Lenovo L19M3P73 is an official internal rechargeable laptop battery primarily designed for ultra-premium, thin-and-light business notebooks.
Lenovo L19C3P71/L19M3P73 Laptop Battery – Available for ThinkPad X1 Nano Gen 1 models.

L19M3P73 Original Lenovo Battery 48.2Wh for ThinkPad X1 Nano Gen 1 (20UN/20UQ)

• SpecificationsModel: L19M3P73. Type: Li-ion. Voltage: 11.58V. Capacity: 48.2Wh. Up to 1000 recharge cycles over the life of the battery.
• Compatible Laptop ModelsLenovo ThinkPad X1 Nano Gen 1st Series Notebook. Lenovo ThinkPad X1 Nano Gen 1-20UN000SGB, 1-20UN0022IX, 1-20UN00ENMZ, 1-20UN00BKPH, 1-20UN006GGQ, 1-20UN0014GE, 1-20UQ001AMN, 1-20UN00D0ED, 1-20UN00ABPB, 1-20UN000YSP, 1-20UN0072CX, 1-20UN001ACY, 1-20UN00EHCK, 1-20UN0065CK, 1-20UN0074FR, 1-20UN003MGB, 1-20UN00FPEQ, 1-20UN005XMX, 1-20UN008NAD, 1-20UN0040FE, 1-20UN00E0IW, 1-20UN006AGM, 1-20UN0029CX, 1-20UN003SSC, 1-20UN009XPB, 1-20UN005PRT, 1-20UN001DAT, 1-20UN0045PG, 1-20UN00AAMS, 1-20UN005YSP, 1-20UN002UCX, 1-20UN00A3MD, 1-20UN002MRI, 1-20UN002CRI, 1-20UN00ECMD, 1-20UN009EFE, 1-20UN001JSP, 1-20UN000SSC, 1-20UN001QIG, 1-20UN00EPFE, 1-20UN00C3AU, 1-20UN005ACA.
• Replace Part NumberL19C3P71, L19M3P72, L19M3P73, 5B10W13962, 5B10W13963, 5B10W13964, SB10T83205, SB10T83206, 3ICP5/74/78.
• Matters Need AttentionBefore purchasing,
  Laptop Compatibility
  This battery is explicitly designed to fit the following device line:
  • • Lenovo ThinkPad X1 Nano Gen 1 Series (specifically Type 20UN and 20UQ)
  Interchangeable Part Numbers
  If you are looking for an exact OEM replacement, Lenovo lists these part numbers as completely interchangeable with the L19M3P73
  • L19C3P71
  • L19M3P72
  • 5B10W13963
  • 5B10W13962
  • 5B10W13964
  • SB10T83206
  • SB10T83205
  • SB10T83207