difference of $15.99 translates to about 23% savings for those opting for the RYOBI grinder. However, the additional features and power of the Cordless Angle Grinder may justify the higher price for some users. Ultimately, the decision may come down to budget considerations versus desired capabilities.
Sales Rank
Sales rank can be an indicator of consumer preference, and the RYOBI PCL445B holds a better position at 18,870 compared to the Cordless Angle Grinder’s rank of 51,080. This suggests that the RYOBI grinder is more popular among buyers, which might reflect its value and effectiveness in real-world applications. Nevertheless, popularity doesn’t necessarily equate to performance, so it’s essential to consider individual needs.
Which should you buy?
Choosing between the Cordless Angle Grinder Compatible for Dewalt 20V Max Battery and the RYOBI PCL445B ONE+ 18V Cordless Angle Grinder ultimately depends on your specific needs and existing tools. If you prioritize battery compatibility and additional speed settings, the Dewalt-compatible grinder may be the better choice despite its higher price. Conversely, if you are looking for a more affordable option that still provides reliable power and ease of use, the RYOBI grinder is an excellent option. Consider your current battery situation, desired features, and budget to make the best decision for your projects.

