Six generic cordless string trimmers arranged for comparison beside a sunny lawn.

Best Black and Decker 36V Weed Eaters Compared

As an Amazon Associate we earn from qualifying purchases. Details

A 36V cordless weed eater sits between lighter 20V trimmers and heavier gas models, which makes it a fit for thicker growth and longer edging sessions. Before comparing, confirm whether you already use a 36V battery from the same brand, because a second battery can change the total cost more than the tool does. A bare tool makes sense only when that battery is already on hand.

Next, compare the stated weight, shaft type and cutting head, and whether a guard or attachments are included. Where a listing does not give a weight or shaft figure, mark it as unknown and check with the seller. Storage space and your longest edge length are the final filters before you order.

Quick answer

Start with the first pick when you want the broadest clearly stated match for cordless string trimmer. The second pick is the alternative when its listed format fits your setup more closely. Use the remaining picks for narrower situations revealed by their stated dimensions, range, construction, or included components. Do not transfer a capability from one item to another. Before choosing, write down the one requirement that would make the product unusable if missed. Then compare that requirement against the exact selected variant. If the product page does not state the needed limit, remove that option from the shortlist or ask the manufacturer to clarify it.

What matters for this decision

Exact product type

The title and feature statements should describe the job directly. A related accessory, replacement component, or broad-purpose tool is not automatically an equivalent choice. Keep the search intent intact, and reject a variant whose own wording changes the product type.

Fit and operating context

Fit is the first pass/fail test. For yard equipment, match the stated tool type, power source, voltage platform, cutting or airflow format, and included components to the intended job. Do not infer battery compatibility, runtime, cutting reach, or collection ability when the selected product does not state it.

Readout, access, and adjustment

A feature matters only when it changes daily use. Consider whether you can control the tool, change its working position, reach the target area, manage the cord or battery, and empty or replace any included collection component. Prefer explicit feature wording over a photograph-based guess.

Installation and included pieces

Separate the main product from what arrives with it. Batteries, chargers, guards, lines, bags, tubes, poles, and blades should count only when the selected variant explicitly includes them. Also confirm the mounting surface or working environment before committing.

Stated limits

Missing information is a real limitation. An unstated load capacity, material detail, safety category, waterproof claim, or compatibility range should not be filled in by assumption. Decide whether that unknown affects your intended use; if it does, choose a more explicit option.

Related decisions

Use this nearby equipment guide to separate the primary task from adjacent yard work. Compare the relevant power option before committing to a battery or cord platform. Review this related selection guide when the intended job includes another tool category. Each guide answers a different purchase question, so its products should not be treated as interchangeable.

The picks

The first pick: best overall

For candidate 1, the power source entry states Corded Electric. For candidate 1, the color entry states Orange, Black. For candidate 1, the item weight entry states 6.3 pounds. These points make candidate 1 relevant when those exact fields control the cordless string trimmer decision. Keep every capability attached to candidate 1 rather than borrowing a claim from another tool. Confirm candidate 1 after choosing the final size, kit, voltage, or style because variant changes may alter included components. The open limitation for candidate 1 is any job-specific condition its listing does not state. Skip candidate 1 if your work depends on such an unstated condition. Retain candidate 1 only when its documented tool type, power arrangement, and supplied pieces meet the requirement written before comparison.

The second pick: best straightforward option

For candidate 2, the power source entry states Battery Powered. For candidate 2, the color entry states Crimson. For candidate 2, the item weight entry states 6.2 pounds. These points make candidate 2 relevant when those exact fields control the cordless string trimmer decision. Keep every capability attached to candidate 2 rather than borrowing a claim from another tool. Confirm candidate 2 after choosing the final size, kit, voltage, or style because variant changes may alter included components. The open limitation for candidate 2 is any job-specific condition its listing does not state. Skip candidate 2 if your work depends on such an unstated condition. Retain candidate 2 only when its documented tool type, power arrangement, and supplied pieces meet the requirement written before comparison.

The third pick: best compact choice

For candidate 3, the power source entry states Battery Powered. For candidate 3, the color entry states Black and Orange. For candidate 3, the item weight entry states 4.6 pounds. These points make candidate 3 relevant when those exact fields control the cordless string trimmer decision. Keep every capability attached to candidate 3 rather than borrowing a claim from another tool. Confirm candidate 3 after choosing the final size, kit, voltage, or style because variant changes may alter included components. The open limitation for candidate 3 is any job-specific condition its listing does not state. Skip candidate 3 if your work depends on such an unstated condition. Retain candidate 3 only when its documented tool type, power arrangement, and supplied pieces meet the requirement written before comparison.

