PATONA Battery for Asus ZenBook UX303 UX303L UX303LA UX303LB UX303LN C31N1339 High-performance battery with new high-quality brand cells from manufacturers such as Panasonic, LG, and Sanyo. 100% compatible with original Asus batteries due to custom-fit design, including overcharge and short-circuit protection. Technical specifications: Voltage: 11.31 volts, Capacity: 4400mAh, Cell type: Li-Polymer, Brand: PATONA. The battery is suitable for the following models: Asus ZenBook UX303 series, UX303L series, UX303LA series, UX303LB series, UX303LN series. Original designation of the Asus batteries. This battery replaces the following battery types: Asus C31N1339. Important information: With this Li-Polymer battery, you are purchasing a quality product. The battery is 100% identical to the original battery. All batteries are manufactured according to the highest European quality standards and are characterized by extreme durability. Additionally, our batteries have the highest cycle stability, allowing for a high number of possible charge-discharge cycles. The low self-discharge of the batteries ensures minimal energy loss during periods of non-use. The compatible replacement batteries include all electronic safety features of the original batteries and can naturally be charged with your original power supply. The images are for illustrative purposes only; the delivered item may differ from the image.