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Rectangular black lithium-ion laptop battery with label showing part numbers

PowerWarehouse

PowerWarehouse L20M4P75 laptop battery ThinkPad P1 Gen 4 X1 Extreme Gen 4

SKU CH-QPXY-6ZKDR

Replacement 4-cell lithium-ion battery delivering 15.52 V and 5805 mAh for ThinkPad P1 Gen 4 and X1 Extreme Gen 4

  • Battery type4 Cell Lithium-Ion
  • Compatible withLENOVO THINKPAD P1 GEN 4, X1 EXTREME 4TH GEN
  • Direct replacement for ThinkPad P1 Gen 4 and X1 Extreme Gen 4
  • Matches OEM part numbers L20M4P75, SB11B79215, 5B11B79217, L20D4P75, SB11B79216, 5B11B79218
  • 4-cell lithium-ion chemistry delivers 15.52V and 5805mAh capacity
  • Brand-new condition ensures full rated performance from first charge
  • 12-month manufacturer warranty included for purchase confidence

Compatible Replacement Battery

This new lithium-ion battery replaces the original unit in ThinkPad P1 Gen 4 and X1 Extreme Gen 4 laptops. It matches the OEM part numbers L20M4P75, SB11B79215, 5B11B79217, L20D4P75, SB11B79216 and 5B11B79218. Installation restores mobile power without modification.

Voltage and Capacity Specification

The pack delivers 15.52V and 5805mAh across four cells. These figures determine whether the battery fits the power curve and runtime expectations of the supported models. Confirm the voltage and capacity against your service manual before purchase.

Suited for Direct OEM Swaps

This unit suits owners who need a like-for-like replacement matching the listed part numbers. It is not for buyers who want more storage or a higher capacity than the original 5805mAh design. Builders needing a different voltage or cell count should look at other options.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $54.99
Pricier than about 85% of the 27,790 comparable items (median $30.99).

Specifications

Product
Part numberL20M4P75, SB11B79215, 5B11B79217, L20D4P75, SB11B79216, 5B11B79218
Power
Battery type4 Cell Lithium-Ion
Compatibility
Compatible withLENOVO THINKPAD P1 GEN 4, X1 EXTREME 4TH GEN

Questions about this item

Will the 5805 mAh capacity give me the same runtime as the original battery?

The 5805 mAh rating at 15.52 V matches the original pack specification, so daily runtime should be comparable to when the laptop was new.

Does the 15.52 V rating work with the standard charging circuit in the ThinkPad P1 Gen 4?

Yes, 15.52 V is the exact voltage the laptop's charging system expects, so it charges normally without any adapter changes.

Will this pack fit inside the X1 Extreme Gen 4 chassis without modification?

The battery is built to the L20M4P75 form factor, so it slots directly into the P1 Gen 4 and X1 Extreme Gen 4 battery bay with no extra brackets or trimming.

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