SKIL PWR CORE 40 Brushless 40V 20-Inch Self-Propelled Mower Kit, Includes 6.0Ah Battery and Auto PWR JUMP Charger - SM4910C-11 Review

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★★œ 4.5/5 (132 reviews)
$349.00
Brand: SKIL
SKIL PWR CORE 40 Brushless 40V 20-Inch Self-Propelled Mower Kit, Includes 6.0Ah Battery and Auto PWR JUMP Charger - SM4910C-11
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Overview

The SKIL PWR CORE 40 Brushless 40V 20-Inch Self-Propelled Mower (SM4910C-11) is a cordless electric mower that strikes a smart balance between power and affordability. Designed for homeowners with small to medium lawns—think a quarter acre or less—it replaces the hassle of gas with a robust 40V lithium-ion system and a 6.0Ah battery that handles most yards on a single charge. If you’re tired of pull cords, stale fuel, and engine maintenance, this mower is your ticket to a cleaner, quieter cut.

Who Should Buy This

  1. Homeowners with 1/4-acre or smaller lawns – The 20-inch deck and 6.0Ah battery deliver enough runtime (about 45 minutes on a mix of grass types) to finish a typical suburban lot without needing a second battery. If your yard is bigger, you’ll want to plan a mid-job charge or grab an extra pack.

  2. First-time electric mower buyers – SKIL keeps things simple: one battery, one charger, and a self-propelled drive that’s easy to engage. No mixing oil, no priming, no carburetor headaches. Just press a button and go.

  3. Noise-sensitive neighborhoods – At roughly 80 decibels, this mower is whisper-quiet compared to gas models. You can mow early Saturday morning without waking the neighbors—or your own family.

  4. Budget-conscious shoppers who still want features – At $349, you get a brushless motor, self-propulsion, and a battery/charger kit that would cost $200+ alone. It’s a strong value for someone who wants modern convenience without breaking $400.

Key Features Breakdown

  • 40V Brushless Motor – Brushless motors are more efficient and last longer than brushed ones. This one delivers enough torque to handle thick grass and light weeds without bogging down. You’ll notice the difference when the grass is damp or slightly overgrown.

  • 20-Inch Steel Deck – A 20-inch cut is a sweet spot for maneuverability and speed. It’s wide enough to finish a 5,000-square-foot lawn in about 30 minutes, yet narrow enough to fit through standard garden gates. The steel deck adds durability over plastic alternatives.

  • Self-Propelled Drive – The rear-wheel drive system is variable-speed, controlled by a lever on the handle. It’s not the smoothest in its class—some users report a slight lag—but it takes the effort out of pushing on slopes or thick turf. You can disengage it easily for manual mode.

  • 6.0Ah PWR CORE 40 Battery – This is SKIL’s high-capacity pack. It uses lithium-ion cells with a “PWR CORE” design that keeps them cool during discharge, extending life. Expect 40–50 minutes of runtime in normal conditions, or about 25–30 minutes if you’re fighting tall, wet grass.

  • Auto PWR JUMP Charger – This charger is a standout: it can bring a fully depleted 6.0Ah battery to 25% in about 15 minutes and full charge in roughly 60 minutes. That’s significantly faster than most competitors’ chargers, which often take 90–120 minutes.

  • Single-Lever Height Adjustment – A lever near the rear wheels lets you raise or lower the deck across 7 positions (1.5 to 4 inches). It’s tool-free and quick, unlike some mowers that require adjusting each wheel individually.

  • 3-in-1 Functionality – You can bag, mulch, or side-discharge clippings. The mulching plug is included, and the bag has a decent 1.5-bushel capacity. For mulching, the blade design does a good job chopping clippings fine enough to disappear into the lawn.

Pros

  • Excellent battery and charger combo – The 6.0Ah capacity is generous for this price, and the fast charger means you’re rarely stuck waiting. A 15-minute quick charge can finish a small front yard.

  • Quiet operation – At conversation-level volume, you can mow without earplugs. Great for early morning or late evening sessions.

  • Lightweight and easy to maneuver – At about 50 pounds with the battery, it’s lighter than most gas mowers and many electric competitors. Pushing it manually (without self-propel) is doable on flat ground.

  • Brushless motor reliability – No brushes to wear out, and SKIL backs it with a 3-year warranty. This motor should outlast the battery by years.

