BLACK+DECKER BESTA512CM 12" 3-in-1 Compact Electric Lawn Mower

BLACK+DECKER BESTA512CM is lightweight and very compact, 3-in-1 yard tool, designed to be used as corded walk-behind lawn mower, edger and trimmer.

BLACK+DECKER BESTA512CM is best suited for yards up to 1200 square feet (~112 square meters), or as second lawn mower for larger yards that have slopes and hard-to-reach surfaces.

Updated: February 21, 2020.

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BLACK+DECKER BESTA512CM Features and Specifications

BLACK+DECKER BESTA512CM is designed for small yards and for areas where larger mowers have issues with doing their job. Also, it is designed for both edging and trimming.

BLACK+DECKER BESTA512CM is electric, corded unit, being powered with 6.5 Amps motor. Cutting path is 12 inches (~30.5 cm), allowing the user to easily mow smaller yard.

af 100Unlike most lawn mowers that use blade to cut grass, BLACK+DECKER BESTA512CM is string trimmer/edger/mower. It uses single standard 0.065 inch (~1.65 mm) line via Automatic Feed Spool (AFS), allowing the user to focus on the task ahead. The model number for the Auto-Feed Trimmer Line Spools is AF-100 and can be ordered on line when required.

Maximum string speed is 8000 rpm, allowing it to easily cut tough grass and weed.

When mowing the grass, unit cuts grass rather evenly, especially when the height difference between new and old grass is not large.

Also, unit doesn't feature collector bag, so grass clippings are left on the lawn.

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BLACK+DECKER BESTA512CM weighs 9.9 pounds (~4.5 kg) with the most weight, in lawn mower configuration, resting on four wheels.

As electric lawn mower, BLACK+DECKER BESTA512CM features two cutting heights: 1.6 inches (~4 cm) and 2.4 inches (~6 cm). Unit physical dimensions are 37.63 x 15.31 x 7.38 inches (~95.6 x 38.9 x 18.7 cm).

Note that the handle is adjustable, allowing the user to set its length to the most comfortable position.

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One of the important accessories for corded lawn mowers is extension cord.

BLACK+DECKER BESTA512CM draws 6.5 Amps at 120 volts, requiring extension cord dimensioned accordingly - extension cord doesn't come by default! When choosing proper extension cord, go for brightly colored extension cord designed for outdoor use, which is thick enough to avoid unnecessary voltage drop and energy loses.

extension cord

Cable length depends on the yard size, but for example, 50 feet (~15 m) long 16/3 cord (16-gauge, 3-wire extension cord) is rated ~13 Amps, while the similar 100 feet (~30.5 m) long 16/3 cord is rated at 10 Amps.

6.5 Amps max of BLACK+DECKER BESTA512CM is not an issue for such cord.

Of course, cord must be in good condition.

Note: although BLACK+DECKER BESTA512CM uses 0.065 line for cutting grass and weed, and NOT blade, don't run it over extension cord during operation. Better safe than sorry!


Long Story Short: If you are looking for affordable and versatile 3-in-1 mower/edger/trimmer tool, consider BLACK+DECKER BESTA512CM.

It can reach and mow areas that are problematic to larger lawn mowers, and can replace few more tools as well, saving time, effort and in the end - money.

For more reviews and recommendations, check BLACK+DECKER BESTA512CM Compact Electric Lawn Mower Amazon link (link opens in the new window).