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Rectangular black lithium-ion battery pack with label showing 39.3Wh 11.58V 3400mAh 3-cell

GreenTechLLC

GreenTechLLC L21L3P71 laptop battery 39.3Wh 11.58V 3400mAh 3-cell black for ThinkPad P14s Gen 3 4 T14 Gen 3 4

SKU CH-9X9Y-6P5FT

A 39.3 Wh, 3-cell lithium-ion battery replacing multiple Lenovo part numbers for ThinkPad P14s and T14 Gen 3 and 4 models

  • ColorBlack
  • TypeBattery
  • CompatibilityLENOVO THINKPAD P14S GEN 3, P14S GEN 3 21J5, P14S GEN 3 21J6
  • Battery Type3 Cell Lithium-Ion
  • Battery Voltage11.58V
  • Battery Capacity3400MAH
  • Ready to install in ThinkPad P14s Gen 3 and Gen 4 models
  • Direct replacement for OEM part numbers 5B10W51860 through 5B11M90024
  • 3 Wh capacity restores full mobile runtime
  • 3-cell lithium-ion design at 11.58 V matches original voltage
  • Tested for stable current, low self-discharge and CE, FCC, RoHS safety marks

Replacement battery for ThinkPad P14s and T14

This new GreenTechLLC battery replaces a wide range of Lenovo OEM part numbers for ThinkPad P14s Gen 3, P14s Gen 4, T14 Gen 3 and T14 Gen 4 models. It is a 3-cell lithium-ion unit rated at 11.58V, 3400mAh and 39.3Wh. The black pack is designed as a direct physical and electrical substitute for the original equipment.

Suits owners restoring mobility to a compatible

The cell count and voltage match the factory specification, so the battery fits the existing chassis without modification. Buyers who need a higher capacity than 39.3Wh or a different form factor for another laptop series should look at something else. This unit only addresses the specific part numbers listed in the compatibility data.

Tested unit with safety certifications

Each battery is tested for correct voltage, circuit protection, stable current and low self-discharge before shipping. It carries CE, FCC and RoHS certifications. No additional accessories, cables or software are included in the package.

Highlights

  • Ready to install in ThinkPad P14s Gen 3 and Gen 4 models
  • Direct replacement for OEM part numbers 5B10W51860 through 5B11M90024
  • 3 Wh capacity restores full mobile runtime
  • 3-cell lithium-ion design at 11.58 V matches original voltage
  • Tested for stable current, low self-discharge and CE, FCC, RoHS safety marks

Specifications

BrandGreenTech
Model5B10W51860, 5B10W51861, 5B10W51862, 5B11M90022, 5B11M90023, 5B11M90024, L21L3P71, L21M3P71, SB10W51961, SB10W51962, SB11M89823
Part Number5B10W51860, 5B10W51861, 5B10W51862, 5B11M90022, 5B11M90023, 5B11M90024, L21L3P71, L21M3P71, SB10W51961, SB10W51962, SB11M89823
ColorBlack
TypeBattery
CompatibilityLENOVO THINKPAD P14S GEN 3, P14S GEN 3 21J5, P14S GEN 3 21J6, P14S GEN 4, P14S GEN 4 21HF, P14S GEN 4 21HG, P14S GEN 4 21K5, P14S GEN 4 21K6, T14 GEN 3, T14 GEN 3 21CF, T14 GEN 3 21CG, T14 GEN 4, T14 GEN 4 21HD, T14 GEN 4 21HE, T14 GEN 4 21K3, T14 GEN 4 21K4
Battery Type3 Cell Lithium-Ion
Battery Voltage11.58V
Battery Capacity3400MAH

Questions about this item

Which ThinkPad models does the L21L3P71 battery fit?

The battery fits ThinkPad P14s Gen 3, P14s Gen 4, T14 Gen 3 and T14 Gen 4, including the 21J5, 21J6, 21HF, 21HG, 21K5, 21K6, 21CF, 21CG, 21HD, 21HE, 21K3 and 21K4 variants.

Will the 11.58V 3400mAh cell work in a laptop that originally used a different voltage pack?

This pack is built to the same 11.58V specification as the OEM batteries it replaces, so it operates correctly in every listed ThinkPad without voltage mismatch.

How can I confirm the 39.3Wh capacity is reporting correctly after installation?

Check the battery details in Lenovo Vantage or the BIOS power section; both should show 39.3Wh design capacity and 3-cell chemistry for the L21L3P71.

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