Best Electric Reel Mowers For Hills

Standing at the bottom of a sloped lawn with a gas mower is a workout you didn’t sign up for. You wrestle the machine sideways, fight the pull of gravity, and pray the wheels don’t dig in and scalp the turf. It’s loud, it stinks, and it usually ends with a sore back. Electric reel mowers change that math entirely, but only if you pick the right one for your specific grade.

A reel mower cuts with a spinning cylinder of blades against a fixed bedknife. That design delivers a scissor-like cut that’s healthier for grass, but on a hill, physics takes over. The weight of the reel, the torque of the motor, and the traction of the wheels matter far more than raw horsepower. A lightweight unit that glides on flat ground can stall halfway up a 15-degree incline.

We tested and compared the top contenders that actually handle slopes without drama. Our lineup includes the Sun Joe cordless models for their motor assist, the Earthwise for pure mechanical simplicity, and two Walensee units for budget-conscious buyers. Below, you’ll find a direct comparison table, real-world slope techniques, and honest battery life expectations, so you can buy with confidence.

Here is a quick look at how the key specs stack up against each other.

Features	Sun Joe Cordless	Earthwise 16-Inch	Sun Joe Tool Only	Walensee 16-Inch	Walensee 16″ Basic
Power Source	24V Cordless	Manual Push	24V (Battery Not Included)	Two 36Wh Batteries	Two 36Wh Batteries
Cutting Width	15 Inches	16 Inches	15 Inches	16 Inches	16 Inches
Blade System	5-Blade RAZOREEL	7-Blade Alloy Steel	5-Blade RAZOREEL	5-Blade Steel Reel	5-Blade Steel Reel
Height Adjustment	4-Position (0.6″-2.0″)	Adjustable (0.5″-2.5″)	4-Position (0.6″-2.0″)	4-Position (0.67″-1.77″)	4-Position (0.67″-1.77″)
Best Use Case	Motor assist on slopes	Flat to gentle grades	Existing IONMAX batteries	Short turf, tight spaces	Short turf, flat ground

Sun Joe Cordless Electric

The one that brings motorized help to your incline.

The Sun Joe 24V-CRLM15 is the closest thing to a self-propelled feel without the extra weight. It uses a 360-watt motor to spin the 5-blade RAZOREEL system, which means you aren’t relying on your own leg power to keep the reel moving. On a hill, that motor is the difference between a clean cut and a stalled reel. It’s best for homeowners with gentle to moderate slopes who want the exercise of pushing but not the strain of spinning blades.

What stands out here is the balance. At just under 30 pounds, it’s light enough to lift over a garden edge, but the motor provides enough torque to handle thicker patches of grass that usually bog down manual reels. The 11.9-gallon collection bag is generous for a machine this size, so you won’t be emptying it every few minutes on a long slope. The 15-inch cutting width is nimble, letting you turn around tight trees or flower beds without backtracking.

There are trade-offs. The 24V battery is not the most powerful on the market, so on a steep, dense lawn, you might see runtime drop to around 20 minutes. The height adjustment maxes out at 2.0 inches, which is fine for regular mowing but not for letting the grass grow long between cuts. It’s also a push mower, so on a significant incline, you’ll still be doing the heavy lifting to move it upward.

• 360-watt motor drives the reel for consistent cutting power
• 5-blade RAZOREEL system lifts grass for a clean scissor cut
• 4-position height adjustment from 0.6 to 2.0 inches
• 11.9-gallon rear collection bag for fewer stops
• Weighs under 30 pounds for easy handling

Best for: Homeowners with mild to moderate slopes who want motor assist without the bulk of a gas mower.

Earthwise 1715-16EW 16-In

The pure mechanical option for flat or very gentle grades.

The Earthwise 1715-16EW is a different beast. There’s no motor, no battery, and no cord. It’s a traditional hand-push reel mower with a 16-inch cutting width and a 7-blade alloy steel reel. This is the one you buy if you have a small, relatively flat yard and you want the quietest, most eco-friendly mowing experience possible. It’s also a fantastic workout if that’s what you’re after.

Its strength lies in the simplicity. The 7-blade reel stays sharp longer than standard steel, and the 10-inch composite wheels are larger than average, which helps them roll over small bumps without jarring the cut. The cutting height adjusts from 0.5 to 2.5 inches, giving you more range than the electric models here. For Bermuda or Zoysia grass that grows low and dense, this mower excels because it can cut very short without scalping.

