• Laptop Battery for Lenovo ThinkPad X201i • Compatible Part Numbers: IBM 43R9255-EV7|Lenovo 42T4649|Lenovo 43R9255 • Newest Premium Grade Cells: Premium Power Products replacement laptop batteries use premium grade cells to ensure fast charges and low power consumption. • Quality and Compatability : Premium Power laptop batteries are 100% compatible with the original manufacturer and meet CE/FCC/ROHS/UL certified safety standards. • Safety and Protection: Premium Power Products replacement laptop batteries are built with your safety in mind. All of our batteries come with built in circuit protection against: over voltage, over current, over charge, over discharge and over heating (i.e. thermal runaway). • Color: Black • Condition: New - 100% OEM Compatible • Capacity: 7800 mAh • Battery Technology: Li-ion