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RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder vs SEESII Cordless Mini Angle Grinder: 3-Inch

Updated July 2026 — RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder wins on weight and control, SEESII Cordless Mini Angle Grinder: 3-Inch wins on speed and price.

The RYOBI PCL445B offers better durability and lower cost, while the SEESII excels in portability and included accessories.

Why RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder is better

Price

RYOBI is cheaper at $54.00

Build

RYOBI has a die cast metal gear case

Control

RYOBI features a 3-position side handle

Why SEESII Cordless Mini Angle Grinder: 3-Inch is better

Speed

SEESII reaches 19,000 RPM

Weight

SEESII is lightweight at 1.85 lbs

Accessories

SEESII includes multiple cutting discs

Overall score

RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder
75
SEESII Cordless Mini Angle Grinder: 3-Inch
82

Specifications

SpecRYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle GrinderSEESII Cordless Mini Angle Grinder: 3-Inch
Motor TypeBrushedBrushless
RPM900019000
Included BatteriesNo2 pcs
Weight5.5 lbs1.85 lbs
Safety FeaturesNoneYes

Dimension comparison

RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle GrinderSEESII Cordless Mini Angle Grinder: 3-Inch

Price Comparison

The RYOBI PCL445B ONE+ is priced at $54.00, while the SEESII Cordless Mini Angle Grinder is slightly more expensive at $59.99. This makes the RYOBI about 8% cheaper than the SEESII. If budget is a significant factor for you, the RYOBI presents a more economical option, especially when considering that its average price over the last 90 days is $49.67, which indicates its competitive pricing in the market. Meanwhile, the SEESII has an average price of $76.35 over the same period, highlighting its recent price drop but still placing it in a higher bracket compared to the RYOBI.

Design and Build Quality

The RYOBI PCL445B features a die cast metal gear case which enhances its durability, while the SEESII is designed to be lightweight and compact, weighing only 1.85 lbs. This makes the RYOBI more robust for heavy-duty tasks, whereas the SEESII's design favors portability and ease of use for lighter projects. The RYOBI's 3-position side handle provides maximum control during operation, making it a better choice for extended use, while the SEESII focuses on user comfort with a design that supports one-handed operation, ideal for DIY enthusiasts.

Motor Performance

The RYOBI PCL445B boasts a powerful motor that reaches speeds of up to 9,000 RPM. In contrast, the SEESII can achieve a higher speed of 19,000 RPM thanks to its brushless motor. This implies that the SEESII can handle tougher materials more efficiently, making it a strong contender for cutting and grinding tasks that require speed. However, the RYOBI’s motor still delivers rapid material removal, making it effective for a variety of applications, albeit at a lower speed than the SEESII.

Power Source and Battery

The RYOBI PCL445B is sold as a bare tool, meaning that batteries and chargers are sold separately, which can be a drawback for users who need a complete package. On the other hand, the SEESII comes with two 21V 2.0Ah lithium batteries, providing a significant advantage in terms of immediate usability and convenience. The dual batteries ensure longer operational periods, making the SEESII better suited for users who prefer a cordless experience without the hassle of purchasing additional accessories.

Safety Features

The SEESII emphasizes safety with an enhanced safety system that includes overheat and overload protection, as well as an advanced cooling system to extend the lifespan of the tool. This feature is particularly beneficial for users who may engage in longer working sessions. The RYOBI does not specifically mention safety features, which could be a consideration for those looking for added peace of mind during operation. While both products prioritize user safety, the SEESII's design explicitly addresses potential overheating issues.

Versatility and Accessories

The RYOBI PCL445B is designed for versatility, with a spindle lock that allows for quick and easy accessory changes. However, it does not come with any accessories included. Conversely, the SEESII provides a comprehensive all-in-one grinding kit that includes seven different cutting discs, making it a more versatile option out of the box. This extensive accessory package allows users to tackle a wider range of tasks, from cutting to grinding, right from the start, enhancing its appeal for DIY projects and renovation tasks.

User Experience and Comfort

The RYOBI PCL445B is designed for durability and control, with features that promote comfort during extended use, while the SEESII's compact design makes it easier to handle for smaller tasks and tight spaces. Users may find the RYOBI more suitable for rigorous applications due to its robust build, while the SEESII's lightweight nature may reduce fatigue during prolonged use. The choice between these two options largely depends on the user's specific needs—whether they prefer a heavy-duty tool or a lightweight, easy-to-handle gadget for lighter tasks.

Which should you buy?

Ultimately, the choice between the RYOBI PCL445B and the SEESII Cordless Mini Angle Grinder hinges on your specific needs. If you prioritize durability and a lower initial cost, the RYOBI is a great option, especially for those who may already have compatible batteries. However, if you require a lightweight, versatile tool with included accessories and higher RPM for heavy-duty tasks, the SEESII would be the better choice despite its higher price. Each product serves different user preferences, making it essential to consider what you'll be using the grinder for before making a decision.