Cordless Lawn Edgers That Cut Clean Lines Without the Cord Hassle

A string edger uses a flexible nylon line that spins to cut grass, similar to a trimmer. It is lighter and often cheaper but may not cut as cleanly through thick turf. A blade edger uses a rigid metal blade that slices through soil and grass, creating a sharp, defined edge. Blade edgers are heavier and more powerful.

Battery life depends on the voltage, amp hour rating, and the thickness of the grass. Most edgers run for 20 to 40 minutes per charge. Higher voltage batteries, like 40V or 56V, typically last longer. If you have a large yard, consider buying an extra battery to extend your work session.

Many brands design edgers to be compatible with their existing battery platforms, such as DEWALT 20V, RYOBI ONE+, or CRAFTSMAN V20. Check the product specifications to ensure compatibility. This can save you money and allows you to share batteries across multiple tools.

Modern cordless edgers, especially those with 40V or higher batteries, offer comparable power to gas models for most residential tasks. They are quieter, lighter, and require less maintenance. However, gas edgers may still be preferred for professional or extremely heavy duty use due to their continuous runtime and raw power.

Keep the edger clean and dry after use. For blade edgers, occasionally check the blade for sharpness and replace if dull. For string edgers, replace the line when it becomes short. Store the battery in a cool, dry place and avoid exposing it to extreme temperatures. Follow the manufacturer’s instructions for battery care.

You can use a string trimmer upside down to cut along edges, but it is less precise and can be tiring. An edger is specifically designed to cut a clean, vertical edge along hard surfaces. If you have a convertible trimmer/edger, you can switch modes for a better result.

Always wear safety glasses to protect your eyes from debris. Long pants and closed toe shoes are recommended. If using a blade edger, consider wearing steel toe boots for extra protection. Hearing protection is not necessary for battery powered models, but it can be worn if you prefer.

The ideal depth is about 2 to 3 inches, creating a clean separation between the grass and the sidewalk or driveway. Most edgers have an adjustable depth setting. Avoid cutting too deep, as it can damage grass roots and make the edge harder to maintain.

It is best to edge when the grass is dry. Wet grass can clump and clog the edger, and the blade may slip on slick surfaces. Additionally, wet conditions can make the soil softer, which might cause the edger to dig in too deeply. Wait for dry conditions for the best results.

Edging frequency depends on how fast your grass grows. During the growing season, edging every two weeks is common. Some homeowners edge each time they mow for a crisp look. Regular edging prevents grass from creeping onto hard surfaces, making the job easier each time.