21" Cordless Lawn Mower, 40V Lightweight Push Mower with 2×4.0Ah Battery &

The KraftSense 21-inch cordless push mower is a battery-powered walk-behind designed for suburban homeowners who want to skip the gas-engine routine. It runs on a 40V dual-battery system and ships with two 4.0Ah batteries already in the box, so there is nothing extra to buy before your first mow. The target user is someone with a lawn up to about a quarter acre who values simplicity over raw power.

The dual-battery setup delivers up to 40 minutes of runtime, which the brand says is enough to cover a quarter-acre lot. The brushless motor is the other headline feature here. Unlike a brushed motor or a gas engine, it requires no oil changes, spark plug swaps, or carburetor cleaning. That means the start-of-season ritual shrinks to charging the batteries and going. For anyone who has wrestled with a gas mower that would not start in spring, that is a meaningful shift in day-to-day experience.

Cutting flexibility is handled through eight height positions ranging from 1.2 inches to 4 inches, covering the needs of common grass types like Bermuda, Zoysia, St. Augustine, and Tall Fescue. The close-edge cutting design is worth noting for yards with fences, raised beds, or garden borders, since it reduces the number of strips you need to go back and trim separately. Grass management is handled three ways: bagging with the 60-liter collection bag, mulching, or side discharge, so you can adapt to wet clippings or heavy growth without being stuck with one option.

A few limits are worth knowing before you buy. The 40-minute runtime is the ceiling, and real-world time will vary with grass thickness and height. The 21-inch cutting width means more passes on wider open lawns compared to larger deck sizes. The listing does not mention a self-propelled drive, so this is a push mower, which matters on sloped yards. Charging time for the batteries is also not specified in the available product information.

Verdict: This mower makes the most sense for homeowners with a flat to gently rolling lawn of a quarter acre or less who want to eliminate gas maintenance for good. If your yard is larger or has significant slopes, you may want to look at options with longer runtime or a self-propelled drive.

• Battery voltage: 40V
• Batteries included: 2 x 4.0Ah
• Runtime: Up to 40 minutes
• Coverage: Up to 1/4 acre per charge
• Cutting deck width: 21 inches
• Cutting height range: 1.2 inches to 4 inches
• Height positions: 8
• Grass collection bag capacity: 60 liters
• Grass management modes: Mulching, side discharge, bagging
• Motor type: Brushless

A great fit if you:

• Have a flat or gently sloped lawn of a quarter acre or smaller
• Want to stop buying gas, oil, and spark plugs every season
• Grow Bermuda, Zoysia, St. Augustine, or Tall Fescue and need adjustable cutting heights
• Have fences, flower beds, or garden borders where close-edge cutting saves extra trimming time
• Prefer having both batteries in the box rather than buying them separately

Consider something else if you:

• Have a lawn significantly larger than a quarter acre, where 40 minutes of runtime may fall short
• Need a self-propelled mower to handle steep or heavily sloped terrain

Do the batteries come included?
Yes. The mower ships with two 4.0Ah 40V batteries, so you can mow right away without a separate battery purchase.

How much lawn can it cover on a charge?
The manufacturer states up to 40 minutes of runtime, which it rates as sufficient for lawns up to a quarter acre. Thicker or taller grass may reduce that time.

What grass types does the height adjustment support?
The eight cutting positions, ranging from 1.2 inches to 4 inches, are designed to accommodate Bermuda, Zoysia, St. Augustine, and Tall Fescue.

Can I mulch clippings instead of bagging them?
Yes. The mower offers three grass management options: bagging with the 60-liter collection bag, mulching, and side discharge, so you can choose based on conditions.