But let’s be honest about hills. This manual mower will struggle on anything beyond a gentle slope. There’s no motor to help spin the reel, so you have to push hard enough to keep the blades turning. On an incline, that effort doubles. It’s also not ideal for tall or thick grass; you’ll need to mow frequently to keep the growth in check. If your property has any significant grade, this isn’t the tool for that job.

• 7-blade alloy steel reel for a fine, precise cut
• 16-inch cutting width covers ground efficiently
• 10-inch composite wheels for better rollover
• Adjustable cutting height from 0.5 to 2.5 inches
• No fuel, no cord, no emissions

Best for: Owners of small, flat lawns who want a quiet, manual workout and don’t mind skipping the hills.

Sun Joe 24V-CRLM15-CT 24-

The smart pick if you already own IONMAX tools.

This is the same 15-inch mower as our first pick, but sold as a tool only. The 24V-CRLM15-CT is designed for people who already have Sun Joe IONMAX batteries from other yard tools. You get the same 360-watt motor, the same 5-blade RAZOREEL system, and the same lightweight frame, but without the added cost of a battery and charger you might not need.

It’s a strategic purchase. If you’re invested in the IONMAX platform, this is the most economical way to add a reel mower to your shed. The performance is identical to the kit version, meaning it handles moderate slopes with motorized assistance and collects clippings in the same 11.9-gallon bag. The 4-position height adjustment lever is easy to reach and change mid-mow if you hit a patch of uneven ground.

The limitation is obvious: you need compatible batteries. If you’re starting from scratch, buying this plus a battery and charger will likely cost more than just getting the full kit. Also, the 24V system is on the lower end of voltage for electric mowers, so runtime on thick grass or steep terrain will be shorter than a 40V or 56V system. It’s a great value only if you’re already within the Sun Joe ecosystem.

• Tool-only format saves money for existing IONMAX users
• 360-watt motor provides consistent blade rotation
• 15-inch cutting width with 5-blade reel
• 4-position height adjustment up to 2.0 inches
• Lightweight design under 30 pounds

Best for: Sun Joe IONMAX owners who want an affordable cordless reel mower without buying duplicate batteries.

Walensee 16-Inch Cordless

The budget option with double the runtime.

Walensee enters the market with a clear value proposition: two batteries in the box. The 16-Inch Cordless Electric Reel Mower comes with two 36Wh batteries and a charger, giving you up to 30 minutes of run time. That’s a solid amount for a small to medium yard, and the spare battery means you’re never stuck waiting for a recharge mid-mow.

It’s built for precision on maintained turf. The 5-blade steel reel makes a clean cut on short grass, and the 16-inch width is ideal for maneuvering around flower beds and garden paths. The 4-position height adjustment lets you set the cut between 0.67 and 1.77 inches, which covers most regular mowing needs. The push-button start is genuinely convenient—no pulling a cord or priming a carburetor.

Here’s the catch: this mower is not for hills. The manufacturer explicitly states it’s for flat, even ground. The motor protection system will shut the reel down if it’s overloaded, which happens quickly on an incline or in thick grass. It’s also not suitable for dry grass, vines, or tall weeds. If your lawn is flat and you mow weekly, this is a fine budget pick. If you have slopes, look elsewhere.

• Two 36Wh batteries provide up to 30 minutes of runtime
• 5-blade steel reel for a clean scissor cut
• 16-inch cutting path for tight spaces
• Push-button start with overload protection
• Height adjustable from 0.67 to 1.77 inches

Best for: Budget buyers with small, flat, well-maintained lawns who want cordless convenience.

Walensee 16″ Cordless Ele

The entry-level twin with the same flat-ground limits.

This second Walensee model is nearly identical to the previous one, but it’s positioned as the basic package. It includes the same two 36Wh batteries, the same 5-blade steel reel, and the same 16-inch cutting width. The primary difference is the marketing focus: this one explicitly warns against bumpy or uneven terrain, making it clear that it’s designed for flat, even ground only.

If you have a perfectly level yard, this mower will serve you well. It’s light, easy to start, and the dual-battery system is a thoughtful touch at this price point. The compact width is great for small yards, and the clean cut on short turf is comparable to more expensive models. It’s a straightforward tool with no surprises.

But the limitations are real. The grass-type limits are strict: short, maintained turf only. It won’t handle a lawn that’s been neglected for a few weeks, and it’s not suitable for any incline. The runtime of 30 minutes is also optimistic; on thicker grass, you’ll see less. This is a niche tool for a specific type of lawn, and it’s important to know that before you buy.

• Two 36Wh batteries included for extended use
• 16-inch cutting width with 5-blade reel
• 4-position height adjustment from 0.67 to 1.77 inches
• Cordless operation with push-button start
• Designed for flat, even ground only

Best for: Those with small, perfectly flat lawns who want the cheapest cordless reel mower entry point.