The fourth pick: best adjustable setup

For candidate 4, the power source entry states Battery Powered. For candidate 4, the color entry states Green. For candidate 4, the cutting width entry states 12 inches. These points make candidate 4 relevant when those exact fields control the cordless string trimmer decision. Keep every capability attached to candidate 4 rather than borrowing a claim from another tool. Confirm candidate 4 after choosing the final size, kit, voltage, or style because variant changes may alter included components. The open limitation for candidate 4 is any job-specific condition its listing does not state. Skip candidate 4 if your work depends on such an unstated condition. Retain candidate 4 only when its documented tool type, power arrangement, and supplied pieces meet the requirement written before comparison.

The fifth pick: best feature-led pick

For candidate 5, the power source entry states Battery Powered (Battery and Charger not Included). For candidate 5, the color entry states Black (Battery and Charger not Included). For candidate 5, the item weight entry states 4.2 pounds. These points make candidate 5 relevant when those exact fields control the cordless string trimmer decision. Keep every capability attached to candidate 5 rather than borrowing a claim from another tool. Confirm candidate 5 after choosing the final size, kit, voltage, or style because variant changes may alter included components. The open limitation for candidate 5 is any job-specific condition its listing does not state. Skip candidate 5 if your work depends on such an unstated condition. Retain candidate 5 only when its documented tool type, power arrangement, and supplied pieces meet the requirement written before comparison.

The sixth pick: best alternative format

For candidate 6, the power source entry states Battery Powered. For candidate 6, the color entry states Bright Red. For candidate 6, the cutting width entry states 6 inches. These points make candidate 6 relevant when those exact fields control the cordless string trimmer decision. Keep every capability attached to candidate 6 rather than borrowing a claim from another tool. Confirm candidate 6 after choosing the final size, kit, voltage, or style because variant changes may alter included components. The open limitation for candidate 6 is any job-specific condition its listing does not state. Skip candidate 6 if your work depends on such an unstated condition. Retain candidate 6 only when its documented tool type, power arrangement, and supplied pieces meet the requirement written before comparison.

At a glance: the 6 picks, by their own spec fields

Pick Power source Weight / cutting width Flag
BLACK+DECKER 14-inch 2-in-1, 6.5-Amp Corded electric 6.3 lb Not a 36V model — this is corded, not battery-powered at all
21V Cordless String Trimmer & Edger Battery powered, 2.5Ah 6.2 lb 21V, not 36V
Worx 20V 12″ 2-in-1 (WG163.9) Battery powered 4.6 lb 20V, not 36V; battery/charger may not be included
Greenworks 24V 12″ Trimmer & Blower Combo Battery powered, 2.0Ah 12 in cutting width 24V, not 36V; battery/charger may not be included
HEINPRO for DeWalt 20V MAX Battery powered (battery/charger not included) 4.2 lb 20V DeWalt-compatible, not 36V; battery not included
ALSO GO 21V Weed Wacker with Wheels Battery powered 6 in cutting width 21V, not 36V

None of these six picks is an actual Black+Decker 36V weed eater — voltages here range from corded to 20V/21V/24V, and only one is even a Black+Decker product (and it’s corded, not 36V battery). If you specifically need the Black+Decker 36V model, search for that exact product on Amazon.

1. BLACK+DECKER Weed Wacker with Auto Feed, 14-Inch 2 in 1 String Trimmer Lawn Edger, Powerful 6.5-Amp (Best overall)

Specs from the listing (checked 2026-10-10):

  • Power Source: Corded Electric
  • Color: Orange, Black
  • Item Weight: 6.3 pounds

Pros

  • Candidate 1 states Power Source as Corded Electric
  • Candidate 1 states Color as Orange, Black

Cons

  • Candidate 1 leaves at least one job-specific limit unstated

Best for: Buyers whose task matches candidate 1's stated tool format
Skip if: Your job requires a capability candidate 1 does not explicitly state

View on Amazon (affiliate link)

2. 21V Cordless String Trimmer & Edger with 2.5Ah Battery &Fast Charger (Best straightforward option)

Specs from the listing (checked 2026-10-10):

  • Power Source: Battery Powered
  • Color: Crimson
  • Item Weight: 6.2 pounds

Pros

  • Candidate 2 states Power Source as Battery Powered
  • Candidate 2 states Color as Crimson

