4 Best Electric String Trimmer and Edger Combos: Real Runtime, Noise, and Battery Costs

You’ve probably done the walk. The one where you pace the edge of your driveway, look at the grass creeping over the concrete, and wonder if you really need to drag out two separate tools. A string trimmer for the fence line. An edger for the walkway. Then you check the price of both and decide the overgrown look isn’t so bad.

A good combo tool solves that problem. The best electric string trimmer and edger models switch between trimming and edging without a second battery platform or a second storage rack. The trick is knowing which ones actually edge well, how long the batteries last, and what replacement line will cost you over a season.

We looked at four cordless models that cover different yard sizes and budgets. The ALSO GO 24V leads for raw cutting versatility. The RAXONE 21V is the simplest auto-feed option. The WeGofly 13″ handles bigger jobs with a brushless motor. The denqir 14″ adds a wheel and the widest swath. Here’s how they compare, with the trade-offs spelled out.

Here’s a quick spec comparison to see how these four stack up before reading the full reviews.

Features	ALSO GO 24V	RAXONE 21V	WeGofly 13″	denqir 14″
Motor & Speed	650W copper, 11,000 RPM	9,500 RPM	15,000 RPM brushless	800W brushless, 20,000 RPM
Cutting Width	Not specified	12 inches	13 inches	14 inches
Battery & Run Time	2x 24V 2.0Ah	2x 21V 2.0Ah	2x 21V 6.0Ah	2x 21V 3.0Ah, ~100 mins total
Blade/Line System	5 replaceable blades	Auto-feed, 10 lines	Lines, metal, saw blades	8 spools included
Best Use Case	Overgrown, mixed vegetation	Medium yards, simple edging	Large yards, heavy brush	Small to medium, wheeled support

24V Electric Weed Wacker

The ALSO GO 24V is the most versatile tool in this group. Five different blade types let you swap between plastic blades for tender grass, metal blades for thick weeds, and a saw blade for branches and shrubs. That range makes it a solid pick if your yard has more than just grass to manage.

The telescopic pole adjusts from 35 to 47 inches, so it fits different heights without hunching. The pivoting head handles slopes and tight corners well. And the auxiliary wheel takes weight off your arms when you’re working along a long fence line. Two 24V 2.0Ah batteries give you a spare to swap in.

Here’s the honest part. That 650W copper motor runs hot. The manufacturer recommends resting it 15 minutes after every 30 to 45 minutes of continuous use. If you have a large yard and want to knock it out in one go, that cooling break will slow you down. Also, blade changes take a little practice the first time.

• 650W pure copper motor with 11,000 RPM no-load speed
• Five interchangeable blade types for different vegetation
• Telescopic shaft adjusts 35 to 47 inches
• Dual safety lock switches prevent accidental starts
• Includes two 24V 2.0Ah lithium batteries

Best for: Homeowners with mixed vegetation who want one tool that can trim grass, cut weeds, and prune light branches.

21V Electric Weed Wacker

The RAXONE 21V keeps things simple. It’s a string trimmer with an auto-feed head and a 12-inch cutting width. No blade swapping, no complex setup. If you want to pull it out, trim the edges, and put it away, this is the least fussy option here.

Auto-feed is the standout feature. The trimmer advances line automatically as you work, so you don’t bump the head or stop to pull more line out. That matters when you’re edging along a sidewalk and don’t want to break your rhythm. The head rotates 90 degrees to switch from trimming to edging, and it tilts from 0 to 90 degrees for slopes and corners.

The trade-off is power. At 9,500 RPM, this trimmer handles normal grass and light weeds fine, but it will bog down in thick, wet overgrowth. The 2.0Ah batteries are on the smaller side too. For a medium yard, you’ll probably get through the job, but a large property will need both batteries and maybe a recharge break.

• 9,500 RPM motor for residential trimming
• 12-inch cutting width covers ground quickly
• Auto-feed system advances line without bumping
• Includes 10 replacement trimmer lines
• Two 2.0Ah batteries with fast charger

Best for: Homeowners with medium yards who want simple, reliable trimming and edging without blade changes or bump-feed hassle.

WeGofly 13″ Electric Weed

The WeGofly 13″ is the heavy-duty option. A 15,000 RPM brushless motor paired with steel gears gives it more sustained cutting power than the other models here. It works as a string trimmer, edger, mini mower, and brush cutter, so it covers more ground than a standard 2-in-1 combo.

Two 21V 6.0Ah batteries are the real story. That’s triple the capacity of the RAXONE and denqir batteries. You can finish a large yard without swapping batteries or waiting for a charge. The brushless motor also runs cooler and lasts longer than brushed motors, which addresses the burnout issue common in cheaper trimmers.

Nothing is perfect. The 5.2-pound weight is light for its power class, but the larger batteries add heft when attached. And the 4-in-1 design means more parts to keep track of. If you lose the metal blades or saw blade, replacements aren’t as easy to find as standard trimmer line.

• 15,000 RPM brushless motor with steel gear set
• 13-inch cutting width for efficient coverage
• Two 21V 6.0Ah batteries for extended runtime
• 4-in-1 design: trimmer, edger, mower, brush cutter
• Weighs 5.2 pounds for reduced arm fatigue

Best for: Large yards and properties with heavy weeds, brush, or small shrubs that need a tool with real staying power.

