Best Battery Weed Wacker Reviews: 5 Cordless Trimmers That Actually Cut It

Saturday morning, and your gas trimmer won’t start. Again. You’ve pulled the cord twenty times, fiddled with the choke, and now your neighbor is watching from the porch with a coffee and a smirk. We’ve all been there. The gas can is empty, the mix is stale, and the noise has the whole block’s dogs barking.

Battery trimmers used to be the weak alternative — fine for a tiny city lawn, useless for anything with actual weeds. That’s changed. Modern brushless motors, higher voltage platforms, and smarter feed systems have closed the gap. A good cordless weed wacker now starts instantly, runs quietly, and handles thick overgrowth that would stall older models.

I tested five of the most promising battery trimmers on the market. I ran them through tall Bahia grass, tangled blackberry vines, and delicate flower bed edges. I measured real runtime under heavy load, not just the optimistic numbers on the box. Here’s what I found, plus a clear winner for most homeowners.

Here’s a quick look at the key specs that separate these five trimmers.

Features	WORX WG163	BLACK+DECKER LST300	Greenworks 60V	WeGofly 13″	goodjob 20V
Voltage / Power	20V motor	20V MAX	60V brushless	2x21V (42V)	20V lithium
Cutting Width	12 inches	12 inches	16 inches	13 inches	12 inches
Feed System	Push-button	Auto feed	Spin-to-load	Manual / blade	Auto feed
Weight	Not specified	Lightweight	11.2 lbs	5.2 lbs	3.5 lbs
Best For	Edging & slopes	Small-medium yards	Heavy overgrowth	Versatile cutting	Light trimming

WORX 20V 12″ 2-in-1

The WORX WG163 is the Swiss Army knife of this group. It’s a string trimmer and an edger in one, and the head tilts 90 degrees so you can handle slopes and awkward angles without contorting your body. If your yard has flower beds, retaining walls, or a sidewalk that needs a crisp edge, this tool earns its place in the shed.

What stands out here is the push-button line feed. No bumping, no tapping, no guessing — just press a button and the line advances. WORX also gives you free spools for life, which is a rare perk that cuts long-term costs. The rubberized wheels on the edger mode keep the head at a consistent height, so your edges come out straight instead of wavy.

The trade-off? This is a 20V machine, so it’s not built for blackberry thickets or neglected lots. It’ll handle regular grass and light weeds, but heavy-duty jobs will bog it down. The cutting width is 12 inches, which means more passes on larger lawns. And the adjustable spacer guard is handy, but it takes a moment to set correctly the first time.

• 2-in-1 trimmer and edger with 90-degree tilting head
• Push-button instant line feed system
• Rubberized wheels guide edging for straight lines
• Adjustable spacer guard protects plants and ornaments
• Free spools for life program

Best for: Homeowners who edge as often as they trim and want one tool for both jobs.

BLACK+DECKER 20V MAX String Trimmer

The BLACK+DECKER LST300 feels like the sensible sedan of battery trimmers. It’s not flashy, but it does everything competently. The 20V MAX motor spins at 6200 RPM, which is respectable for a cordless trimmer at this level. The automatic feed spool (AFS) means you never bump the head — it feeds line automatically when needed. That sounds great until you realize it can also feed when you don’t need it, wasting line. But for most users, the convenience wins.

This trimmer is quiet and starts instantly. No pull cords, no priming, no flooding. The adjustable handle and height positions make it comfortable for different user heights, and the reduced vibration helps during longer sessions. It converts to an edger in seconds, which is a nice bonus even if the WORX does it better with the wheel guide.

Where it falls short is power. This is a light-duty machine. Thick weeds, wet grass, or overgrown ditches will make it strain. The 12-inch cutting swath is standard, but the steel deck feels durable. Battery life is adequate for a small to medium yard, but don’t expect to clear an acre on one charge. The AFS system also uses a proprietary spool, so aftermarket line can be tricky to load.

• 6200 RPM POWERDRIVE transmission
• Automatic feed spool – no bumping required
• 2-in-1 trimmer and edger conversion
• Lightweight with adjustable handle and height
• Quiet operation, low vibration

Best for: Budget-conscious buyers with small to medium lawns who want a simple, no-fuss trimmer.

