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Black rectangular 4-cell lithium-ion laptop battery

GreenTechLLC

GreenTechLLC laptop battery 77Whr 15.36V 5075mAh 4-cell for ThinkPad X1 Extreme Gen 1 P1 Gen 1

SKU CH-XVYC-0PAPK

A 77Whr 4-cell lithium-ion replacement battery for ThinkPad X1 Extreme Gen 1 and P1 Gen 1 models

  • Battery type4 Cell Lithium-Ion
  • Battery voltage rating15.36 V
  • Battery capacity5075MAH
  • Product colorBlack
  • Product typeBattery
  • Compatible withLENOVO THINKPAD P1 GEN 1, P1 GEN 1 20MD, P1 GEN 1 20ME, X1 E
  • 77 Whr capacity supports long work sessions away from power
  • 36 V 5075 mAh 4-cell lithium-ion matches original electrical specs
  • Replaces nine OEM part numbers including 01YU911 01AY969 5B10W13899
  • Fits ThinkPad X1 Extreme Gen 1 and P1 Gen 1 across 20MF 20MG 20MD 20ME variants
  • CE FCC RoHS certified with tested voltage stability and circuit protection

Replacement battery for ThinkPad X1 Extreme Gen 1

This 77Whr lithium-ion pack restores mobile power to Lenovo ThinkPad X1 Extreme Gen 1 and P1 Gen 1 workstations. It matches the original 15.36V 5075mAh specification across multiple OEM part numbers. The four-cell design fits the internal battery bay without modification.

Direct OEM replacement

The unit replaces part numbers including 01YU911, 01AY969, 5B10W13899, 5B10W13900, L17C4P72, L18M4P71, SB10Q76929, SB10S57317 and SB10T83143. Each battery is tested for correct voltage, stable current, low self-discharge and built-in circuit protection. CE, FCC and RoHS certifications confirm compliance with safety standards.

Black four-cell pack installs in the existing bay

The black housing uses the same form factor as the factory battery, so no chassis changes or extra brackets are required. Connectors align with the motherboard header for a secure fit. Users who need a higher-capacity alternative or a different voltage will not be served by this model.

How it compares

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

Price $61.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model name01YU911, 01AY969, 5B10W13899, 5B10W13900, L17C4P72, L18M4P71, SB10Q76929, SB10S57317, SB10T83143
Part number01YU911, 01AY969, 5B10W13899, 5B10W13900, L17C4P72, L18M4P71, SB10Q76929, SB10S57317, SB10T83143
Product colorBlack
Product typeBattery
Power
Battery type4 Cell Lithium-Ion
Battery voltage rating15.36 V
Battery capacity5075MAH
Compatibility
Compatible withLENOVO THINKPAD P1 GEN 1, P1 GEN 1 20MD, P1 GEN 1 20ME, X1 EXTREME GEN 1, X1 EXTREME GEN 1 20MF, X1 EXTREME GEN 1 20MG

Questions about this item

When will the 4-cell 77Whr lithium-ion pack need replacing?

The 5075mAh capacity degrades with each charge cycle; typical laptop batteries last several hundred cycles before runtime drops noticeably.

What limits runtime during a full-day workload on the ThinkPad X1 Extreme Gen 1?

The 77Whr capacity sets the energy ceiling; sustained high CPU and GPU draw will exhaust the 5075mAh reserve faster than light tasks.

Does the 15.36V battery run hot or draw extra power when the laptop is on all day?

The pack operates at its rated 15.36V with built-in circuit protection; normal charging and discharging produce only modest warmth.

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