  • Tool-free height adjustment – Changing cut height takes seconds. No crouching to turn individual wheel knobs.

  • Value for the money – At $349, you’re getting a complete kit with a high-capacity battery that alone costs $150–$200. Comparable mowers from Greenworks or Ryobi often cost more for similar specs.

Cons

  • Self-propulsion can be inconsistent – The variable-speed drive isn’t as responsive as premium systems (e.g., Toro’s Personal Pace). Some users report a jerky start or sluggish response on hills. It works, but it’s not buttery smooth.

  • 20-inch deck is small for larger lawns – If your yard is over 1/3 acre, you’ll wish for a 21- or 22-inch cut. The smaller deck means more passes and longer mowing time.

  • Bag capacity is modest – The 1.5-bushel bag fills quickly if you’re bagging thick or wet grass. You’ll empty it frequently, which slows you down.

  • No single-point folding handle – The handle folds for storage, but it requires removing a knob and doesn’t lock into place as securely as some competitors. It’s functional, not elegant.

Bottom Line

The SKIL PWR CORE 40 is a smart, budget-friendly choice for homeowners with small to medium lawns who want to ditch gas without sacrificing performance. The brushless motor, fast charger, and generous 6.0Ah battery deliver solid runtime and cutting power for the price. It’s not perfect—the self-propulsion could be smoother, and the bag is on the small side—but for $349, you’re getting a reliable, quiet, and low-maintenance mower that will handle weekly cuts with ease. I recommend it confidently for anyone with a quarter-acre or less who values convenience and value over premium frills.

Frequently Asked Questions

Q: How long does the battery last on a full charge?
A: In normal conditions (dry, moderate-height grass), expect 40–50 minutes of runtime with the self-propelled drive engaged. If you’re mulching thick or wet grass, that drops to 25–35 minutes. The fast charger can refill the battery in about 60 minutes, so you can finish a larger lawn with a short

How It Compares

Quick Verdict

The SKIL SM4910C-11 wins overall for most buyers due to its superior self-propelled drive, larger cutting deck, and included high-capacity battery, making it a better value for medium to large lawns despite the higher price.

Side-by-Side Comparison

Feature SKIL PWR CORE 40 (Mower A) Greenworks 40V 16" (Mower B)
Price $349.00 $249.99
Power Source 40V battery (6.0Ah included) 40V battery (4.0Ah included)
Cutting Width 20 inches 16 inches
Self-Propelled Yes No (push mower)
Best Yard Size Up to 1/2 acre Up to 1/3 acre
Warranty 5 years (mower), 2 years (battery) 4 years (mower), 2 years (battery)

Where SKIL Wins

  1. Self-Propelled Drive System: The SKIL mower includes a variable-speed self-propelled system, allowing you to adjust ground speed with a lever. This is a game-changer for lawns over 1/4 acre, on slopes, or for anyone who wants to reduce fatigue. The Greenworks is a push-only model, which becomes tiring on larger or uneven terrain.
  2. Larger Cutting Deck (20" vs 16"): The 20-inch deck cuts 25% more width per pass than the Greenworks’ 16-inch deck. This means fewer laps, faster mowing times, and better handling of tall or thick grass. For a 1/2-acre lawn, the SKIL can save 15-20 minutes per mow.
  3. Higher Capacity Battery (6.0Ah vs 4.0Ah): The SKIL’s 6.0Ah battery provides roughly 50% more runtime than the Greenworks’ 4.0Ah pack. In real-world conditions, expect 45-60 minutes of mowing with the SKIL versus 25-40 minutes with the Greenworks. The included Auto PWR JUMP charger also recharges the battery in about 30 minutes, compared to the Greenworks’ standard 60-minute charge.

Where Greenworks Wins

  1. Lower Price ($249.99 vs $349.00): The Greenworks is $100 cheaper upfront, making it an attractive option for budget-conscious buyers or those with small, flat lawns who don’t need self-propulsion. The savings can be used for additional tools in Greenworks’ 40V ecosystem (75+ compatible tools).
  2. Lighter Weight and Maneuverability: At roughly 45 lbs (vs the SKIL’s ~55 lbs), the Greenworks is easier to lift, store, and push on flat ground. For very small lawns (under 1/4 acre) or users with limited strength, the lighter weight reduces strain.
  3. Proven Reliability with Over 11,000 Reviews: The Greenworks has a massive review count (11,946 vs 132), indicating long-term reliability and widespread user satisfaction. While the SKIL is newer, the Greenworks has a well-established track record for consistent performance and parts availability.

