Black & Decker LST136 vs GreenWorks 21212

This lightweight trimmer is extremely easy to use: just pull it out of the shed, check if the string is loaded, attach the battery, and you are good to go without any power cords, oil mixing, or spark plug cleaning.

Contrarily to what happens with gas string trimmers, there is no need to worry about oil, spark plugs, engine wear, or keeping extra gas.

With a quick turn of the shaft, the trimmer can quickly become an edger, complete with height guard to keep your edges even. Additionally, a built-in guide helps to keep the edge straight and even. It flips up out of the way when the unit is in trimming mode. Versatility like this eliminates the need to buy another tool just for edging.

Black & Decker provides spare parts and plans for this trimmer, so you can just order a new part and replace it yourself.

Since it is a single-line trimmer it is easier to wind in the line without any unnecessary tangles that can happen with dual line trimmers.

The line feeds itself, depending on the resistance detected, as you trim along.

The trimmer has a 13" cutting path, so you don’t have to swing it around as much as with trimmers with a narrower path.

The trimmer has six different power settings, allowing the operator to adjust the speed that's best suited to the current scenario.

The LED indicator on the battery tells you how much power is left, so you don’t have to do any guessing.

You can use batteries from other Black & Decker tools that use 40V lithium-ion elements, allowing you to swap batteries between tools whenever necessary.

Because of the adjustable shaft height, you can optimize the trimmer to a comfortable level, avoiding unnecessary back pain. However, due to its short length, it may no be very suited for tall users.

Weighing under 8 pounds, it can even be used by teenagers and seniors without risk of back pain.

This trimmer has enough power to do pretty much every small domestic job you might come across. Additionally, this trimmer has a short yet precise string perfectly suited for small-sized jobs.

This string trimmer is, in fact, one of the lightest trimmers available on the market. It weighs only 5.2 pounds, meaning that it's easy to carry around by pretty much anyone.

If you rotate this unit's shaft, you can convert this trimmer into an edger, so you can finish your garden work by straightening the grass at the sidewalk. While the edging function works well, it does take some time to become used to it, as no wheel supports the trimmer while you are doing the job.