BLACK+DECKER 20V MAX POWERCONNECT 5-1/2 in. vs FLEX 24V Brushless Cordless 6-1/2-Inch In-Line
Updated July 2026 — FLEX 24V Brushless Cordless 6-1/2-Inch In-Line leads on price and runtime.
The FLEX 24V Brushless Cordless Circular Saw offers superior cutting performance and battery efficiency, making it the better choice for demanding tasks.
Why BLACK+DECKER 20V MAX POWERCONNECT 5-1/2 in. is better
Lower Price
BLACK+DECKER is priced at $95.00.
Ease of Use
Tool-free adjustments for quick modifications.
Compact Size
5-1/2 inch blade is versatile for DIY tasks.
Why FLEX 24V Brushless Cordless 6-1/2-Inch In-Line is better
Cutting Power
Can cut 3x lumber in one pass.
Battery Efficiency
24V system offers longer runtime.
Warranty
5-year limited warranty with registration.
Overall score
Specifications
| Spec | BLACK+DECKER 20V MAX POWERCONNECT 5-1/2 in. | FLEX 24V Brushless Cordless 6-1/2-Inch In-Line |
|---|---|---|
| Battery | 20V MAX | 24V |
| Motor Type | Brushed | Brushless |
| Cutting Capacity | 1.5 inches | 2.56 inches |
| Weight | 6.5 lbs | 7.5 lbs |
| Warranty | N/A | 5 years |
Dimension comparison
Overview
When it comes to circular saws, the BLACK+DECKER 20V MAX POWERCONNECT and the FLEX 24V Brushless Cordless models present two compelling options for DIY enthusiasts and professionals alike. The BLACK+DECKER model is priced at $95.00, while the FLEX variant costs $177.66, making it about 87% more expensive. Each saw has unique features and performance capabilities that cater to different cutting needs and preferences.
Design and Build Quality
The design of a circular saw impacts its usability and comfort during operation. The BLACK+DECKER features a compact 5-1/2 inch blade, making it versatile for various DIY tasks. Its lightweight design allows for easy maneuverability. In contrast, the FLEX boasts a world-first in-line design, which enhances balance and visibility, allowing for a clearer view on both sides of the blade. This feature is particularly advantageous for making precise cuts. Ultimately, while both designs are user-friendly, the FLEX’s innovative layout may offer better control for some users.
Cutting Performance
Cutting performance is a crucial factor to consider when choosing a circular saw. The BLACK+DECKER saw is equipped with a fast-cutting 5-1/2 inch blade, suitable for many home repairs. However, the FLEX model stands out with its ability to cut 3x lumber in one pass, offering a depth of cut up to 2-9/16 inches. This capability allows users to tackle larger projects more efficiently. For those who prioritize cutting power, the FLEX offers superior performance.
Battery System
Battery compatibility and efficiency are essential for cordless tools. The BLACK+DECKER saw operates on a 20V MAX POWERCONNECT battery system, which is interchangeable with other tools in the line, providing convenience for users with multiple BLACK+DECKER products. Conversely, the FLEX utilizes a 24V battery system, which promises 20% more power and exceptional runtime, making it capable of performing up to 430 cuts in 2x4 lumber with a 5.0Ah battery. While the BLACK+DECKER offers versatility, the FLEX battery system may provide longer-lasting power for demanding tasks.
Ease of Use
Both circular saws prioritize ease of use, but they approach it differently. The BLACK+DECKER features tool-free depth adjustments and blade changes, allowing for quick modifications without needing additional tools. This is particularly useful for users who need to make frequent adjustments. The FLEX, while not explicitly detailing tool-free features, emphasizes its sensor-free brushless motor designed for higher efficiency and power, which can lead to a smoother user experience. While both options cater to user convenience, the BLACK+DECKER may have a slight edge in quick adjustments.
Durability and Warranty
Durability is essential for any power tool, and both brands offer solid warranties. The BLACK+DECKER comes with no specific warranty details mentioned, which might raise concerns for some buyers. In contrast, the FLEX offers a 5-year limited warranty when registered within 30 days of purchase, providing peace of mind for long-term use. This extended warranty reflects the brand's confidence in its product's durability and reliability, making it a more attractive option for those concerned about longevity.
Price Comparison
Price is a significant factor in purchasing decisions. The BLACK+DECKER is priced at $95.00, making it a budget-friendly option for DIYers or those needing a reliable saw for occasional tasks. On the other hand, the FLEX is priced at $177.66, which is about 87% more than the BLACK+DECKER. While the FLEX offers advanced features and performance capabilities that may justify its higher price, the BLACK+DECKER remains an economical choice for those with basic cutting needs.
Which should you buy?
Choosing between the BLACK+DECKER 20V MAX POWERCONNECT and the FLEX 24V Brushless Cordless circular saws depends on your specific needs. If you are looking for a budget-friendly option that provides solid performance for home repairs, the BLACK+DECKER is an excellent choice, especially given its lower price of $95.00. However, if you require a more powerful, feature-rich tool capable of handling larger projects with precision, the FLEX is worth the investment at $177.66. Ultimately, your decision should align with your cutting needs, budget, and preference for user-friendly features.