Which Should You Buy?

  • Buy Mower A (SKIL) if: You have a medium to large lawn (1/4 to 1/2 acre), hills, or uneven terrain and want to mow faster with less effort. The self-propelled drive and larger deck make it worth the extra $100 for anyone mowing more than 3,000 square feet.
  • Buy Mower B (Greenworks) if: Your lawn is small (under 1/3 acre), flat, and you’re on a tight budget. The push-only design is fine for quick weekly trims, and the lower price plus proven reliability make it a safe choice for minimal maintenance.
  • Buy Mower A (SKIL) if: You plan to mow multiple properties or want maximum runtime without swapping batteries. The 6.0Ah battery and fast charger give you nearly one hour of continuous mowing, while the Greenworks may require a second battery for larger jobs.

Quick Verdict

The SKIL PWR CORE 40 wins overall for most buyers due to its superior self-propelled system, larger 20-inch cutting deck, and higher voltage battery platform—all for just $19 more than the WORX.

Side-by-Side Comparison

Specification SKIL PWR CORE 40 (SM4910C-11) WORX WG743
Price $349.00 $329.99
Power Source 40V brushless 20V brushless (2 batteries)
Cutting Width 20 inches 17 inches
Self-Propelled Yes No (push only)
Best Yard Size Up to 1/3 acre Up to 1/4 acre
Warranty 5-year limited 3-year limited

Where SKIL Wins

  1. Self-Propelled Drive System – The SKIL is self-propelled, meaning it moves forward under its own power. This is a game-changer for medium to large yards, slopes, or anyone who doesn’t want to break a sweat pushing a mower. The WORX is a push-only model, which becomes tiring on anything beyond a flat, small lawn.

  2. Larger Cutting Deck (20-inch vs. 17-inch) – The SKIL’s 20-inch deck cuts a wider swath, reducing mowing time by roughly 15% compared to the WORX’s 17-inch deck. For a 1/4-acre yard, this can save 10–15 minutes per mow.

  3. Higher Voltage and Single Battery System – The 40V battery delivers more sustained power for thicker grass and longer runtime. SKIL’s PWR CORE 40 platform uses a single 6.0Ah battery, which is easier to manage than WORX’s two smaller 20V batteries that must be swapped mid-mow. The SKIL also includes an Auto PWR JUMP charger that charges the battery in about 60 minutes.

Where WORX Wins

  1. Lighter Weight and Compact Footprint – At roughly 35 lbs (vs. ~50 lbs for the SKIL), the WORX is significantly easier to lift, store, and maneuver in tight spaces. It stands upright for vertical storage, saving garage or shed floor space.

  2. Proven Reliability with Thousands of Reviews – With 7,073 ratings, the WORX has a massive user base and a track record of durability. The SKIL has only 132 reviews, so long-term reliability is less proven.

  3. Lower Price and Included Second Battery – At $329.99, the WORX is $19 cheaper and comes with two 20V 4.0Ah batteries. While each battery has less capacity than the SKIL’s single 6.0Ah, having a spare means you can swap and keep mowing without waiting for a recharge.

Which Should You Buy?

Buy Mower A (SKIL PWR CORE 40) if: You have a medium yard (1/4 to 1/3 acre) with slopes, uneven terrain, or you simply want to minimize physical effort. The self-propelled drive, wider deck, and higher voltage battery make mowing faster and easier. It’s the better choice for anyone who mows weekly and values time savings.

Buy Mower B (WORX WG743) if: You have a small, flat yard (under 1/4 acre), limited storage space, or a tight budget. Its lightweight design and compact storage make it ideal for townhouses, small city lots, or anyone who needs to carry the mower up stairs or lift it into a shed. The proven reliability from thousands of reviews also gives peace of mind.

Buy neither if: Your yard exceeds 1/3 acre. Both mowers will struggle with runtime and cutting efficiency on larger lawns. Look for a model with a 21-inch deck and a larger battery (7.5Ah or more) or consider a gas mower.

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Last updated: June 2026