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Rectangular black laptop battery with connector on one end

PowerWarehouse

PowerWarehouse 5B11K38959 laptop battery for Legion Pro 5 16, Pro 7 16, ThinkBook 16P G4/G5

SKU CH-2BPC-YDWX1

Replacement 4-cell lithium-ion battery rated at 15.44 V and 5181 mAh for select Legion Pro and ThinkBook 16-inch laptops

  • Compatibility5B11K38959, 5B11N45420, L22D4PC0, SB11K38954, SB11N45431
  • Battery Type4 Cell Lithium-Ion
  • Battery CapacityLEGION PRO 5 16ARX8, LEGION PRO 5 16ARX8 82WM, LEGION PRO 5
  • Compatible with Legion Pro 5, Pro 7 and ThinkBook 16P models
  • Replaces OEM part numbers including 5B11K38959 and 5B11N45420
  • Four-cell lithium-ion design delivers 5181mAh capacity
  • Operates at 15.44V for stable system power
  • Brand-new condition ensures full performance from first charge

PowerWarehouse 5B11K38959 4-cell Li-ion battery

This replacement battery delivers 15.44 volts and 5181 mAh capacity across four lithium-ion cells. It is built to fit Legion Pro 5 16 and Pro 7 16 models as well as ThinkBook 16P G4 and G5 systems. The part is supplied new and includes a twelve-month warranty from the manufacturer.

Suits owners of listed Legion

The battery matches OEM references 5B11K38959, 5B11N45420, L22D4PC0, SB11K38954 and SB11N45431. Buyers who need a different voltage, a higher capacity or a form factor for a smaller chassis should look at other options.

Check your laptop model number

Confirm the exact model such as 82WM, 82WK, 82WQ, 21JB or 21N5 appears on your device or in the service manual. Verify the original battery carries one of the compatible OEM numbers listed above to ensure correct fit and connector alignment.

Highlights

  • Compatible with Legion Pro 5, Pro 7 and ThinkBook 16P models
  • Replaces OEM part numbers including 5B11K38959 and 5B11N45420
  • Four-cell lithium-ion design delivers 5181mAh capacity
  • Operates at 15.44V for stable system power
  • Brand-new condition ensures full performance from first charge

Specifications

Compatibility5B11K38959, 5B11N45420, L22D4PC0, SB11K38954, SB11N45431
Battery Type4 Cell Lithium-Ion
Battery CapacityLEGION PRO 5 16ARX8, LEGION PRO 5 16ARX8 82WM, LEGION PRO 5 16IRX8, LEGION PRO 5 16IRX8 82WK, LEGION PRO 7 16IRX8H, LEGION PRO 7 16IRX8H 82WQ, THINKBOOK 16P G4 IRH, THINKBOOK 16P G4 IRH 21JB, THINKBOOK 16P G5 IRX, THINKBOOK 16P G5 IRX 21N5

Questions about this item

Will the 5B11K38959 battery fit my ThinkBook 16P G4 IRH 21JB?

Yes, the 5B11K38959 is listed as compatible with the ThinkBook 16P G4 IRH 21JB among other models.

Does this 15.44 V battery work with the original 15.44 V charging circuit in a Legion Pro 7 16IRX8H?

The replacement operates at the same 15.44 V as the original packs, so it works with the existing charging circuit.

How can I verify the 5181 mAh capacity is reporting correctly after installation?

Check the battery details in the OS power settings or Lenovo Vantage; they should show a design capacity near 5181 mAh.

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