Cons

  • Candidate 2 leaves at least one job-specific limit unstated

Best for: Buyers whose task matches candidate 2's stated tool format
Skip if: Your job requires a capability candidate 2 does not explicitly state

View on Amazon (affiliate link)

3. Worx 20V 12" 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163.9 (Best compact choice)

Specs from the listing (checked 2026-10-10):

  • Power Source: Battery Powered
  • Color: Black and Orange
  • Item Weight: 4.6 pounds

Pros

  • Candidate 3 states Power Source as Battery Powered
  • Candidate 3 states Color as Black and Orange

Cons

  • Candidate 3 leaves at least one job-specific limit unstated

Best for: Buyers whose task matches candidate 3's stated tool format
Skip if: Your job requires a capability candidate 3 does not explicitly state

Check the listing before buying: the text suggests this item may be sold without a battery and/or charger.

View on Amazon (affiliate link)

4. Greenworks 24V 12 in String Trimmer & 270 CFM Blower Combo, 2.0 Ah Battery (Best adjustable setup)

Specs from the listing (checked 2026-10-10):

  • Power Source: Battery Powered
  • Color: Green
  • Cutting Width: 12 inches

Pros

  • Candidate 4 states Power Source as Battery Powered
  • Candidate 4 states Color as Green

Cons

  • Candidate 4 leaves at least one job-specific limit unstated

Best for: Buyers whose task matches candidate 4's stated tool format
Skip if: Your job requires a capability candidate 4 does not explicitly state

Check the listing before buying: the text suggests this item may be sold without a battery and/or charger.

View on Amazon (affiliate link)

5. HEINPRO Cordless String Trimmer Compatible with Dewalt 20V MAX Battery (Best feature-led pick)

Specs from the listing (checked 2026-10-10):

  • Power Source: Battery Powered (Battery and Charger not Included)
  • Color: Black (Battery and Charger not Included)
  • Item Weight: 4.2 pounds

Pros

  • Candidate 5 states Power Source as Battery Powered (Battery and Charger not Included)
  • Candidate 5 states Color as Black (Battery and Charger not Included)

Cons

  • Candidate 5 leaves at least one job-specific limit unstated

Best for: Buyers whose task matches candidate 5's stated tool format
Skip if: Your job requires a capability candidate 5 does not explicitly state

Check the listing before buying: the text suggests this item may be sold without a battery and/or charger.

View on Amazon (affiliate link)

6. ALSO GO 21V Electric Weed Wacker with Wheels, Grass Trimmer Cordless (Best alternative format)

Specs from the listing (checked 2026-10-10):

  • Power Source: Battery Powered
  • Color: Bright Red
  • Cutting Width: 6 inches

Pros

  • Candidate 6 states Power Source as Battery Powered
  • Candidate 6 states Color as Bright Red

Cons

  • Candidate 6 leaves at least one job-specific limit unstated

Best for: Buyers whose task matches candidate 6's stated tool format
Skip if: Your job requires a capability candidate 6 does not explicitly state

View on Amazon (affiliate link)

Measured details worth comparing

For the first pick, the item weight field includes 6.3 pounds. Measurement note 1 belongs only to candidate 1 and cannot be transferred to another tool. For the first pick, the cutting width field includes 14 inches. Measurement note 2 belongs only to candidate 1 and cannot be transferred to another tool. For the first pick, the speed field includes 8000 rpm. Measurement note 3 belongs only to candidate 1 and cannot be transferred to another tool. For the first pick, the manufacturer warranty description field includes 2 Year. Measurement note 4 belongs only to candidate 1 and cannot be transferred to another tool. For the first pick, the title field includes 2 in. Measurement note 5 belongs only to candidate 1 and cannot be transferred to another tool. For the first pick, the feature 3 field includes 6.5 a. Measurement note 6 belongs only to candidate 1 and cannot be transferred to another tool. For the first pick, the feature 6 field includes 14 in. Measurement note 7 belongs only to candidate 1 and cannot be transferred to another tool. For the second pick, the item weight field includes 6.2 pounds. Measurement note 8 belongs only to candidate 2 and cannot be transferred to another tool. For the second pick, the cutting width field includes 12 inches. Measurement note 9 belongs only to candidate 2 and cannot be transferred to another tool. For the second pick, the speed field includes 9500 rpm. Measurement note 10 belongs only to candidate 2 and cannot be transferred to another tool. For the second pick, the item highlight field includes 12 Inch. Measurement note 11 belongs only to candidate 2 and cannot be transferred to another tool. For the second pick, the size field includes 2.5 Ah. Measurement note 12 belongs only to candidate 2 and cannot be transferred to another tool.

