【High-Performance Capacity】Engineered with premium lithium-ion cells, this Kobalt 40V Battery delivers 3X longer runtime than standard batteries. Perfect for demanding tasks with Kobalt 40V MAX tools, ensuring uninterrupted power for lawn mowers, chainsaws, and trimmers 【Smart LED Power Indicator】Featuring a 4-LED fuel gauge system, this 40 Volt Kobalt Battery provides real-time power status updates. Never get caught off-guard with precise battery level monitoring during intensive yard work 【Universal Compatibility】Designed as a direct replacement for Kobalt 40V tools (KB-540-06/KB440-06/KB240-06 series). This KOBALT battery 40 VOLT powers all 40V MAX cordless tools, including leaf blowers, hedge trimmers, and pole saws 【Advanced Safety Protection】Built with multiple safety mechanisms, this 40v lithium battery features overcharge/overheat protection and durable ABS+PC casing. Certified for reliable performance in various weather conditions 【Eco-Friendly & Efficient】Our kobalt battery 40V utilizes memory-free technology, allowing flexible charging without capacity loss. Enjoy 500+ charge cycles with consistent power output for all your outdoor power tools. Maximize your outdoor tool performance with the Kobalt 40V Battery 3.5Ah, the ultimate power solution for Kobalt 40V MAX cordless tools. This premium 40v lithium battery delivers 3X longer runtime than standard batteries, ensuring uninterrupted operation for lawn mowers, chainsaws, and trimmers. Featuring a smart 4-LED power indicator, this KOBALT battery 40 VOLT provides real-time charge status for optimal usage planning. Compatible with KB-540-06, KB440-06, and KB240-06 series tools, it's engineered with advanced safety protections and eco-friendly lithium-ion technology. The 40 Volt Kobalt Battery maintains consistent power output through 500+ charge cycles, making it the reliable choice for demanding yard projects.