Greenworks 60V 16 in Cordless

The Greenworks 60V is the heavyweight here. With a brushless motor delivering 6000 RPM, it claims to match a 26cc gas trimmer. In my testing, it chewed through 1-inch thick blackberry vines and stubborn kudzu without slowing down. If your property has real overgrowth, this is the one that won’t quit.

The 16-inch cutting swath is the widest in this group, meaning fewer passes along a fence line or ditch. The spin-to-load head is a genuine time-saver — you twist the housing and pull to reload.095-inch line in about 10 seconds. No manual winding, no mess. The 2.5Ah battery is rated for up to 1.5 acres per charge, and it recharges in 45 minutes. That’s impressive for a 60V pack.

But here’s the catch: it weighs 11.2 pounds with the battery. That’s lighter than a toddler, as the marketing says, but it’s still heavy for a trimmer. The 360-degree rotating handle helps reduce wrist strain, but your shoulders and back will feel it after a long session. The battery is also Greenworks-specific, so if you don’t already own their tools, you’re starting a new platform. And the price is higher than the others, though you’re paying for that power.

• 60V brushless motor – equivalent to 26cc gas
• 16-inch cutting swath, dual-line system
• Spin-to-load head – reload in 10 seconds
• 2.5Ah battery, 45-minute recharge
• 360-degree rotating handle

Best for: Owners of larger properties with heavy weeds who want gas-like power without the gas engine.

WeGofly 13″ Electric Weed Wacker

The WeGofly is a wildcard. It’s a 4-in-1 tool that works as a string trimmer, edger, mini mower, and brush cutter. It comes with three types of cutting heads: trimmer line, metal blades, and saw blades. That versatility makes it a genuine option for someone who needs to clear a path, cut small shrubs, and maintain a lawn edge — all with one device.

The dual 21V batteries (6.0Ah each) are the real story here. That’s a combined 42V of power and a total of 12.0Ah of capacity. In practice, that means you can work for a long time without stopping to recharge. The brushless motor spins at 15,000 RPM, and the steel gear set prevents jamming. It’s a solid performer for a tool at this price point.

But there are trade-offs. The 13-inch cutting width is fine, but the head and pole adjustments take some fiddling to get right. The weight is listed at 5.2 pounds, which is light, but the balance feels front-heavy when you attach the metal blade. And while the 4-in-1 functionality is clever, the mini mower mode is more of a gimmick — it’s not going to replace your actual mower. The batteries also take a while to charge, so plan ahead.

• 4-in-1: trimmer, edger, mini mower, brush cutter
• 3 cutting heads: line, metal blade, saw blade
• 2 x 21V 6.0Ah batteries for extended runtime
• 15,000 RPM brushless motor with steel gears
• 13-inch cutting width, adjustable head and pole

Best for: DIYers who want one tool to handle a variety of cutting jobs without buying separate machines.

20V Cordless Weed Wacker by goodjob

The goodjob 20V weed wacker is the featherweight champion. At 3.5 pounds, it’s the lightest trimmer here by a significant margin. If you have back problems, shoulder issues, or just hate lugging heavy equipment around, this is the one that won’t leave you sore. It’s also one of the quietest, operating below 75 decibels.

It comes with two 2.0Ah batteries, which together give you 40-60 minutes of runtime. That’s enough for a typical small to medium lawn. The auto feed system works well, and the 180-degree pivoting head lets you reach under fences, around trees, and into tight corners. The 12-inch cutting swath is standard, and the.065-inch line handles regular grass and light weeds without issue.

The downside is power. This is strictly a light-duty tool. It’ll keep your lawn tidy, but don’t expect it to tackle overgrown ditches or thick brush. The batteries take a few hours to charge, so if you have a large property, you’ll be waiting. And the build quality feels a bit plasticky — it’s fine for occasional use, but not for weekly abuse.

• 3.5 lbs ultra-lightweight design
• 2 x 2.0Ah batteries, 40-60 min runtime
• 3-in-1: trimmer, edger, weed cutter
• Auto feed system, 180-degree pivoting head
• Quiet operation below 75 dB

Best for: Older homeowners, renters, or anyone with a small yard who wants a light, quiet, low-maintenance trimmer.

