BTI battery compatible with Lenovo Legion Pro 5 16ARX8 / 16IRX8, Pro 7 16IRX8H, ThinkBook 16p G4 IRH / G5 IRX. OEM P/N: 5B11K38949, 5B11K38961, 5B11N45428, L22M4PC0, SB11K38956, 5B11K38953, 5B11N45395, 5B11N45439, L22X4PC0, SB11K38960, 5B11K38955, 5B11N45419, L22B4PC0, SB11K38952, SB11N45400, 5B11K38959, 5B11N45420, L22D4PC0, SB11K38954, SB11N45431 We recommend: Advance exchange for this product is available directly through Origin Storage throughout the 18-month warranty period. Please note: Please get in touch with us if you have any questions.