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Rectangular black laptop battery with connector and label

PowerWarehouse

PowerWarehouse L21L3P71 laptop battery for ThinkPad P14s Gen 3, P14s Gen 4, T14 Gen 3, T14 Gen 4

SKU CH-VAB3-R58HP

Three-cell lithium-ion replacement battery delivering 11.58 V and 3400 mAh for compatible ThinkPad models

  • Battery type3 Cell Lithium-Ion
  • Compatible withLENOVO THINKPAD P14S GEN 3, P14S GEN 4, T14 GEN 3, T14 GEN 4
  • 3400 mAh capacity keeps ThinkPad P14s and T14 running longer
  • 58 V three-cell lithium-ion matches original voltage and chemistry
  • Replaces six OEM part numbers including L21L3P71 and SB10W51961
  • Fits ThinkPad P14s Gen 3, P14s Gen 4, T14 Gen 3, T14 Gen 4
  • Brand-new PowerWarehouse unit backed by a 12-month warranty

PowerWarehouse L21L3P71 replacement battery

This PowerWarehouse L21L3P71 battery replaces the original pack in Lenovo ThinkPad P14s Gen 3, P14s Gen 4, T14 Gen 3 and T14 Gen 4 laptops. It uses a three-cell lithium-ion design rated at 11.58V and 3400mAh. The part matches OEM numbers L21L3P71, L21M3P71, SB10W51961, SB10W51962, 5B10W51860 and 5B10W51861.

Installation notes and common issues

Installation requires opening the laptop chassis and disconnecting the internal connector. Most ThinkPad models in this series use internal batteries secured with screws and a cable. Take care not to pinch the ribbon cable when refitting the base cover. A common issue is forgetting to disable the built-in battery in BIOS before starting the swap.

Who this suits and who should look elsewhere

This unit suits owners of the listed ThinkPad models who need a direct voltage and capacity match. It is not for users whose laptop requires a different cell count or voltage. Buyers with other ThinkPad series or non-Lenovo machines should verify their exact part number before ordering.

How it compares

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

Price $56.99
Pricier than about 87% of the 27,790 comparable items (median $30.99).

Specifications

Product
Part numberL21L3P71, SB10W51961, 5B10W51860, L21M3P71, SB10W51962, 5B10W51861
Power
Battery type3 Cell Lithium-Ion
Compatibility
Compatible withLENOVO THINKPAD P14S GEN 3, P14S GEN 4, T14 GEN 3, T14 GEN 4

Questions about this item

How do I verify the 11.58V 3400mAh battery is working after installation?

The laptop should power on without the charger, show the correct 11.58V voltage in system diagnostics, and hold a charge consistent with the 3400mAh rating during normal use.

What is included in the box and do I need to buy any tools separately?

The box contains the 3-cell lithium-ion replacement battery only; no screwdrivers, opening tools, or additional cables are supplied.

Which OEM part number should I match — L21L3P71, L21M3P71, SB10W51961, 5B10W51860, SB10W51962, or 5B10W51861?

All six numbers — L21L3P71, L21M3P71, SB10W51961, 5B10W51860, SB10W51962, and 5B10W51861 — refer to the same 11.58V 3400mAh battery; match any one listed on your original pack.

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