HEINPRO 14″ Cordless Lawn Mower… vs BLACK+DECKER Weed Eater Lawn Edger…: Full Comparison

You know the drill. You’ve got a small yard, maybe a little patch of grass out front and a tiny strip in the back. You’re tired of dragging a gas mower out of the shed, messing with fuel, and pulling that cord fifteen times.

So you start looking at cordless options, and pretty soon you’ve narrowed it down to two real contenders: the HEINPRO 14" Cordless Lawn Mower Compatible vs BLACK+DECKER Weed Eater Lawn Edger Cordless. Both are battery-powered, both are aimed at smaller lawns, but they take completely different approaches.

Short answer, the HEINPRO 14" Cordless Lawn Mower Compatible wins for anyone who already owns Milwaukee M18 batteries and wants a dedicated mower that cuts clean. The BLACK+DECKER Weed Eater Lawn Edger Cordless wins for the budget-conscious buyer who needs one kit that does trimming, edging, and basic mowing without buying separate tools. Let’s break down exactly which one fits your shed.

At a glance

These two mowers come from different corners of the cordless world. The HEINPRO is a bare-tool mower that relies on your existing Milwaukee M18 battery system. It’s a proper 14-inch steel-deck mower with a brushless motor, designed for cutting grass, not trimming edges.

The BLACK+DECKER MTC220 is a 3-in-1 combo kit that includes a 12-inch string trimmer, an edger attachment, and a small mower deck, all sharing two 20V batteries. It’s a whole-yard starter pack in one box. If you compare them to something like the Ryobi 40V mower line, the HEINPRO competes on cut quality, while the BLACK+DECKER competes on convenience and low entry cost.

Side-by-side comparison

HEINPRO 14" Cordless Lawn Mower Compatible — strengths & weaknesses

1. HEINPRO 14" Cordless Lawn Mower Compatible

The HEINPRO feels like a real mower, not a toy. It has a 14-inch steel deck, a brushless motor, and it connects directly to Milwaukee M18 batteries. That means if you already own a Milwaukee drill or impact driver, you don’t need to buy new batteries or a charger.

Just pop in your 5.0Ah or 8.0Ah battery and go. The steel deck gives it a solid feel that plastic decks just can’t match, and the brushless motor delivers consistent power even through thicker grass.

Where it shines

• Real steel deck. The 14-inch steel deck is a huge advantage over plastic decks. It holds up better if you hit a rock or a root, and it gives the mower a lower center of gravity. It feels planted, not flimsy.
• Brushless motor efficiency. The brushless motor paired with an M18 battery gives you noticeably more runtime than a brushed motor. Aggregate user reviews report around 25 to 30 minutes of continuous cutting on a 5.0Ah battery, which is enough for a quarter-acre lawn.
• Milwaukee battery ecosystem. If you already own Milwaukee M18 tools, this is the biggest win. No extra charger, no extra batteries cluttering your garage. Just swap and go.
• 5-position height adjustment. The center lever lets you change cutting height from about 1.5 inches to 3.5 inches without bending over each wheel. It’s quick and easy.
• Mulching and rear bagging. The mulching plug works well for fine clippings, and the rear bag collects nicely without clogging in dry grass.
• Compact storage. It folds or stands upright easily. It takes up very little floor space in a shed.

Where it falls short

• Battery not included. This is the biggest barrier. If you don’t already own Milwaukee M18 batteries, you’ll need to buy one separately. That adds upfront cost.
• No trimming or edging. It’s a mower and nothing else. You’ll still need a string trimmer for edges and fence lines.
• No side discharge. The only options are mulch or rear bag. Some people prefer side discharge for very tall grass. This mower doesn’t offer it.
• Single battery bay. You can only run one battery at a time. Some larger mowers let you run two for longer runtime. Here you’re limited to whatever one M18 you have.

BLACK+DECKER Weed Eater Lawn Edger Cordless — strengths & weaknesses

2. BLACK+DECKER Weed Eater Lawn Edger Cordless

The BLACK+DECKER MTC220 is the opposite of the HEINPRO. It comes with everything you need in one box: a 12-inch mower, a string trimmer, an edger attachment, two 20V batteries, and a charger. It’s a complete yard care starter kit for small lawns.

