IBM 02k6576 replacement laptop battery by Amstron is made from the highest quality cells and parts. Amstron provides reliable, high performance replacement batteries for your IBM laptops. The LIB-35 is designed to be 100% manufacturer compatible with IBM OEM part numbers 02K6576, 02K6577, and 02K6578. This precision-engineered battery is designed for use in the IBM ThinkPad i1400 and i1500 (Model 2611-xxx> series of notebooks. • Chemistry: Li-Ion • Rating: 14.8V 3600mAh • 100% original manufacturer compatible • Guaranteed to meet or exceed original specifications • Highest quality Japanese battery cells • Full 1 year warranty • Does not Replace: 02K6524, 02K6525 and 02K6526