About this replacement
Designed for Lenovo devices. Compatible models include F30, F30A, F31, F31A, Quanta CW3. Replacement part numbers include SQU-521, 3UR18650-2-QC-CW3, 3UR18650F-2-QC-CW3A, SQU-521 916C4840F, SQU-521 916C5120F. Key specifications: 11.1V, 4400mAh, Li-ion.