The mower deck is plastic and the motor is brushed, but for a 2,000-square-foot lawn, it gets the job done. Based on editorial analysis of buyer reviews, the trimmer head is the real star of this kit, with good feed and decent runtime.

Where it shines

• Everything included. You get the mower, trimmer, edger, two batteries, and a charger. No surprise purchases. Open the box and you can start trimming and mowing immediately.
• 3-in-1 versatility. The trimmer head detaches to turn into an edger with a guide wheel. That means you handle side edges and sidewalk lines without a separate tool.
• Two batteries for hot swapping. Having two 20V batteries means you can charge one while using the other. Runtime on a single battery for the mower is about 15 minutes, so swapping keeps you moving.
• Lightweight and easy to carry. The whole kit weighs around 30 pounds with everything included. The mower itself is around 20 pounds. Easy to lift into a car trunk or carry up steps.
• Great for first-time cordless buyers. If you have zero existing batteries or tools, this is the simpler path. No ecosystem lock-in.

Where it falls short

• Plastic deck durability. The plastic mower deck is lightweight, but it’s also not as tough as steel. If you hit a large stone or a hidden piece of metal, the plastic can crack or deform. Buyer reviews mention this as a recurring issue.
• Brushed motor performance. The brushed motor is less efficient than brushless. It loses power faster as the battery drains, and it wears out quicker over time. For small lawns this is fine, but it won’t feel as strong in thick grass.
• 12-inch deck is narrow. At 12 inches, you’ll make more passes than with the 14-inch HEINPRO. It’s not a dealbreaker for a 1,500-square-foot lawn, but it adds a few minutes per mow.
• Per-wheel height adjustment. To change cutting height, you have to adjust each wheel separately. It’s slower and less convenient than a central lever.
• Battery life on mower is short. Many verified buyers report 12 to 15 minutes of actual mowing time per battery. That means if your lawn takes 30 minutes, you’re swapping half way through.

Head-to-head

Price-to-performance

The HEINPRO costs more upfront when you factor in the battery, but its brushless motor and steel deck offer better performance per dollar over the long haul. The BLACK+DECKER is cheaper to get into and includes everything, but you’re paying for a brushed motor and plastic build that won’t last as long. For value over three years, the HEINPRO wins.

For immediate affordability, the BLACK+DECKER wins.

Build quality

The HEINPRO uses a stamped steel deck and a brushless motor. The BLACK+DECKER uses a plastic deck and a brushed motor. There’s no contest here in terms of durability.

The HEINPRO can absorb a hit that would crack the BLACK+DECKER’s deck. The steel deck also holds its shape over time, so the blade alignment stays consistent. The BLACK+DECKER is fine for light use, but it won’t survive a rough season on a rocky lawn.

Versatility and coverage

The BLACK+DECKER wins this one hands down. It’s a mower, trimmer, and edger in one box. You can mow the lawn, then swap the head and trim the edges, then swap again and clean up the sidewalk.

The HEINPRO is only a mower. If you already own a trimmer, the HEINPRO is fine. If you’re starting from scratch, the BLACK+DECKER saves you a whole separate tool purchase.

Runtime and battery life

With a Milwaukee M18 5.0Ah battery, the HEINPRO runs for about 25 to 30 minutes of continuous mowing. That’s enough for most small to medium lawns on a single charge. The BLACK+DECKER gets about 12 to 15 minutes per battery, which means you’ll use both batteries for a 25-minute lawn.

The HEINPRO’s brushless motor is simply more efficient. It delivers more cutting torque per watt than the brushed motor in the BLACK+DECKER.

Ease of setup

The BLACK+DECKER is ready to go out of the box. Charge the batteries, attach the handle, and mow. No compatibility check, no battery shopping.

The HEINPRO requires you to own or buy a Milwaukee M18 battery and charger separately. If you don’t have any, that’s an extra step and an extra trip to the store. For absolute simplicity, the BLACK+DECKER is the winner.

