Replaces OEM # 5B11M90097, 5B11M90098, 5B11M90099, 5B11M90100, L24B3P70, L24D3P71, L24M3P70, SB11M89898, SB11M89900, SB11M89901 Fits: LENOVO THINKPAD X1 2-in-1 Gen 10, X1 2-in-1 Gen 10 21NU, X1 2-in-1 Gen 10 21NV, X1 2-in-1 Gen 10 21Q0, X1 2-in-1 Gen 10 21Q1, X1 Carbon 13th Gen, X1 Carbon 13th Gen 21NS, X1 Carbon 13th Gen 21NT, X1 Carbon 13th Gen 21NX, X1 Carbon 13th Gen 21NY Specs: 11.7V, 4875MAH, 57WH, 3 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