Best BLACK+DECKER Cordless String Trimmers (2026)
The best Black+Decker cordless string trimmers across the brand's 20V and 40V platforms, compared by cutting swath, 2-in-1 function, and price.
At a Glance
BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed
↓ See why we picked itBlack+Decker 40V MAX 13 Inch String Trimmer and Lawn Edger with Battery and Charger
↓ See why we picked itBLACK+DECKER 40V MAX 13 in String Trimmer Edger Cordless with Adjustable Telescoping Pole, 2 in 1
↓ See why we picked itBlack+Decker offers string trimmers across two voltage tiers, a widely available 20V MAX line and a higher-power 40V MAX line with telescoping and edging features. We compared three current genuine Black+Decker models across these tiers.
3 Criteria to Look For Before Buying a BLACK+DECKER Cordless String Trimmers (2026)
Key buying criteria so you get the right fit the first time.
Voltage Tier Selection
Black+Decker's 20V and 40V string trimmer lines aren't cross-compatible, so choosing a tier means committing to that battery ecosystem for future tool purchases.
Match the tier to your actual yard size, since 20V is generally sufficient for routine residential maintenance while 40V suits larger properties or thicker growth.
2-in-1 Trimmer and Edger Function
All three models here double as both a string trimmer and an edger, a genuine value feature beyond just trimming grass along a single function.
This Black+Decker lineup consistently includes this feature, a meaningful advantage if you want both functions without buying separate tools.
Telescoping Pole Adjustability
One model here includes an adjustable telescoping pole, letting you customize the tool's length for your height and comfort during extended use.
This matters more if you're notably tall or short, where a fixed pole length might feel awkward.
Best BLACK+DECKER Cordless String Trimmers (2026)
BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed
About this pick
This complete kit doubles as both a trimmer and edger with automatic line feed, at an accessible price for routine residential yard maintenance.
From one of the longest-established names in home power tools, this is the strongest overall pick for most buyers wanting 2-in-1 functionality.
Best for: most buyers wanting a complete, versatile 2-in-1 kit
Check price on AmazonSpecs
- Function: Trimmer and Edger
- Feed: Auto Spool
- System: 20V MAX
Pros
- +Genuinely complete kit, battery and charger included
- +Auto spool feed avoids manual line adjustment hassle
- +Doubles as both a trimmer and an edger
Cons
- −20V power may be limited for thick, overgrown weeds
- −No telescoping pole for adjustable length overall
Black+Decker 40V MAX 13 Inch String Trimmer and Lawn Edger with Battery and Charger
About this pick
Stepping up to Black+Decker's 40V MAX platform, this model pairs a wider 13-inch swath with more sustained power for larger yards or thicker growth.
Still a 2-in-1 trimmer and edger with battery and charger included, this is the strongest pick for a larger property than the 20V model handles comfortably.
Best for: larger properties needing more power and wider swath
Check price on AmazonSpecs
- Swath: 13-Inch
- System: 40V MAX
- Function: 2-in-1
Pros
- +Wider 13-inch cutting swath than the 20V pick
- +More sustained 40V power for thicker growth
- +Genuinely complete kit, battery and charger included
Cons
- −Higher price than the 20V complete kit here
- −40V batteries aren't compatible with 20V Black+Decker tools
BLACK+DECKER 40V MAX 13 in String Trimmer Edger Cordless with Adjustable Telescoping Pole, 2 in 1
About this pick
This model adds an adjustable telescoping pole to the same 40V platform, letting you customize the tool's length for your specific height and comfort.
At a meaningful premium over the standard 40V pick, this is worth considering if a customizable pole length matters for extended comfortable use.
Best for: buyers wanting a customizable pole length for comfort
Check price on AmazonSpecs
- Pole: Adjustable Telescoping
- System: 40V MAX
- Function: 2-in-1
Pros
- +Adjustable telescoping pole customizes length for comfort
- +More sustained 40V power for thicker growth
- +Doubles as both a trimmer and an edger
Cons
- −Higher price than the standard 40V complete kit
- −Telescoping joint adds a potential wear point over time
How We Evaluated These BLACK+DECKER Cordless String Trimmers (2026)
Each pick was assessed across 3 criteria weighted for real-world use.
Real, Current Listings
All three products are currently listed genuine Black+Decker string trimmers verified against live Amazon catalog data for price and stated specifications.
Voltage Tier Verification
We confirmed each model's specific voltage tier and cross-checked that batteries are not interchangeable between the 20V and 40V platforms.
Feature Comparison
We compared 2-in-1 edger functionality and telescoping pole adjustability across all three models.
How to Choose the Right BLACK+DECKER Cordless String Trimmers (2026)
By Yard Size
| Yard Size | Recommended Pick |
|---|---|
| Standard residential | 20V MAX 2-in-1 |
| Larger property, thicker growth | 40V MAX Standard |
| Need customizable pole length | 40V MAX Telescoping |
By Budget
| Budget | Recommended Pick |
|---|---|
| Lowest cost complete kit | 20V MAX 2-in-1 |
| Higher power, standard pole | 40V MAX Standard |
| Higher power, adjustable pole | 40V MAX Telescoping |
20V vs. 40V: The Verdict
The right tier depends on your actual yard size and growth density.
Choose 20V if
Standard residential yard maintenance is your primary use case.
Choose 40V if
Your property or growth density genuinely calls for more sustained power.
By Pole Adjustability
| Priority | Recommended Pick |
|---|---|
| Adjustable telescoping pole | 40V MAX Telescoping |
| Fixed pole is fine | 20V MAX or standard 40V MAX |
For Existing Black+Decker Battery Owners Specifically
Look for
Whether you already own 20V or 40V Black+Decker batteries before choosing a trimmer tier.
In this comparison
Each tier's battery is shared only within that same voltage platform.
When to Spend More
Spend more if
You want more sustained power and a customizable telescoping pole on 40V.
Save if
Standard residential yard maintenance on 20V meets your needs.
Frequently Asked Questions
What voltage tiers does Black+Decker offer for string trimmers?
Black+Decker currently offers 20V MAX and 40V MAX tiers for string trimmers, with the 40V line delivering more sustained power and a wider cutting swath.
Are Black+Decker 20V and 40V batteries interchangeable?
No, the two voltage platforms use different, non-interchangeable batteries, so choosing a tier means committing to that ecosystem for future tool purchases.
Do all Black+Decker string trimmers double as edgers?
Yes, all three models compared here include 2-in-1 trimmer and edger functionality, a consistent feature across Black+Decker's current string trimmer lineup.
Is a telescoping pole worth the extra cost?
It's worth it if you're notably tall or short and want to customize the tool's length for comfortable extended use, though it's not essential for most buyers.
Bottom Line
best overall: BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed - best overall pick in this roundup.
See the full rankings above for all picks with pros, cons, and best-for summaries.
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