Replaces OEM # 01AV454, L16L4P91, SB10K97599, 5B10W13919, SB10T83162 Fits: LENOVO THINKPAD X1 TABLET 3RD GEN, THINKPAD X1 TABLET 3RD GEN 20KJ, THINKPAD X1 TABLET 3RD GEN 20KK Specs: 7.72V, 42WHR, 5440MAH, 4 CELL Brand New GreenTech replacement battery - 6 Month Replacement Warranty Each product has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety