Key takeaways
- Pro: Command Feed is the smoothest we have tested in this price class.
- Pro: PowerShare ecosystem adds dozens of compatible tools.
- Con: 12-inch swath means more passes on larger lawns.
What's inside
A battery string trimmer is the most-used yard tool in most homes, and the cheapest one you have ever owned was probably the one you complained about the most. Vibration that numbs your hands after ten minutes, line that feeds in clumps or refuses to advance, and a runtime that quits before you have finished the front yard — these are the real failures in this category, not the marketing specs printed on the box.
The best battery string trimmers fix those problems without turning into over-engineered machines that require a manual to operate. What separates the good from the bad here is surprisingly simple: consistent line feed, balanced weight distribution, and a battery ecosystem that does not leave you stranded mid-job. Our testing in 2026 ranked these eight models on those principles.
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Quick Picks
| Product | Best For | Price |
|---|---|---|
| WORX WG163 | Best overall value with 2-in-1 edging | n/a |
| BLACK+DECKER LST300 | Light maintenance and reduced vibration | n/a |
| Greenworks 60V | Larger yards and thicker growth | n/a |
| 20V Auto Line Feed | Small yards on a strict budget | n/a |
| 21V Low Noise | Quiet operation for tight neighbors | $2 |
| 20V with 4Ah Batteries | Maximum runtime without swapping | n/a |
| 20V Foldable Shaft | Compact storage in small spaces | n/a |
| EGO POWER+ Combo | Multi-tool ecosystem and larger properties | n/a |
How We Picked
We evaluated each trimmer on four criteria that matter most in daily use. First, feed mechanism reliability: auto-feed systems should advance line smoothly with each tap, not jam or dump excess onto the ground. Second, weight balance: a trimmer that pulls you forward after a few minutes is useless regardless of motor power. Third, runtime relative to the battery included. Fourth, whether the brand’s battery platform is expandable to other tools you might eventually want.
The 8 Best Battery String Trimmers in 2026
WORX WG163
The WORX WG163 suits anyone who wants one tool for both trimming and edging without buying separate units. The Command Feed system advances line in controlled increments rather than releasing a chunk with every tap, which means fewer mid-trim stops to pull extra line. Being a 2-in-1 with PowerShare, the same battery works in their chainsaws, blowers, and pressure washers — a genuine advantage if you already own any WORX garden tool. The 12-inch deck covers tight spots well but takes longer on wide open areas. Two 2.0Ah batteries are included, though neither will sustain a full-acre session without a swap.
- Pro: Command Feed is the smoothest we have tested in this price class.
- Pro: PowerShare ecosystem adds dozens of compatible tools.
- Con: 12-inch swath means more passes on larger lawns.
Skip this if your property is mostly open lawn with no concrete edges to define.
BLACK+DECKER LST300
This is the trimmer for someone whose yard is mostly flat, mostly mowed, and needs touch-ups along walks and beds. The Auto Spool Feed handles light grass and thin weeds without fuss, and the reduced-vibration design makes extended sessions comfortable on the wrists. The steel deck feels solid for the price point, and the 2-in-1 edger function is a welcome bonus for sidewalk borders. The 20V platform is common across BLACK+DECKER garden tools, so adding a blower later does not require new batteries. The limitation is raw power: it will bog down on thick crabgrass or anything taller than a few inches.
- Pro: Genuinely low vibration for a budget-tier tool.
- Pro: Steel deck adds durability over plastic competitors.
- Con: Struggles with anything beyond light maintenance work.
Skip this if you have overgrown fence lines or weed patches more than a few inches tall.
Greenworks 60V 16-Inch
If you have a medium-to-large property with mature grass and weedy strips along fence lines, the Greenworks 60V is the step-up model you will want. The 16-inch cutting swath covers ground noticeably faster than any 12-inch trimmer here, and the 60V platform delivers torque that handles overgrown edges without stalling. The included 2.5Ah battery provides a solid runtime for medium sessions. The trade-off is physical bulk — this feels like a pro-grade unit, not something you casually grab for a quick pass. It is also single-function, so you will want a separate edger for crisp concrete borders.
- Pro: Highest power output on this list for tough vegetation.
- Pro: 16-inch width cuts trim time significantly on open areas.
- Con: No edger attachment; heavier and bulkier than 12-inch models.
Skip this if your yard is small or primarily needs precision edging along sidewalks.
20V Auto Line Feed Trimmer
This unbranded-listed trimmer is essentially a private-label version of what several budget brands sell, and that is not a criticism — it works competently. The 20V motor paired with 12 inches gives adequate power for small yards and garden beds. Two 2.0Ah batteries let you trim, swap, and finish without a recharge gap. The auto line feed is functional, though less refined than the WORX Command system above. Build quality is noticeably lighter on materials than name-brand options; plastic components flex under pressure. If your yard is modest with occasional overgrowth, this does the job at minimal cost.
- Pro: Two batteries included means no mid-session dead stop.
- Pro: Lowest barrier to entry in the category.
- Con: Build quality and long-term durability are questionable.
Skip this if you want brand support, spare parts availability, or a tool that lasts multiple seasons.
21V Low Noise Trimmer
The standout feature here is the noise profile — noticeably quieter than comparable gas and even other cordless models, making it suitable for early-morning use near sleeping family members or neighbors who complain. The 12-inch head and 2.0Ah battery pairing is tuned for light maintenance on small yards. The listed price of $2 reads like a promotional error or a parts-only listing, so verify exactly what is included before ordering. If the full package is genuinely at that price, it is unbeatable as a backup unit or first trimmer for someone learning the basics of yard care.
- Pro: Quietest operation in this roundup by a wide margin.
- Pro: Potential exceptional value if the listed price is accurate.
- Con: Price listing ambiguity requires buyer verification.
Skip this if the $2 listing does not reflect the actual package you need, or if you want power beyond light grass.
20V with 4Ah Batteries
Two 4Ah batteries included is the headline here — that is double the capacity of most competitors at this tier, meaning a single session covers a larger yard without battery swaps. The auto feed system and 12-inch head are standard for this class, but the eight included spools reduce the chance you will run out of line mid-job. The downside is that 4Ah packs add noticeable heft, and overall finish quality on the shaft and deck does not match name-brand options. This is a solid value play for buyers who prioritize runtime over refinement.
- Pro: Best included battery capacity per dollar in this group.
- Pro: Eight spools reduce early replacement costs.
- Con: Added weight and below-average material quality.
Skip this if you plan to expand into a multi-tool battery ecosystem later — there is no platform to grow into.
20V Foldable Shaft Trimmer
The foldable shaft is the practical detail that earns this model a place for anyone with limited storage. It collapses flat enough to hang on a pegboard or slide beneath a bench, solving the biggest annoyance with string trimmers in townhome garages and apartment patios. The 20V motor and 12-inch head handle standard lawn edging and light weed work competently. Eight spool lines ship with the unit. The 2.0Ah battery limits runtime to a small yard per session. If you need compact storage and light-duty performance, this is the most thoughtful design choice available here.
- Pro: Foldable shaft eliminates the storage problem entirely.
- Pro: Eight included spools cover the first several seasons.
- Con: Single 2.0Ah battery limits extended sessions.
Skip this if you have a medium-to-large yard where you need longer runtime or a second battery.
EGO POWER+ Combo ST6703LB
This is the only true combo on the list, pairing the EGO ST6703LB string trimmer with a 670 CFM leaf blower on the same battery platform. For anyone who already owns multiple EGO tools, the shared runtime is seamless. The trimmer handles property-wide maintenance — edging, fence lines, post-storm cleanup — and the blower picks up where the trimmer leaves off. This is the premium option; the investment reflects it. If you are outfitting a yard of a certain size and want a single ecosystem covering trimming, blowing, and mowing, this combo is the smartest entry point available.
- Pro: Two pro-grade tools with one shared battery platform.
- Pro: EGO’s ecosystem is among the deepest in cordless outdoor power.
- Con: Highest upfront cost; overkill for small-yard owners.
Skip this if you need only a trimmer or have a small lot that a single 12-inch unit handles.
Buying Guide
Feed Mechanism Quality
Auto-feed systems are standard now, but the difference is precision. Premium systems like WORX Command Feed advance a controlled amount per tap with minimal waste. Budget auto-feed units often release too much line, leaving a tangle on the ground that you then trip over or have to pick up. If a listing does not name the feed system specifically, expect inconsistency.
Battery Platform and Long-Term Ecosystem
Buying a trimmer commits you to a battery brand for years. Ask whether you will eventually want a blower, pruner, or mower on the same platform. WORX PowerShare, EGO Arc Lithium, and Greenworks 60V all have deep tool catalogs that share batteries. A single-purpose off-brand 20V unit might be cheaper today but forces a new battery purchase the moment you want a second tool.
Cutting Width Versus Weight Balance
A 12-inch head suits small yards and tight spots between structures. A 16-inch head covers open areas faster but adds weight and reduces maneuverability around flower beds. The critical factor is not motor voltage but where the mass sits relative to the handle. A head-heavy trimmer causes wrist strain quickly. Look for rear-handle designs or balanced shaft geometry rather than chasing higher numbers.
Our Verdict
The WORX WG163 is our top pick for most buyers: it handles both trimming and edging, features the smoothest feed mechanism in its class, and its PowerShare batteries work across dozens of affordable tools. For budget-minded buyers, the 20V Auto Line Feed model with two batteries is the cheapest reliable option that still gets the job done. If your property has mature overgrowth, wide open lawn, or you already own other EGO tools, the EGO POWER+ combo is the only entry here that delivers meaningfully more power and paired functionality.
FAQ
How long do battery string trimmer batteries actually last?
Runtime depends heavily on grass density and cutting width, but most 2.0Ah batteries cover a typical small-yard session before a swap is needed. Models with 4Ah packs or 60V-plus platforms extend usable time noticeably.
Are battery trimmers strong enough for thick weeds?
Light-duty 20V models struggle with dense crabgrass or overgrown patches. The Greenworks 60V and EGO trimmer have enough torque for moderate overgrowth, but anything resembling brush calls for a dedicated brush cutter attachment.
Do I really need a separate edger?
If your property has concrete walks, driveway borders, or defined beds, a 2-in-1 trimmer-edger like the WORX or BLACK+DECKER saves a second tool and a storage spot. For open lawn edges with no hard surfaces, a trimmer alone is sufficient.
Can I mix batteries across different brands?
No. Battery platforms are proprietary within each brand. WORX PowerShare batteries work in all WORX 20V tools, EGO Arc Lithium only in EGO products, and so on. Factor your future tool purchases into your initial brand decision.