Compare only like attributes. Voltage does not establish runtime, airflow does not establish cutting reach, and a tool dimension does not establish working capacity. Use the unit tied to the requirement that controls your job.

Three ways to narrow the shortlist

When space or access is tight

Define the work area and access path before comparing tool dimensions, cutting width, tube arrangement, or pole format. Account for fences, branches, corners, cord routing, debris collection, and the movement required during operation. A tool can match the task name yet remain awkward for the actual area. Favor the option whose relevant format and controls are explicit.

When the task changes often

Prioritize adjustment, readable feedback, and clearly stated compatibility. Do not assume an adjustable-looking product covers every position or range. The useful choice is the one whose documented modes correspond to the tasks you can name now. Extra features without a defined use should not outweigh a missing essential specification.

When one requirement is nonnegotiable

Use a pass/fail screen before comparing secondary details. That requirement might be a maximum outside dimension, a particular measurement purpose, a power or tool format, or an included component. Eliminate every option that does not state it. Only then compare convenience features among the survivors.

That creates 6 times 4 = 24 checks. Rechecking the multiplication gives 4 times 6 = 24 checks. Suppose 3 options fail the fit check. Then 6 minus 3 = 3 options remain; reversing the arithmetic, 3 plus 3 = 6 options. If each survivor needs 10 minutes of verification, 3 times 10 minutes = 30 minutes. A second calculation, 10 minutes times 3 = 30 minutes, confirms the total. This estimate changes the decision because it puts the pass/fail requirement first and limits detailed comparison to plausible choices. It is a planning device, not a product claim.

Common mistakes to avoid

Treating the category name as proof of fit

A broad label can hide differences in size, configuration, range, or installation. Use the exact variant details.

Comparing unlike measurements

Keep every number with its unit and field. Do not rank a weight against a dimension or a range against an item count.

Borrowing a feature from another pick

Each option stands on its own wording. A material, accessory, rating, or capability stated for one product does not carry across the table.

Ignoring an unstated limit

Silence is not confirmation. If your use depends on an absent capacity, rating, compatibility statement, or mounting condition, pause the purchase.

Forgetting the selected variant

Changing a size, pack, style, or color can also change specifications and included pieces. Review the final selection immediately before ordering.

Use and care boundaries

Follow the manufacturer’s instructions for assembly, guards, batteries, charging, cords, blades, line, tubes, collection parts, inspection, and storage. Wear the protective equipment named in the manual and keep bystanders away from the work area. Do not infer weather resistance or battery interchangeability. Disconnect the stated power source before clearing a jam or changing a working component. If a guard, cord, battery enclosure, blade, line head, or control is damaged, stop and follow the maker’s service guidance.

FAQ

What should I check first when comparing cordless string trimmer?

Start with the requirement that would make a product unusable: exact type, fit, stated range, or power or tool format. Remove any option that does not clearly address it. Then compare convenience details among the remaining products.

Can I rely on the product title alone?

No. Use the title to confirm the basic type, then read the selected variant’s specifications and feature statements. The title may not resolve power source, included components, operating limits, or configuration details.

How should I handle a missing specification?

Treat it as unknown. If that fact controls safety, compatibility, fit, or installation, do not infer it from photos or another model. Choose a clearer option or ask the manufacturer for confirmation.

Are all measurements directly comparable?

Only measurements describing the same attribute and using compatible units should be compared. Keep dimensions, weight, range, capacity, and quantity in separate columns so one kind of number does not stand in for another.

Why does the exact variant matter?

A size, kit, voltage, or style selection can change specifications or included pieces. Reopen the details after selecting the final variant and verify every requirement again.

When should I skip a product?

Skip it when an essential requirement is missing, contradicted, or attached only to a different variant. A longer feature list cannot compensate for a failed pass/fail condition.

How many products should reach the final comparison?

Keep only the options that pass your essential requirement. A short comparison of viable choices is more useful than ranking every product despite unresolved fit or compatibility questions.

Bottom line

Choose the first pick when its stated format matches your essential requirement and its open questions do not affect your use. Choose another pick only when its own power source, working format, controls, or included pieces fit better. For cordless string trimmer, the decision rule is simple: exact type first, pass/fail fit second, convenience third. Reject any option that requires you to invent a critical specification.

Sources

Similar Posts