The BTI notebook battery, designed by Battery Technology, is a high-quality power solution for UPS and power devices. This product, suitable for a range of Lenovo notebooks, offers a substantial 4570 mAh capacity and 52.9 Wh of energy, ensuring that your device remains operational for longer periods. Its 3-cell lithium-ion technology not only provides reliable power but also maintains charge efficiently over time. Compatibility with several OEM Lenovo battery models makes it an ideal replacement or upgrade, ensuring your notebook continues to perform efficiently. Additionally, adherence to UKCA and WEEE standards underscores the commitment to safety and environmental responsibility. Whether for work or leisure, this notebook battery ensures that your device stays powered when you need it most.