How We Chose These Products

I started by looking at what actually matters when you’re buying a battery trimmer. Voltage and amp-hours tell you something, but they don’t tell you everything. I focused on real-world cutting ability, runtime under load, and how each tool feels after twenty minutes of use.

I tested each trimmer on three types of terrain: regular lawn grass, tall weedy patches, and light brush. I also paid attention to how easy the line feed system was to use, how long it took to reload, and whether the battery charge lasted as long as claimed. Ergonomics played a big role — a trimmer that’s painful to hold isn’t worth any amount of power.

I also considered the bigger picture. A trimmer is often your entry point into a battery platform. If you buy a Greenworks trimmer, you’re likely to buy their blower and mower later. That ecosystem value matters. I weighed that alongside the upfront cost and the specific needs of different yard types.

Buying Guide: What Really Matters

Voltage gets all the attention, but torque is what actually cuts. A 20V trimmer with a good motor can outperform a 40V with a weak one. Look for brushless motors — they’re more efficient, last longer, and deliver more power. The Greenworks 60V is a clear example of how higher voltage translates to real cutting force.

The feed system is something you’ll interact with every single time you use the trimmer. Bump feed heads are traditional but require a firm tap on the ground. Auto feed systems are convenient but can waste line. Spin-to-load heads, like the Greenworks, are the fastest to reload but require a specific technique. Consider which one you’ll actually tolerate on a hot day.

Battery platform is a long-term commitment. If you already own a drill or blower from a specific brand, stick with that ecosystem. If you’re starting fresh, look at the range of tools available. WORX and BLACK+DECKER have broad platforms, while Greenworks and WeGofly are more specialized. Also, think about battery health — lithium-ion batteries degrade if stored fully charged in a hot garage. Keep them at around 50% charge in a cool place during the off-season.

Our Top Recommendation

The Greenworks 60V is the best battery weed wacker for most people who need real power. It handles heavy overgrowth that would stall other cordless models, the 16-inch swath speeds up the job, and the spin-to-load head is genuinely easier to use than any bump feed. The weight is a trade-off, but the rotating handle helps. If you have a quarter-acre or more, this is the one.

For a smaller yard or a tighter budget, the WORX WG163 is the smart pick. Its edger mode with the wheel guide is the best in this group, and the push-button line feed is foolproof. If you’re looking for the absolute lightest option for occasional touch-ups, the goodjob 20V is surprisingly capable for its weight. And the WeGofly is worth a look if you want a single tool that can also cut brush with a metal blade.

Frequently Asked Questions

How long does a battery weed wacker actually run?

It depends on the load. Trimming light grass on a well-maintained lawn, you’ll get close to the manufacturer’s estimate. Hit thick weeds or wet grass, and runtime can drop by 30-40%. The Greenworks 60V lasted about 45 minutes in my heavy-duty test, while the goodjob’s two batteries gave about 50 minutes of light trimming. Always buy a trimmer with at least two batteries if you have a larger lawn.

Can I use aftermarket trimmer line in these spools?

Some brands are proprietary. The BLACK+DECKER AFS spool is designed for their specific line, and the WORX uses a similar system. The Greenworks spin-to-load head accepts standard.095-inch line, which is easy to find anywhere. If you want flexibility, check the line diameter and whether the spool is standard or brand-specific before you buy.

Is a 60V trimmer worth the extra cost over 20V?

If you have thick weeds, a large property, or you’re tired of bogging down, yes. The 60V Greenworks cut through blackberry vines that stopped the 20V models cold. But if your yard is mostly grass and you’re trimming for 15 minutes at a time, a 20V will save you money and weight. Match the tool to the job.

How do I store a battery trimmer for winter?

Remove the battery and store it separately at around 50% charge. Keep it in a cool, dry place — not a freezing garage or a hot shed. For the trimmer itself, clean off any grass and debris, and check the line. Reload fresh line before spring so it’s ready to go. Avoid leaving the battery on the charger all winter; that can shorten its lifespan.

For more options, check out our guides on battery-powered weed trimmers and weed wacker and edger combos. You can also see how these models stack up in our battery weed eater reviews.