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Black rectangular laptop battery with label showing model numbers

GreenTechLLC

GreenTechLLC 5M11L99160 L20M4P75 90Wh laptop battery

SKU CH-C4XN-M40FW

A 90 Wh four-cell lithium-ion battery built for Lenovo ThinkPad P1 Gen 4 through 6 and X1 Extreme Gen 4 and 5 models

  • Battery type4 Cell Lithium-Ion
  • Battery voltage rating15.52 V
  • Battery capacity5805mah
  • Measurements12.7 × 2.75 × 0.6
  • Product colorBlack
  • Product typeBattery
  • 90 Wh capacity keeps ThinkPad P1 and X1 Extreme running longer
  • 52 V lithium-ion chemistry matches original power delivery
  • Four-cell design fits the internal bay without modification
  • Replaces a wide range of OEM part numbers for direct swap
  • CE, FCC and RoHS certified for safe operation

GreenTech 90 Wh replacement battery

This 90 Wh lithium-ion battery replaces the original Lenovo part for ThinkPad P1 Gen 4, Gen 5 and Gen 6 as well as X1 Extreme 4th and 5th generation models. It is a direct-fit, four-cell unit built to the same 15.52 V specification as the OEM component.

15.52 V four-cell interface limit

The pack delivers 5805 mAh at a fixed 15.52 V, so runtime scales linearly with the laptop’s power draw. It cannot be used in systems that require a different voltage or cell count, and it does not support hot-swap or external charging.

90 Wh capacity for mobile workstations

At 90.1 Wh the battery powers a typical P1 or X1 Extreme workload through a full working day. Heavy GPU or sustained CPU loads will deplete it faster, and the four-cell design offers no extended-runtime option beyond this capacity.

How it compares

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

Price $55.99
Pricier than about 86% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model name5B11B79217, 5B11B79218, 5B11K07736, 5B11M960061, 5M11E25313, 5M11E25314, 5M11L99160, 5M11L99161, 5M11L99163, 5M11L99164, 5M21L37921, 5M21L37922, L20D4P75, L20M4P75, SB11B79215, SB11B79216, SB11K07734, SB11M89862
Part number5B11B79217, 5B11B79218, 5B11K07736, 5B11M960061, 5M11E25313, 5M11E25314, 5M11L99160, 5M11L99161, 5M11L99163, 5M11L99164, 5M21L37921, 5M21L37922, L20D4P75, L20M4P75, SB11B79215, SB11B79216, SB11K07734, SB11M89862
Product colorBlack
Product typeBattery
Power
Battery type4 Cell Lithium-Ion
Battery voltage rating15.52 V
Battery capacity5805mah
Size & build
Measurements12.7 × 2.75 × 0.6
Product weight0.7 lb (0.32 kg)
Compatibility
Compatible withLENOVO THINKPAD P1 GEN 4, P1 GEN 4 20Y3, P1 GEN 4 20Y4, P1 GEN 5, P1 GEN 5 21DC, P1 GEN 5 21DD, P1 GEN 6, P1 GEN 6 21FV, P1 GEN 6 21FW, X1 EXTREME 4TH GEN 20Y5, X1 EXTREME 4TH GEN 20Y6, X1 EXTREME GEN 5, X1 EXTREME GEN 5 21DE, X1 EXTREME GEN 5 21DF

Questions about this item

Which part number should I order for a ThinkPad P1 Gen 5?

The battery replaces OEM part numbers 5M11E25313, 5M11E25314, 5M11L99160, 5M11L99161, 5M11L99163, 5M11L99164, 5M21L37921, 5M21L37922, L20D4P75, L20M4P75 and the SB11 series, so any of those listed will fit a P1 Gen 5.

What runtime does the 90.1 Wh rating give in a ThinkPad X1 Extreme Gen 5?

At 15.52 V and 5805 mAh the pack stores 90.1 Wh; actual runtime depends on the workload, screen brightness and power profile of the X1 Extreme Gen 5.

What connector does the 4-cell 15.52 V pack use and what does it limit?

The pack uses the standard Lenovo internal battery connector for the P1 and X1 Extreme series, limiting installation to those compatible models listed.

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