Kobalt 48V Max Self-Propelled Mower Runtime Boost Kit

Take the effort out of mowing—and the downtime out of your workflow—with the Kobalt 48V Max Self-Propelled Mower Runtime Boost Kit. This setup combines a high-performance mower with added battery capacity so you can cover more ground without stopping. The 48V 21-inch self-propelled mower delivers up to 60 minutes of runtime, making it ideal for properties up to 1/2 acre. Its brushless motor provides consistent, gas-free power, while rear-wheel drive helps you move smoothly across slopes and uneven terrain. The 8-position height adjustment and durable steel-reinforced deck give you control over cut quality, while features like push-button start, LED headlights, and vertical storage make it easy to use and store. The real advantage is extended runtime. Alongside the included 6.0Ah batteries, this kit adds two 24V 4.0Ah batteries—giving you more total power to finish your lawn in one pass or support other tools in your lineup. Built-in power indicators and advanced protection systems help maximize battery life and performance. Powered by Kobalt’s dual 24V battery system delivering 48V output, this kit is compatible with 100+ tools, making it easy to expand beyond mowing. Backed by Kobalt’s 5-year tool and 3-year battery warranties, this kit is built for anyone who wants smoother operation, longer runtime, and fewer interruptions from start to finish.