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Black rectangular Li-ion laptop battery with connector, 52.5Wh 15.44V

KingSener

KingSener L21L4P71 laptop battery 52.5Wh 15.44V

SKU CH-JBSA-K5NA2 MPN L21L4P71

Replacement Li-ion battery rated 52.5 Wh at 15.44 V for compatible Lenovo ThinkPad models

  • Battery Voltage15.44V
  • Battery Capacity3400mAh/52.5Wh
  • 5 Wh capacity delivers extended runtime for Lenovo ThinkPad T14 Gen 3
  • 44 V output matches original battery specifications for stable performance
  • 3400 mAh lithium-ion cells provide reliable power without false capacity claims
  • Compatible with multiple Lenovo part numbers including L21C4P71 and SB10W51967
  • Brand-new replacement battery fits exactly like the original unit

Genuine replacement for ThinkPad T14 P14s Gen 3 2022

The KingSener L21L4P71 is a 52.5Wh 15.44V lithium-ion battery built for Lenovo ThinkPad T14 and P14s Gen 3 2022 models. It matches the original 3400mAh design capacity using high-quality cells and a black finish. This unit suits owners whose factory pack no longer holds a useful charge.

Upgrades worn or swollen original packs

It replaces Lenovo part numbers including L21C4P71 L21D4P71 L21M4P71 L21M4P72 SB10W51967 and related codes. The jump is worth it when runtime has dropped below half of new or the chassis shows swelling. Buyers who need a higher-capacity alternative or a different voltage should look elsewhere.

Direct fit with no case modification

The battery shares the exact dimensions of the original so installation only requires removing the bottom cover and swapping the connector. Common issues arise if the pack is stored below 80% charge for over a month or left plugged in continuously at full charge. Follow the break-in cycles of two to three full discharges for best calibration.

Highlights

  • 5 Wh capacity delivers extended runtime for Lenovo ThinkPad T14 Gen 3
  • 44 V output matches original battery specifications for stable performance
  • 3400 mAh lithium-ion cells provide reliable power without false capacity claims
  • Compatible with multiple Lenovo part numbers including L21C4P71 and SB10W51967
  • Brand-new replacement battery fits exactly like the original unit

Specifications

BrandKingSener
ModelL21L4P71
Part NumberL21L4P71
SB10W51964
5B10W51863
4ICP6/66/56
5B10W51864
5B10W51866
5B10W51867
L21C4P71
L21D4P71
L21M4P71
SB10W51965
SB10W51967
SB10W51968
SB10W5196B
L21M3P71
L21C3P71
L21L4371
L21D3P71
Battery Voltage15.44V
Battery Capacity3400mAh/52.5Wh

Questions about this item

Will the L21L4P71 battery fit my ThinkPad T14 Gen 3 2022 without any size difference?

It is built to the same dimensions as the original battery so it slides into the existing compartment with no modification needed.

What is the installation step that users most often skip when fitting this 15.44 V 52.5 Wh pack?

After seating the battery, fully charge and discharge it two or three times from low current to calibrate the cells before regular use.

How often should I top up the 3400 mAh cells if the laptop stays unused for weeks?

Charge above 80 % at least once a month while the battery is removed to prevent deep discharge damage.

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