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If you let your lawn go much longer, you need to cut higher and work your way down or cut partial swaths to get it back under control. It handles your weekly cut well and has the power to push through a couple of extra days worth of growth. Kobalt’s cutting power is pretty standard for cordless mowers.
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If we pull out just the 40V class (36V/40V Max), only Stihl brings more blade speed to the table when things get tough. As the mower felt more resistance, it ramped up the power to 3174 RPM, or 181.7 MPH blade tip speed for a mid-pack finish. However, when we threw the Kobalt 40V self-propelled mower under a heavier workload, we saw the blade tip speed accelerate 22.6 MPH higher. Certainly, this is fast enough to get through a maintenance cut easily enough, but it was one of the slower models we tested. Its 19-1/4″ blade whipped around at 2780 RPM, which pans out to 159.1 MPH blade tip speed. Simulating a normal weekly maintenance cut, we tested the Kobalt 40V mower under a light load. So we took a look at the blade tip speeds of all our cordless mowers – under both light and heavy loads – to see which model fared the best from the cordless class. In the case of battery-powered mowers, as the mower senses more resistance the brushless motor directs more power to the blade tip. As the grass gets thicker, the harder the mower has to work at keeping that blade tip speed up. Want the detailed data surrounding our testing methods? Check out our cordless mower shootout! Cutting PowerĬutting speed is important because the faster the blade spins, the easier time your mower has cutting the grass. Self-Propelled Battery Lawn Mower Ranking: 8th Place Pick this one up if your lawn is a 1/4-acre or less and you rarely let it go more than a week between cuts during the peak growing season. But it makes up for it with quiet operation and fantastic pricing for bargain hunters. It doesn’t have the cutting power and runtime that some of the higher voltages do. The self-propelled version of the Kobalt 40V mower does a fine job for homeowners that keep up with their lawns.