Ridgid 18-Volt OCTANE Cordless Brushless 7 in. Dual Angle Grinder

Every once in a while, a tool comes along that promises to change the way we work. The Ridgid 18-Volt OCTANE Cordless Brushless 7 in. Dual Angle Grinder (R88040B) is one such tool, and I recently had the opportunity to put it through its paces. As someone who relies heavily on the versatility and power of my tools, I was eager to see if this grinder could live up to its claims.

First Impressions

Right out of the box, the Ridgid grinder catches your eye with its robust build quality. The brushless motor and advanced electronics are immediately noticeable, promising improved performance and durability. The grinder is designed to operate with either one or two OCTANE batteries, which theoretically should provide increased power and runtime. The inclusion of essential accessories like a grinder wheel, spanner wrench, and auxiliary handle is a thoughtful touch, ensuring you're ready to get to work immediately.

Power and Performance

The first thing I wanted to test was the power. With a speed of 6900 rpm, the grinder is no slouch. I started with some heavy-duty grinding tasks, and the tool performed admirably. The electronic brake system is a standout feature, bringing the blade to a halt quickly after releasing the trigger. This is not only a safety feature but also a time-saver, allowing for faster transitions between tasks.

However, I did notice that the grinder's performance is highly dependent on the type of batteries used. When using OCTANE batteries, the power output is impressive, and the runtime is decent. But when I switched to non-OCTANE batteries, there was a noticeable drop in performance. This makes the tool somewhat exclusive to those who already own or are willing to invest in OCTANE batteries.

Ergonomics and Ease of Use

The Ridgid grinder scores high on ergonomics. The rotating handle is a fantastic feature, adding versatility and making it easier to tackle awkward angles and tight spaces. The two-finger lock-on trigger provides improved control, reducing hand fatigue during extended use. The paddle grinder switch is intuitive and easy to operate, even with gloves on.

Despite these ergonomic features, the tool is on the heavier side, especially when fitted with two batteries. This added weight can be a drawback during prolonged use, making it less ideal for tasks that require extended periods of grinding.

Battery Life

Battery life is a mixed bag with this grinder. While the tool is optimized for OCTANE batteries, even these high-capacity batteries drain relatively quickly under heavy use. In my tests, two 5-hour batteries lasted around ten minutes during continuous heavy grinding. This means frequent battery swaps, which can be a hassle, especially on larger projects. The tool's ability to run on two non-OCTANE batteries is a nice feature, but as mentioned earlier, the performance drop makes this less appealing.

Versatility

One of the grinder's strong points is its versatility. It's compatible with all RIDGID 18-Volt batteries and chargers, which is a boon for those already invested in the Ridgid ecosystem. The rotating handle and the ability to use either one or two batteries add layers of flexibility, making it suitable for a variety of tasks ranging from metal grinding to surface preparation.

Durability

Ridgid tools are known for their durability, and this grinder is no exception. The brushless motor not only offers better performance but also ensures a longer lifespan. The overall build quality is sturdy, and the tool feels like it can withstand the rigors of a demanding job site. The 90-day returnable policy also provides some peace of mind, allowing you to test the tool and ensure it meets your needs.

Final Thoughts

The Ridgid 18-Volt OCTANE Cordless Brushless 7 in. Dual Angle Grinder is a powerful and versatile tool, but it's not without its drawbacks. The need for OCTANE batteries to achieve optimal performance can be limiting, and the relatively short battery life under heavy use is a concern. The added weight, while manageable, can be a drawback for extended tasks.

Would I recommend this tool? It depends on your specific needs and existing tool ecosystem. If you already own OCTANE batteries and are looking for a high-performance cordless grinder, this tool is a solid choice. Its power, versatility, and ergonomic features make it suitable for a variety of tasks. However, if you're new to the Ridgid platform or need a grinder for extended heavy-duty use, you might want to consider other options or keep a corded grinder as a backup.

In summary, the Ridgid 18-Volt OCTANE Cordless Brushless 7 in. Dual Angle Grinder is a well-designed tool with a lot to offer, but its reliance on specific batteries and relatively short battery life are factors to consider before making a purchase.