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Main image of L21L4P71 SB10W51964 Laptop Battery Replacement for Lenovo ThinkPad T14 Gen 3/ P14s Gen 3 /ThinkPad T14 Gen 4 / P14s Gen 4 Series Notebook L21M4P72 L21C4P71 L21M4P71 L21D4P71 L21M3P71 L21L3P71

Alt view image 2 of 5 - L21L4P71 SB10W51964 Laptop Battery Replacement for Lenovo ThinkPad T14 Gen 3/ P14s Gen 3 /ThinkPad T14 Gen 4 / P14s Gen 4 Series Notebook L21M4P72 L21C4P71 L21M4P71 L21D4P71 L21M3P71 L21L3P71

Alt view image 3 of 5 - L21L4P71 SB10W51964 Laptop Battery Replacement for Lenovo ThinkPad T14 Gen 3/ P14s Gen 3 /ThinkPad T14 Gen 4 / P14s Gen 4 Series Notebook L21M4P72 L21C4P71 L21M4P71 L21D4P71 L21M3P71 L21L3P71

Alt view image 4 of 5 - L21L4P71 SB10W51964 Laptop Battery Replacement for Lenovo ThinkPad T14 Gen 3/ P14s Gen 3 /ThinkPad T14 Gen 4 / P14s Gen 4 Series Notebook L21M4P72 L21C4P71 L21M4P71 L21D4P71 L21M3P71 L21L3P71

Alt view image 5 of 5 - L21L4P71 SB10W51964 Laptop Battery Replacement for Lenovo ThinkPad T14 Gen 3/ P14s Gen 3 /ThinkPad T14 Gen 4 / P14s Gen 4 Series Notebook L21M4P72 L21C4P71 L21M4P71 L21D4P71 L21M3P71 L21L3P71

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L21L4P71 SB10W51964 Laptop Battery Replacement for Lenovo ThinkPad T14 Gen 3/ P14s Gen 3 /ThinkPad T14 Gen 4 / P14s Gen 4 Series Notebook L21M4P72 L21C4P71 L21M4P71 L21D4P71 L21M3P71 L21L3P71

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Battery typeLi-ion; Voltage: 15.44V; Capacity: 52.5Wh 3400mAh .
Compatible Part NumberL21L4P71 SB10W51964 5B10W51863 SB11M89826 5B11M90025 L21M4P72 SB10W51966 5B10W51865 SB11M89828 5B11M90027 L21D4P71 SB10W51968 5B10W51867 SB11M89830 5B11M90029 L21C4P71 SB10W51967 5B10W51866 SB11M89829 5B11M90028 L21M4P71 SB10W51965 5B10W51864 SB11M89827 5B11M90026 5B10W51899 5B10W51900 5B10W51901 5B10W51902 5B10W51905
Replacement For LaptopFor Lenovo ThinkPad T14 Gen 3 (Type 21AH, 21AJ, 21CF, 21CG) series; for Lenovo ThinkPad T14 Gen 4 (Type 21HD, 21HE, 21K3, 21K4) series; for Lenovo ThinkPad P14s Gen 3 (Type 21AK, 21AL, 21J5, 21J6) series; for Lenovo ThinkPad P14s Gen 4 (Type 21HF, 21HG, 21K5, 21K6) series
Use SkillsIf the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected.Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to wake up the new battery.
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Overview

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Battery Specification:

Condition:Brand new
Color : Black
Battery Type: Li-ion
Model : L21L4P71
Voltage15.44V
Capacity: 52.5Wh 3400mAh

Replace Part Number:

L21M3P71 SB10W51962 5B10W51861 SB11M89824 5B11M90023
L21L3P71 SB10W51961 5B10W51860 SB11M89823 5B11M90022
L21C3P71 SB10W51963 5B10W51862 SB11M89825 5B11M90024
L21M4P72 SB10W51966 5B10W51865 SB11M89828 5B11M90027 SB10W52002 5B10W51901
L21L4P71 SB10W51964 5B10W51863 SB11M89826 5B11M90025 SB10W52000 5B10W51899
L21M4P71 SB10W51965 5B10W51864 SB11M89827 5B11M90026 SB10W52001 5B10W51900
L21C4P71 SB10W51967 5B10W51866 SB11M89829 5B11M90028 SB10W52003 5B10W51902
L21D4P71 SB10W51968 5B10W51867 SB11M89830 5B11M90029 SB10W52006 5B10W51905

Compatible Models (use "Ctrl+F" to find your model quickly)

For Lenovo ThinkPad T14 Gen 4 (Type 21HD, 21HE, 21K3, 21K4) seriess
For Lenovo ThinkPad T14 Gen 4 (Type 21HD, 21HE, 21K3, 21K4) series
For Lenovo ThinkPad P14s Gen 3 (Type 21AK, 21AL, 21J5, 21J6) series
For Lenovo ThinkPad P14s Gen 4 (Type 21HF, 21HG, 21K5, 21K6) series

Provide Services:
12 months Warranty
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Additional Information
First Listed on Newegg	August 01, 2026

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Return for refund within: 30 days
Return for replacement within: 30 days
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Item#: 9SIC85ZM3E6891