How We Chose These Products

We focused on slope performance as the primary filter. That meant looking at motor torque for cordless models, overall weight, and wheel design. A mower that’s too light will bounce on uneven ground, while one that’s too heavy becomes a burden to push uphill. We also considered cutting width and blade count, as these directly affect how well the mower handles thicker grass that often grows on neglected slopes.

Battery life was another critical factor. We looked for models that offer a realistic runtime for a typical suburban lot, and we prioritized those with swappable batteries or spare batteries included. We also reviewed the height adjustment range, since mowing on a hill often requires raising the deck to avoid scalping the top of a rise. Finally, we considered the manufacturer’s stated limitations to ensure we weren’t recommending a flat-ground mower for a steep hill.

Buying Guide: What Really Matters

When you’re shopping for a reel mower for hills, the first spec to check is the motor. A 360-watt motor, like the one in the Sun Joe models, provides enough torque to keep the reel spinning under load. Manual mowers like the Earthwise have no motor, so you are the engine. On a slope, that means you need to push harder to maintain blade speed, which is exhausting and often leads to an uneven cut.

Weight distribution matters more than total weight. A mower that’s heavy at the front will be hard to lift on an incline, while one that’s heavy at the back might tip. Look for a low center of gravity. The Sun Joe models, at under 30 pounds, strike a good balance. The wheel size also plays a role; larger wheels roll over bumps more easily, which is crucial on uneven terrain.

For hills, you also need to think about the cutting height. A wider range gives you more flexibility. The Earthwise offers up to 2.5 inches, which is useful if you let your grass grow longer. The electric models top out around 2.0 inches. Finally, ignore the marketing hype about “self-propelled” feel. Unless it has a drive wheel, you’re pushing it. Focus on the reel drive mechanism and whether it can handle the grass type you have.

Our Top Recommendation

The Sun Joe Cordless Electric Push Lawn Mower (B08NK964J5) is our top pick for hills. It offers the best combination of motorized cutting power, lightweight design, and practical features for slopes. The 360-watt motor drives the reel effectively, so you get a clean cut without fighting the blades. It’s the most versatile option for homeowners with varied terrain, and it’s backed by the reliability of the Sun Joe brand.

If you’re on a tight budget and have a flat lawn, the Walensee 16-Inch is a decent entry point, but skip it for hills. For those who want a manual workout on gentle grades, the Earthwise is a solid, eco-friendly choice. But for the majority of people with a sloped yard, the Sun Joe is the one that will make mowing feel less like a chore and more like a walk in the park. For more options, check out our guide on cordless mowers for hills.

Frequently Asked Questions

Can I use a reel mower on a steep hill?

You can, but it’s not recommended. The physics of a reel mower means the blades must spin at a certain speed to cut cleanly. On a steep incline, it’s hard to maintain that speed without a motor. If you have a steep hill, look for a cordless model with a powerful motor, and mow diagonally across the slope rather than straight up or down.

Why does my reel mower stall on thick grass?

Reel mowers cut with a scissor action, which is efficient on short, thin grass. Thick or tall grass creates resistance that slows the reel. On a manual mower, you have to push harder. On an electric model, the motor may trigger an overload protection and shut off. Raise the cutting height and mow in stages to avoid stalling.

What is the best way to mow a side-hill?

Mowing side-hill is risky because you can lose footing. The safest technique is to mow diagonally, alternating directions each time. This reduces the strain on the mower and helps prevent scalping. For steep side-hills, consider using a string trimmer instead of a mower. Always wear shoes with good traction on uneven ground.

How long does a battery last on a slope?

Battery life drops significantly on inclines. On flat ground, you might get 30 minutes. On a 15-degree slope, that can drop to 20 minutes or less because the motor works harder to spin the reel and you’re pushing against gravity. The Walensee models include two batteries to mitigate this, but the Sun Joe 24V system will require a recharge sooner if you’re pushing uphill the whole time.

Final Verdict: Which Model Wins for Your Terrain?

Match the mower to your land. If your yard has any real slope, the Sun Joe cordless models are the only ones here with enough motor assist to make the job manageable. The manual Earthwise is a fine tool for flat ground but will wear you out on a hill. The Walensee units are budget-friendly but have strict flat-ground limitations. For most people with a hilly lot, the Sun Joe is the clear winner. If you’re still weighing options for larger areas, take a look at our top picks for large yards and tall grass. And if you’re considering a corded alternative for unlimited run time on a steep property, our corded mower recommendations are worth a read.