Long-term durability

The steel deck and brushless motor on the HEINPRO are built to last several seasons. The brushed motor on the BLACK+DECKER will eventually wear out, and the plastic deck is more prone to cracking. If you plan to keep this mower for five years, the HEINPRO is the safer bet.

The BLACK+DECKER is more of a 2- to 3-year tool for light use.

Which one should you buy?

Pick HEINPRO 14" Cordless Lawn Mower Compatible if you…

Already own Milwaukee M18 batteries. That’s the number one reason to buy this mower. You’re not paying for new batteries, and you get a steel-deck, brushless mower that cuts better and lasts longer.

Also pick this if you have a small but real lawn (2,000 to 5,000 square feet) and you already own a string trimmer for edges. The HEINPRO handles the main cutting job with authority.

Pick BLACK+DECKER Weed Eater Lawn Edger Cordless if you…

Are starting from scratch with zero cordless tools. This kit gives you a mower, trimmer, and edger for one price. It’s ideal for a very small lawn under 2,000 square feet, a townhouse yard, or a rental property where you don’t want to invest heavily.

The batteries and charger are included, so you can start mowing the same day it arrives.

Better alternatives

If you want a middle ground, the Ryobi 13-inch 40V brushless mower offers a steel deck and brushless power without needing a specific battery ecosystem, but it costs more than either of these. The Sun Joe iON+ 14-inch mower is another good cordless option at a similar price to the HEINPRO, with its own included battery and charger. Both are worth a look if you don’t own Milwaukee tools and want a step up from the BLACK+DECKER.

Verdict matrix

Frequently Asked Questions (FAQ)

Is the HEINPRO worth it if I don’t own Milwaukee batteries?

Only if you plan to also buy Milwaukee M18 batteries and use them for other tools later. If you’re just buying a battery for this mower, the total cost gets close to a self-contained mower like the Sun Joe or Ryobi. At that point, you’re better off with a mower that includes its own battery system.

How big of a yard can the BLACK+DECKER MTC220 handle comfortably?

Aggregate user reviews suggest it handles up to about 2,500 square feet before battery swaps become annoying. For a 1,500 to 2,000 square foot lawn, you can finish on one charge of both batteries. For anything larger, you’ll want a mower with longer runtime like the HEINPRO.

Which one has the better string trimmer?

The BLACK+DECKER’s trimmer is decent for light trimming around flower beds and sidewalks. It uses a bump-feed head and runs on the same 20V battery. It’s not as powerful as a dedicated commercial trimmer, but it’s fine for a small yard.

The HEINPRO doesn’t include a trimmer at all, so if you need one, you’ll need to buy separately.

Can I use any Milwaukee M18 battery in the HEINPRO?

Yes. It works with all Milwaukee M18 batteries, including the 3.0Ah, 5.0Ah, 6.0Ah, 8.0Ah, and 12.0Ah high-output versions. A larger battery gives you proportionally longer runtime.

The mower has a single battery slot, so you can’t run two at once.

Which mower is easier to store?

Both are compact. The HEINPRO has a collapsible handle that folds down for vertical or horizontal storage. The BLACK+DECKER mower also folds, and the trimmer head can hang on a wall hook.

They both take up about the same floor space, roughly 2 feet by 2 feet when folded.

Does the BLACK+DECKER kit include extra trimmer line?

It includes a pre-wound spool of line inside the trimmer head. Replacement spools are widely available and inexpensive. Most verified buyers say the included spool lasts about 3 to 4 trimming sessions on a small lawn.

Final verdict

The HEINPRO 14" Cordless Lawn Mower Compatible earns a 4.5 out of 5 stars for its solid steel deck, efficient brushless motor, and seamless integration with Milwaukee M18 batteries. It’s the right choice for anyone who already has Milwaukee tools and wants a proper mower that will last. The BLACK+DECKER Weed Eater Lawn Edger Cordless gets 4 out of 5 stars.

It’s not as durable or powerful, but it offers incredible value for the price by including three tools and two batteries in one box. If you’re starting fresh with no tools and a small lawn, it’s the smarter buy right now.

Affiliate disclosure: This post contains affiliate links. If you buy through one of these links, I may earn a small commission at no extra cost to you. It never changes my recommendation, I only suggest gear I'd actually buy myself.