Lenovo part:  Lenovo S10-2 6 Cell Li Battery (W)

Overview:

Features and Benefits: * Delivers up to 3.5 hours of system run time* * Over-discharge protection * Black or white option complements your notebook * Offers proven battery technology with balanced performance, capacity and longevity * Backed by a 1-year limited warranty with renowned Service and Support from Lenovo *Battery life will vary based on many factors, including brightness, applications, power management, battery conditioning and customer preferences.