Genuine L21L4P72 Laptop Battery for Lenovo ThinkPad T16 Gen 1/Gen 2 & ThinkPad P16s Gen 1 Series

Upgrade your productivity with the Genuine L21L4P72 Laptop Battery, engineered for perfect compatibility with Lenovo ThinkPad T16 Gen 1 / T16 Gen 2 and ThinkPad P16s Gen 1 mobile workstations. Featuring stable 15.44V output, a long-lasting 3400mAh capacity (52.5Wh), and high-quality 4-cell Li-ion power, this replacement battery delivers the reliability professionals need for business travel, engineering tasks, and all-day workflows.

Designed as a direct replacement for multiple Lenovo part numbers—L21L4P72, L21C4P72, L21D4P72, L21M4P73, L21D4P73, L21M4P74, and FRUs 5B10W51870 / 5B10W51871 / 5B10W51872 / 5B10W51873—it ensures seamless installation and OEM-level performance.

About this item

• Voltage: 15.44V

• Capacity: 3400mAh / 52.5Wh

• Cell Type: Premium 4-cell Lithium-ion

• Compatibility:
  Lenovo ThinkPad T16 Gen 1 / Gen 2, ThinkPad P16s Gen 1

• Replaces Part Numbers:
  L21L4P72, L21C4P72, L21D4P72, L21M4P73, L21D4P73, L21M4P74
  FRU: 5B10W51870, 5B10W51871, 5B10W51872, 5B10W51873

• Stable Performance: Consistent power output with intelligent protection against over-voltage, overheating, and short-circuits

• High Energy Efficiency: Delivers longer runtimes for heavy multitasking and professional workloads

• Perfect Fit: 100% compatibility with original Lenovo system architecture

Compatible Models (use “Ctrl+F to find your model quickly”)

• Fit for Lenovo ThinkPad T16 Gen 1 2022 Series;
• Fit for Lenovo ThinkPad T16 Gen 2 2023 Series;
• Fit for Lenovo ThinkPad P16s Gen 1 2022 Series;
• Fit for Lenovo ThinkPad P16s Gen 2 2023 Series.

Replacement for Part Number:

L21D4P73，SB10W51974，5B10W51873，L21C4P72，SB10W51973，5B10W51872，L21M4P74，SB10W51972，5B10W51871，L21L4P72，SB10W51969，5B10W51868，L21D4P72，SB10W51971，5B10W51870，L21M4P73，SB10W51970，5B10W51869.