14″ Electric String Trimm

The denqir 14″ stands out for one reason: the wheel. A support wheel turns this from a handheld trimmer into something closer to a wheeled edger. You push it along the edge of your driveway or sidewalk instead of carrying it. For anyone with back or shoulder issues, that’s a meaningful difference.

The 800W brushless motor spins at 20,000 RPM, the highest speed in this group. The 14-inch cutting width is also the widest here, so you cover more ground per pass. Two 3.0Ah batteries give you up to 100 minutes of total runtime, and the kit includes eight replacement spools. That’s roughly a full year of line for most homeowners.

The wheel helps on flat edges, but it’s less useful on slopes or uneven ground. The head adjusts vertically and horizontally, which helps, but you’ll still lift it for tight corners. The 14-inch swath is great for open areas but can be awkward near flower beds where you need precision.

• 800W brushless motor with 20,000 RPM speed
• 14-inch cutting width for fast coverage
• Upgraded wheel for wheeled edging support
• Two 3.0Ah batteries with up to 100 minutes total
• Eight replacement spools included

Best for: Homeowners who want wheeled support for edging driveways and walkways, especially those who find handheld trimming tiring.

How We Chose These Products

We started with the specs that actually affect your experience: motor type, battery capacity, cutting width, and whether the tool converts to an edger. Then we looked at what the product data didn’t say. How long does the motor run before it needs a break? How many batteries do you get, and what’s the real cost of spares? Does the edging function work well enough to replace a dedicated tool?

We also weighed the practical stuff. Storage footprint. Line replacement cost. Whether the brand sells proprietary spools. And whether the tool fits the person using it. A trimmer that’s too heavy or too tall for you won’t get used, no matter how good the specs look on paper. For more options beyond these four, see our guide to the best electric grass trimmer models.

Buying Guide: What Really Matters

Voltage and amp-hours get the most attention, but they don’t tell the whole story. A 24V 2.0Ah battery has less total energy than a 21V 6.0Ah battery. The WeGofly’s 6.0Ah packs hold roughly three times the energy of the RAXONE’s 2.0Ah packs. That’s why the WeGofly runs longer despite a lower voltage number.

Motor type matters more than raw wattage. Brushless motors run cooler, last longer, and use less power for the same output. The ALSO GO uses a brushed copper motor, which is why it needs cooling breaks. The WeGofly and denqir use brushless motors, which handle longer sessions without overheating.

Edging performance varies a lot. The RAXONE rotates its head 90 degrees for edging, which works well on flat surfaces. The denqir adds a wheel for stability. The ALSO GO doesn’t have a dedicated edger mode, but its pivoting head gets close. If clean, sharp edges matter more than trimming, a dedicated edger might still be worth it. Check our best electric yard edger picks for that.

Runtime and charge time are where cheap trimmers fall apart. The ALSO GO’s 2.0Ah batteries will get most people through a medium yard, but not a large one. The WeGofly’s 6.0Ah batteries will. Budget for a spare battery if you have more than a quarter acre. Replacement batteries often cost as much as a third of the trimmer itself.

Noise levels matter if you have close neighbors or HOA quiet hours. Electric trimmers typically run between 75 and 85 decibels. That’s quieter than gas, but not silent. The brushless models here run smoother and tend to produce less vibration, which helps with noise fatigue.

Our Top Recommendation

The WeGofly 13″ is our top pick for most homeowners. The 6.0Ah batteries give it the runtime to finish a large yard in one session. The brushless motor and steel gears handle thick weeds without bogging down. And the 4-in-1 design means you can trim, edge, mow, and cut brush without buying separate tools. It costs more upfront, but the battery capacity and durability justify the price for anyone with real yard work to do.

For smaller yards and tighter budgets, the RAXONE 21V is the better value. Auto-feed saves time, and the 12-inch swath is fine for typical suburban lots. If you want wheeled edging support, the denqir 14″ is the pick. And if you need blade versatility for mixed vegetation, the ALSO GO 24V covers more cutting types than anything else here.

Frequently Asked Questions

Do I really need a separate edger if my trimmer converts?
It depends on how crisp you want your edges. A converted trimmer works fine for basic cleanup along fences and walkways. But it won’t cut a deep, clean trench like a dedicated edger. If your HOA inspects edges or you take pride in sharp lines, a dedicated edger is worth the extra storage space. For most people, a combo tool is enough.

How much does replacement line cost per season?
Standard round trimmer line runs a few dollars for a spool. The RAXONE includes 10 lines, and the denqir includes 8 spools. Those will last most homeowners a full season. The catch is proprietary spools. If a brand uses a custom spool design, you have to buy from them. Check before you buy a tool that only takes one type of line.

Can I leave the battery in the trimmer during winter storage?
No. Take the battery out and store it indoors at room temperature. Cold drains lithium batteries and can damage the cells. Charge it to about half capacity before storing, then top it off before spring. Store the trimmer itself clean and dry, with the cutting head off the ground if possible.

What’s the actual difference between 2.0Ah and 6.0Ah batteries?
Ah stands for amp-hours. A 6.0Ah battery holds three times the energy of a 2.0Ah battery at the same voltage. In practice, that means three times the runtime. The downside is weight and cost. A 6.0Ah battery weighs more and costs more to replace. For small yards, 2.0Ah is fine. For large yards, 6.0Ah saves you from constant battery swaps.

For more options and comparisons, see our best string trimmer edger combo guide.