WEN 20V Max 2-in-1 19-Inch Cordless Brushless Lawn Mower and Mulcher with Two 5Ah Batteries and Dual Port Charger (20839) Review

Overview

The WEN 20V Max 2-in-1 19-Inch Cordless Brushless Lawn Mower (model 20839) is a compact, battery-powered mower designed for small to medium lawns, typically under a quarter acre. It’s built for homeowners who want a lightweight, low-maintenance alternative to gas mowers, without the hassle of cords or fuel. With two 5Ah batteries and a dual-port charger included, this mower aims to deliver enough runtime for most suburban yards while keeping the operation whisper-quiet and fume-free.

Who Should Buy This

• Small-lot homeowners (under 1/4 acre): If your lawn is a postage stamp—think tiny front yard and a modest back—this 19-inch deck is the perfect fit. It’s nimble enough to weave around flower beds and tight corners, and the batteries will likely finish the job on a single charge.
• First-time cordless converts: Tired of pulling starter cords, storing gas cans, or dealing with oil changes? This mower is an easy entry point into battery-powered lawn care, especially if you already own WEN 20V tools (batteries are cross-compatible).
• Noise-sensitive users: If you have neighbors close by, early-morning yard work habits, or just hate the roar of a gas engine, this mower’s brushless motor is noticeably quieter—think loud conversation, not a chainsaw.
• Budget-conscious buyers: At $272 with two batteries and a charger, this is one of the most affordable cordless mower packages on the market. It undercuts many competitors by $100 or more, making it a solid value for price-sensitive shoppers.

Key Features Breakdown

• 20V Max brushless motor: Brushless motors are more efficient and longer-lasting than brushed ones. For you, that means more runtime per charge, less heat buildup, and a motor that won’t wear out quickly. It’s not as powerful as a 40V or 60V system, but for thin to moderate grass, it’s plenty.
• 19-inch cutting deck: This is a narrow deck compared to standard 21-inch mowers. The upside? You can maneuver through narrow gates and around obstacles with ease. The downside? You’ll make a few more passes on open lawn. It’s a trade-off that works best for smaller, complex yards.
• 2-in-1 function (mulch and side discharge): You can choose to mulch clippings into fine particles that feed your lawn, or attach the included side-discharge chute to blow clippings out. There’s no bagging option included, so if you need to collect leaves or clippings, you’ll need to buy a bag separately (WEN sells one).
• Two 5Ah batteries and dual-port charger: This is a major value-add. Each 5Ah battery offers decent runtime—expect about 20-30 minutes per battery depending on grass thickness. The dual-port charger lets you juice both at once, so you can rotate batteries and keep mowing without a long wait. Total runtime with both batteries: roughly 40-60 minutes.
• Single-lever height adjustment: A single lever lets you change cutting height across 6 positions (1.5 to 3.75 inches). It’s not as fancy as individual wheel adjustments, but it’s fast and foolproof—just one click and you’re done.
• Foldable handle and compact storage: The handle collapses without tools, making the mower easy to stand upright in a garage corner or shed. If storage space is tight, this is a godsend.

Pros

1. Exceptional value for a complete kit: Two batteries and a dual charger at this price point is rare. You’re not nickel-and-dimed for extras.
2. Lightweight and easy to push: At roughly 35 pounds, this mower is noticeably lighter than most gas models. Even a slight incline feels manageable.
3. Quiet operation: You can mow at 7 AM without waking the whole block. The brushless motor hums rather than roars.
4. No gas, no cords, no fuss: Instant start with a safety key and a button. No priming, no choking, no extension cord tangles.
5. Nimble for tight spaces: The 19-inch deck and compact frame make it easy to trim around gardens, trees, and fences. It’s like a precision tool for small yards.
6. Brushless motor reliability: Fewer moving parts mean less maintenance and a longer lifespan than brushed motors. WEN backs it with a 2-year warranty.

Cons

1. Underpowered for thick or tall grass: If your lawn is overgrown, damp, or dense, the mower will bog down easily. You’ll need to take lighter passes or raise the deck. It’s not a brute-force machine.
2. No bagging option included: The mower mulches and side-discharges out of the box, but there’s no bag. If you prefer to collect clippings, that’s an extra $30-40 purchase.
3. Limited runtime on a single battery: Each 5Ah battery gives only 20-30 minutes of real-world mowing. For a 1/4-acre lawn, you’ll likely need both batteries to finish, and you’ll have to swap mid-mow.
4. Not ideal for uneven terrain: The wheels are small and plastic. On bumpy ground, the mower can bounce, leaving uneven cuts. It’s best on relatively flat, well-maintained lawns.

Bottom Line

The WEN 20V Max 2-in-1 is a fantastic entry-level cordless mower for homeowners with small, tidy lawns who want to ditch gas without breaking the bank. The included two-battery kit is a steal at this price, and the lightweight, quiet operation makes mowing feel like less of a chore. However, it’s not a powerhouse—if you have thick grass, a large yard, or rough terrain, you’ll quickly hit its limits. For the right buyer (small, flat lawns under 1/4 acre), this is a solid, budget-friendly choice. I’d recommend it over similarly priced corded models any day—just be ready to buy a bag if you want one.

Frequently Asked Questions

Q: Can I use this mower on a lawn larger than 1/4 acre?
A: Technically yes, but you’ll need to swap batteries mid-mow. With two 5Ah batteries, you get roughly 40-60 minutes of runtime. If your lawn takes longer, you’ll either need to buy extra batteries or recharge the original ones—which takes about an hour. For lawns over 1/3 acre, consider a 40V or 60V model.

Q: Does this mower come with a grass catcher bag?
A: No, it only includes the mulching plug and side-discharge chute. WEN sells a compatible