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Best picks

What Is the Best Battery Weed Eater for Your Yard?

There is no single best battery for every weed eater: select a trimmer and its compatible battery system for the yard, cutting path and workload.

GGearjury editorial team · Updated October 18, 2026· 7 min

Quick answer

For lighter trimming, STIHL FSA 57 pairs with the AK battery system. For a wider 15-inch path, Makita XRU15PT1 uses two 18V LXT batteries; WORX WG184 runs on two 20V Power Share batteries together. Batteries are platform-specific, so choose the exact compatible pack in the manual.

01STIHL FSA 57Official manufacturer image

Best for suburban maintenance

STIHL FSA 57

  • STIHL identifies its battery family as the AK System.
  • The maker offers the trimmer with an AK 10 battery and charger.

Drawback: Other STIHL platforms are not interchangeable unless specified.

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03WORX WG184Official manufacturer image

Best for using paired Power Share packs

WORX WG184

  • WORX states that two 20V batteries provide 40V total.
  • Its kit listing includes two batteries and a dual charger.

Drawback: The tool will not operate with only one battery installed.

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04

Best for V20 owners

CRAFTSMAN V20 CMCST920B

  • The tool belongs to the CRAFTSMAN V20 system.
  • The manufacturer lists two speed settings.

Drawback: The cited listing is tool-only.

05

Best for a single 40V battery platform

Greenworks 40V 15-inch Cordless Battery String Trimmer

  • The manufacturer identifies the product as a 40V trimmer.
  • It lists a variable trigger and bump-feed head.

Drawback: Check the chosen offer for battery and charger inclusions.

Compare them side by side

STIHL FSA 57Official manufacturer imageSTIHL FSA 57Makita XRU15PT1Official manufacturer imageMakita XRU15PT1WORX WG184Official manufacturer imageWORX WG184CRAFTSMAN V20 CMCST920BGreenworks 40V 15-inch Cordless Battery String Trimmer
Battery systemSTIHL AK18V LXT x 220V Power Share x 2V2040V
Battery configurationOne compatible AK packTwo 18V packsTwo matching 20V packsOne compatible V20 pack40V pack
Cutting width11 in15 in13 in13 in15 in
Kit detailBattery set availableFour 5.0Ah packs listedTwo packs and charger listedTool onlyBundle varies
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Common questions

Questions before you buy

What battery does the DEWALT weed eater use?

DEWALT battery compatibility depends on the exact model. Check the trimmer model number and its manual for the approved DEWALT battery family, voltage and pack requirements before purchase.

Can I use any battery with a cordless weed eater?

No. Use only a battery specified as compatible with the exact tool. Battery rails, voltage and platform electronics differ by manufacturer and model.

Does a higher-voltage battery always last longer?

Voltage alone does not establish runtime. Capacity, motor demand, cutting conditions and battery condition also affect how long a charge lasts.

Why does the WORX WG184 need two batteries?

WORX says WG184 is designed for a pair of 20V Power Share batteries to provide 40V total and will not operate with only one pack.

Sources and how we chose

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