Battery technology has transformed everything from phones to power tools—and now it’s reshaping the way we cut grass. A modern self propelled lawn mower powered by high-capacity lithium batteries brings the push-button convenience people love about cordless tools to one of the most routine jobs at home.
In this guide, we unpack how today’s battery powered lawn mower models deliver real-world performance, easier operation, and cleaner, quieter mowing—now comparing four deck sizes from Wild Badger’s 40V lineup: 14-, 16-, 18-, and 21-inch.
Performance that actually rivals gas
Brushless motors are a big reason electric lawn mower performance has caught up. Compared with brushed designs, brushless motors waste less energy as heat, deliver torque more efficiently, and typically last longer. Wild Badger’s 21-inch self-propelled mower runs a 3200-RPM brushless motor and ships with two 40V 4Ah batteries. That pairing is good for up to 88 minutes of continuous mowing—enough for larger blocks, sloped sections, and thick spring growth—without the fumes or pull-cord drama of petrol machines. It also supports 4-in-1 cutting (bagging, mulching, side discharge, rear discharge), so you can tune the finish for speed, lawn health, or that bowling-green look.
Not everyone needs a wide deck. If your garden has courtyards, tight paths, or lots of beds and trees, compact cordless decks are often faster in practice. Wild Badger’s 16-inch model spins up to 3400 RPM and is rated for about 30 minutes per charge, while the super-maneuverable 14-inch model reaches 3800 RPM with a similar ~30-minute session. Both are built around brushless motors for efficient power delivery and consistent cut quality.
Self-propel = less strain, more control
The main reason buyers upgrade is simple: pushing a mower for 30–60 minutes is tiring, especially on uneven ground. A self propelled lawn mower removes that strain by matching your walking pace. Wild Badger’s 21-inch unit adds a three-speed handle and height-adjustable controls so different users can dial in a comfortable, steady rhythm. Fewer stalls and less stop-start fatigue translate into a more even cut across the whole yard.
The 14-/16-/18-inch push models don’t self-propel, but their low weight and compact decks keep handling light. All three use quick, tool-free height adjusters (five positions), fast-fold handles for vertical storage, and large bags to cut down trips to the green bin.
Quieter, cleaner, and easier to live with
Switching from petrol to a battery powered lawn mower removes a surprising amount of hassle. There’s no fuel to store, no oil to change, and no exhaust smell on your clothes after a quick tidy-up. Noise drops significantly too—great for early-morning or after-work cuts when you don’t want to wake the street. Brushless motors help here as well, lowering mechanical wear and improving energy efficiency. These brushless designs are standard across the 14-, 16-, 18-, and 21-inch models.
Charging logistics have also improved. With the 21-inch unit’s dual 40V 4Ah kit and extended runtime, many owners can mow an entire property in one go. The 14-inch battery is listed at ≈30 minutes to full charge; the 16- and 18-inch packs cite ≈60 minutes.
Practical tips to get the most from your electric mower
- Right-size your runtime. If you regularly mow for more than 45–60 minutes, pick the 21" dual-battery setup or keep a spare battery on charge for 16"/18". The 14" excels at quick weekly cuts.
- Match cut height to season. Raise the deck during hot, dry spells to reduce stress and conserve moisture; lower it slightly in cool, lush growth. The 21" unit’s seven settings are especially versatile; the others offer five.
- Use the right discharge mode. Mulch when grass is dry and you want to return nutrients; bag for a manicured look; side/rear discharge when speed matters. (All four modes are available on the 21".)
- Store smart. Fold the handle after each use and keep batteries in a cool, dry spot. The quick-fold designs on 14"/16"/18" genuinely save space.
The bottom line
If you’ve been waiting for cordless gear to “grow up,” this is the moment. A modern self propelled lawn mower that’s battery powered delivers the performance homeowners expect—without the noise, fumes, or maintenance that made weekend mowing a chore. Whether you need a long-running 21-inch self-propelled workhorse, an ultra-nimble 14–16-inch electric lawn mower, or a more capacious 18-inch for fewer passes, today’s brushless 40V systems make lawn care cleaner, quicker, and a lot more enjoyable. And with quick-fold storage, multi-position height control, fast charging, and multi-year warranties across the lineup, it’s never been easier to make the switch to electric.