Quick verdict
A 21-inch brushless self-propelled mower with a variable-speed drive, seven heights from 1.18 to 3.55 inches, a 4-in-1 deck that adds rear discharge to the usual three modes, and two 40V 4.0 Ah packs the maker rates at up to 88 minutes combined. It suits a medium-to-large lawn with gentle slopes and open runs. The caveat is a modest brand with a small battery platform and no stated weight or bag size.
Strengths
- Two 40V 4.0 Ah packs rated at up to 88 minutes total
- Variable-speed self-propelled drive
- 4-in-1 deck: bag, mulch, side discharge and rear discharge
- Seven heights from 1.18 to 3.55 inches
- 21-inch deck on a 3,200 rpm brushless motor
Weaknesses
- Smaller brand with a limited 40V tool range
- Weight, deck material and bag capacity are not stated
- Top height of 3.55 inches is a touch low for some warm-season lawns
- Drive speed range is not given in figures
The overall YardToolLab Score is out of 100. Section scores are out of 10.
Who this mower is for
Most 40V kits are built for small lots. Wild Badger Power’s 21-inch self-propelled mower is pitched at the next size up: the medium-to-large suburban lawn with open runs and gentle slopes where a full-width deck, a drive and two packs make the difference between one session and two. It adds a fourth discharge mode that few rivals offer and quotes a combined runtime figure, which most budget brands avoid doing.
This review is based on the maker’s published specifications and on recurring owner feedback. We have not run this product ourselves.
What you get
The kit includes the mower, two 40V 4.0 Ah lithium packs and a fast charger. The deck is 21 inches, the motor is brushless and spins at 3,200 rpm, and the drive is self-propelled with a variable speed that the listing says matches your walking pace, without giving a range in mph. Cutting height moves through seven positions from 1.18 to 3.55 inches. The deck has four clipping modes: rear bagging, mulching, side discharge and rear discharge. Wild Badger Power rates the two packs at up to 88 minutes combined in typical conditions. Weight, deck material and bag capacity are not given.
Cutting and power
A 40V brushless motor at 3,200 rpm on a 21-inch blade is the standard mid-tier pairing, a notch below the 60V and 80V decks and well above the brushed 20-inch kits. In weekly growth it mulches cleanly; in thick spring grass it slows, and that is where the four modes earn their keep. Side discharge clears heavy growth without clogging, rear discharge does the same with the bag off for a rough area, and the bag is for the front lawn. Seven heights give fine control, though the 3.55-inch top setting is a little low for owners who like a 4-inch summer cut on warm-season grass.
Runtime and batteries
Two 4.0 Ah packs at 40V hold about 320 watt-hours together, and the maker’s 88-minute combined figure works out to roughly 44 minutes per pack in typical conditions. That is a respectable number for the class and it is stated plainly, which is a point in the brand’s favor. Self-propel, tall grass and a low deck will cut into it, so an hour across both packs is a sensible planning figure for spring. The fast charger shortens the turnaround if you need a third run on a big lawn. The packs fit Wild Badger Power’s other 40V tools, a smaller range than the major brands.
Build, handling and ergonomics
Variable-speed drive is the right spec for a lawn with slopes and open stretches, since you can crawl on the grade and stride on the flat. The listing does not say whether the drive is front or rear wheel; rear is better on slopes with a full bag, so check the product page. Weight is not published, and a 21-inch self-propelled battery mower is a two-handed lift in any brand. A recurring comment from owners of mowers in this class is to tighten the handle knobs after the first cut and to keep the drive cable adjusted so the bail engages cleanly.
Living with it
No fuel, oil or plugs. Keep the blade sharp to protect both runtime and finish, scrape the deck after wet cuts and store the packs indoors at about half charge over winter. The warranty term is not stated in the listing, so confirm it on the product page and keep the receipt. Replacement bags, blades and plugs come from the maker rather than a store shelf, which is the usual trade with a smaller brand.
Alternatives to Consider
The Greenworks 40V 21-inch self-propelled kit with two 4.0 Ah packs is the mainstream match with a far larger tool range. The Ryobi 40V HP 21-inch self-propelled mower adds Home Depot support and a strong 40V catalog. If you want more motor rather than more modes, the Greenworks 60V 21-inch self-propelled kit is the step up in voltage.
Verdict
Buy the Wild Badger Power 40V 21-inch self-propelled mower if you have a medium-to-large lawn with gentle slopes, want four clipping modes and a stated runtime, and do not need batteries that fit a big tool family. Skip it if you want a 60V or 80V motor for heavy turf, a cut above 3.55 inches, or a brand with a dealer counter.
Full specifications
Wild Badger Power 40V 21-Inch Cordless Self-Propelled Lawn Mower with Two 40V 4.0 Ah Batteries and Charger FAQs
Wild Badger Power rates the pair at up to 88 minutes in typical conditions, which implies about 44 minutes per pack. Tall or wet grass, a low deck and constant self-propel will shorten that; treat an hour across both packs as a conservative plan for spring.
Rear discharge drops clippings straight out the back without the bag or mulch plug fitted. It is useful for cutting long grass quickly in a field corner where neither bagging nor a fine mulch is needed.
Yes. The listing says forward speed adjusts to match your walking pace, though it does not give the range in mph.
The listing describes two packs and a combined runtime, which suggests one pack at a time with the second swapped in. Confirm the port arrangement on the product page if dual-port matters to you.
