The 00HW021 is a high-quality, 3-cell Lithium-Polymer (Li-Polymer) replacement battery designed for various Lenovo ThinkPad notebooks, including the Yoga 460, Yoga 14, and P40 Yoga series. With a standard voltage of 11.4V and a 53Wh capacity, it provides a reliable and efficient power source for uninterrupted productivity and mobile use. Built with Grade A cells for stable performance, this internal battery includes certified safety features to protect against common issues like overcharging, overheating, and short-circuiting. It is a dependable solution for restoring your compatible laptop's battery life to optimal levels.