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BLACK+DECKER Battery Powered Weed Eaters: 20V and 40V

Choose by the battery system you already own: BLACK+DECKER lists both 20V MAX and 40V trimmer models with different cutting widths.

BLACK+DECKER battery powered weed eaters come in distinct platform families. The LST136B uses the 40V MAX system and is sold tool-only, while the LST522 is a 20V MAX 12-inch trimmer/edger kit. Their batteries are not interchangeable across these voltage families, so identify your platform before selecting a tool.

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The essentials

Best Battery Powered String Trimmers for Different Yards

RYOBI RY402110 leads for its wide swath and published kit runtime; other picks suit attachment use, STIHL and FLEXVOLT owners.

Best Battery Operated Weed Eaters for Home Yards

STIHL FSA 50 suits edging flexibility; FSA 70 R targets more demanding homeowner work, and FSA 57 is aimed at smaller lawns.

Our picks

Top picks

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Best for a versatile mid-size cutting path

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ECHO DSRM-225

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Best for a shared Husqvarna battery platform

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Husqvarna 220iL

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Best for a wide 17-inch swath

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ECHO DSRM-2600

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By battery and power

Battery powered

Battery operated

Battery power

Cordless battery

Brands

Black And Decker

Best picks

Our best-of lists

Best Battery Powered String Trimmers for Different Yards

RYOBI RY402110 leads for its wide swath and published kit runtime; other picks suit attachment use, STIHL and FLEXVOLT owners.

Best Battery Operated Weed Eaters for Home Yards

STIHL FSA 50 suits edging flexibility; FSA 70 R targets more demanding homeowner work, and FSA 57 is aimed at smaller lawns.

Top Rated Battery Powered Weed Eaters to Compare

RYOBI offers a wide adjustable swath, while STIHL options cover edging conversion and smaller-lawn trimming.

Common questions

Questions before you buy

What does battery powered mean on a BLACK+DECKER weed eater?

It means the trimmer runs from a rechargeable battery rather than a power cord or petrol engine. The compatible battery platform and included kit components depend on the model.

How do I choose a BLACK+DECKER battery powered trimmer?

Start with the battery platform you own, then compare cutting width, edging conversion and whether the battery and charger are included. A tool-only model is useful only if you have compatible packs.

Can I use the LST136 battery with the LST522?

The LST136 is listed on a 40V platform and the LST522 on 20V MAX, so they use different voltage families. Follow the compatibility chart for each exact model.

Are parts interchangeable across BLACK+DECKER trimmers?

Not necessarily. Match replacement spools, guards and batteries to the exact model code in its manual or official parts listing.