Replaces OEM # L23C4P72, SB11H56312, 5B11H56411, L23M4P71, SB11H56313, 5B11H56412 Fits: LENOVO THINKPAD T16 GEN 3, T16 GEN 3 21MN, T16 GEN 3 21MQ, T16 GEN 4, T16 GEN 4 21QN, T16 GEN 4 21QQ, P16S GEN 4, P16S GEN 4 21QR, P16S GEN 4 21QS, P16S GEN 4 21RX, P16S GEN 4 21RY Specs: 15.44V, 86WH, 5570MAH, 4 CELL Brand New GreenTech replacement battery - 6 Month Replacement Warranty Each products has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety