【Fresh Power Reserve】Brand-new 3.5Ah lithium-ion battery engineered for Kobalt 80V tools. Offers extended runtime and reduces downtime, making it an ideal spare or replacement battery for your power equipment. 【Consistent High Performance】Delivers steady, fade-free power with zero memory effect, ensuring reliable performance every time. Fully compatible with Kobalt 80V MAX system of tools and chargers. 【Wide Compatibility】Designed to work seamlessly with Kobalt 80V tools and chargers, including models KB2580-06, KB580-06, KB680-06, KB280-06, and chargers KRC 30-06, KRC 80-06, KRC 0280-06, and S-L500. 【Smart LED Indicators】Features a convenient 3-LED power level indicator for real-time battery status updates. Quickly check remaining runtime at the press of a button. 【Advanced Safety Protection】Built with multiple protective measures against overcharging, overcurrent, overheating, and short circuits. Safely supports overnight charging with peace of mind.