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Black rectangular laptop battery with connector and label

ARENTI

ARENTI L20D4P75 2 in 1 accessory 90Wh 15.48V

SKU CH-7AHN-ATWK9 MPN L20D4P75

90Wh 15.48V replacement battery for Lenovo ThinkPad P1 and X1 Extreme workstations

  • 90Wh capacity delivers extended runtime for demanding workloads
  • 48V voltage matches original specifications for reliable power delivery
  • 4-cell design balances energy density with compact form factor
  • Compatible with ThinkPad P1 Gen 4, 5, 6 and X1 Extreme Gen 4, 5 series
  • Replaces multiple OEM part numbers including L20D4P75 and L20M4P75

Replacement Battery for ThinkPad P1 and X1 Extreme

The ARENTI L20D4P75 is a 90Wh lithium-ion battery rated at 15.48V with a 5815mAh capacity across four cells. It is built as a direct replacement for the original power pack in compatible mobile workstations. The black unit arrives new and ready for installation after verifying the part number.

Upgrading from a Depleted Original Pack

This unit replaces Lenovo part numbers including SB11B79216, 5B11B79218, SM11E25312, 5M11E25314, 5M11L99161, SB11K07735 and 5B11K07737. The jump is worth it when the factory battery no longer holds sufficient charge for a full work session. Confirm the exact model printed on the existing pack before ordering to ensure a proper match.

Installation and Calibration Limits

The battery connects to the motherboard via the standard internal connector used in the listed ThinkPad models. After fitting, the supplier advises discharging to five percent, then completing three to twelve full charge cycles with the original charger to calibrate the fuel gauge. Buyers who cannot open the chassis or who need a higher-capacity option not offered here should look elsewhere.

Highlights

  • 90Wh capacity delivers extended runtime for demanding workloads
  • 48V voltage matches original specifications for reliable power delivery
  • 4-cell design balances energy density with compact form factor
  • Compatible with ThinkPad P1 Gen 4, 5, 6 and X1 Extreme Gen 4, 5 series
  • Replaces multiple OEM part numbers including L20D4P75 and L20M4P75

Specifications

No published specifications for this item yet.

Questions about this item

What laptop models does the L20D4P75 90Wh battery fit?

It fits Lenovo ThinkPad P1 Gen 4 (Type 20Y3, 20Y4), P1 Gen 5 (Type 21DC, 21DD), P1 Gen 6 (Type 21FV, 21FW), X1 Extreme 4th Gen (Type 20Y5, 20Y6) and X1 Extreme Gen 5 (Type 21DE, 21DF).

What is the common installation mistake with the L20D4P75 battery connector?

The connector must be seated firmly on the motherboard; a loose connection prevents charging and power-on.

How should the new L20D4P75 5815mAh battery be conditioned?

Discharge to 5 %, then charge fully and repeat the cycle 3 to 12 times to wake up the cells.

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