Hands-On BLACK+DECKER 40V MAX 13 in String Review: The Good, the Bad, and the Verdict

Hands-On BLACK+DECKER 40V MAX 13 in String Review: The Good, the Bad, and the Verdict

There’s this annoying feeling you get when you see grass growing over the edges of the walkway and around fence posts. The BLACK+DECKER 40V MAX 13 in String trimmer is one of the top choices that people keep talking about.

That’s why I put the BLACK+DECKER 40V MAX 13 in String trimmer to the test, using the same routine I use for my own equipment. The main thing that stands out about this trimmer is that it’s got some great features: it’s a 40V MAX 13-inch trimmer and edger, it’s got a PowerCommand dial, and the pole is telescoping.

My Real-World Testing Notes

My initial experience really got things started, it was like watching grass slowly cover the path and wrap around the fence posts. As soon as I got my hands on it, I could tell where the extra cost was going – the quality of the build and the attention to detail were noticeably better.

The big moment finally arrived – cutting a sharp edge along the driveway and taking down a patch of weeds that had grown as high as my knees. What really made a difference here was the 13-inch cutting swath, and I have to say, it totally delivered on its promise, especially when it came to build quality: a reliable 40V platform that’s built to withstand the test of time.

You notice the weight of it in your hands, how it’s balanced, and the smooth sound it makes. Then there’s the way the line comes out, it’s like a little bump, and it’s something you get used to after a while. These are the kinds of things that you don’t see on a list of specs, but they’re what make a tool really great, and you feel them every time you use it.

When I put the old, worn-out equipment I had been using alongside the BLACK+DECKER 40V MAX 13 in String, it was like night and day – the new tool was in a whole different league. A big part of what made it stand out was the battery and runtime: it’s got a 40V MAX with a PowerCommand mode that helps save energy.

I got used to having it around and found more ways to use it. It was really helpful for trimming tight spaces around trees, posts, and the air conditioning unit, where my lawn mower couldn’t fit. This became a simple task, thanks to a specific feature: the PowerCommand dial, which lets me choose between maximum power and maximum runtime.

What really keeps it running smoothly is something pretty ordinary, but it’s effective: the PowerDrive transmission, along with a setup that’s straightforward and easy to use from the get-go. Having something you can rely on without having to worry about it is more important than any fancy features or specs.

Where it shows its price

To be honest, the weak point is the cutting width: a 13-inch width is suitable for most medium-sized yards. It’s a compromise that’s worth considering, rather than a major issue – just be aware of it when you’re making your decision.

Standout Features

The details that matter most come down to three things:

• 13-inch cutting swath. 40V MAX lithium battery.
• PowerCommand dial trades max power for max runtime.
• PowerDrive transmission. Adjustable telescoping pole.

Who It’s For (and Who It’s Not)

Buy the BLACK+DECKER 40V MAX 13 in String if:

• You want cordless convenience instead of fussy gas
• You’d rather pay once for top-tier performance and build quality
• You maintain edges, fence lines, and the area around trees

Think twice if:

• You’re shopping on a tight budget
• You have no lawn or only hard landscaping to deal with

Final Verdict

The BLACK+DECKER 40V MAX 13 in String trimmer is definitely one of the top-notch options I’d suggest. What really stands out about it is how well it’s made – the 40V platform has a reputation for being durable and long-lasting. One thing to consider, though, is the cutting swath: at 13 inches, it’s best suited for yards that are medium-sized. When I scored it, I gave it around 7 out of 10 for the cutting swath, 7 out of 10 for the battery life, and 8 out of 10 for how well it’s built. Overall, it’s a great choice if you’re looking for something that will last.

If watching the grass creep over the edges of the walkway and around every fence post is a recurring headache and you want it handled right, the extra spend is justified. If that lines up with what you need, you can check the latest price and availability on Amazon.

The Bottom Line on the BLACK+DECKER 40V MAX

If you want the short version: the BLACK+DECKER 40V MAX string trimmer steps up power and runtime over the 20V line, making it a better fit for medium-size yards, with the strengths and trade-offs covered above. Its higher-voltage battery gives the BLACK+DECKER 40V MAX more cutting muscle for thicker grass. For how it compares, see our roundup of the best string trimmers to pick in 2026. And for safe operation of outdoor power equipment, the Outdoor Power Equipment Institute is a solid resource.