The AA-PBUN4AR Battery is a high-quality replacement battery designed for Samsung NP900X5L, 940X3L, NT900X5P, NT900X5L, NP940X3LK01US laptops. It offers a reliable and efficient power source with a capacity of 39Wh and a voltage of 7.7V. This Li-Polymer battery is brand new, comes with a 12-month warranty, and is certified by CE and RoHS.