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Rectangular black laptop battery with label showing model L21M3PG1

PowerWarehouse

PowerWarehouse L21M3PG1 laptop battery 11.25v 3735mah for ThinkPad L14 Gen 3 L15 Gen 3 C14 Gen 1

SKU CH-X1HE-CVZ79

A three-cell lithium-ion replacement battery delivering 11.25 V and 3735 mAh for compatible ThinkPad L14, L15 and C14 models

  • CompatibilityLENOVO THINKPAD L14 GEN 3, L15 GEN 3, C14 GEN 1
  • Battery Type3 Cell Lithium-Ion
  • Direct replacement for ThinkPad L14 Gen 3 and L15 Gen 3
  • 25 V 3735 mAh three-cell lithium-ion matches original specs
  • Replaces OEM part numbers L21M3PG1 SB11F21949 5B11F21942 L21L3PG1 SB11F21950 5B11F21940 5B11F21943 L21C3PG1
  • Fits C14 Gen 1 models alongside L-series laptops
  • New condition battery ready to install

Replacement battery for ThinkPad L14 Gen 3

This new lithium-ion pack replaces the original cell in Lenovo ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1 laptops. It delivers 11.25 volts and 3735 milliampere-hours of capacity across three cells. The part matches OEM numbers L21M3PG1, SB11F21949, 5B11F21942 and several related codes.

Installation fit and system impact

The battery slots into the existing compartment without extra cables or adapters, restoring mobile power to the supported models. Because it uses the factory form factor, it does not occupy additional space or block other components. No configuration changes are required once the pack is seated and the system recognises it.

Who this suits and who should look elsewhere

Owners of the listed ThinkPad models needing a direct replacement will find the correct voltage and connector here. Buyers with different laptop series, higher-capacity requirements or alternative cell counts should look elsewhere.

Highlights

  • Direct replacement for ThinkPad L14 Gen 3 and L15 Gen 3
  • 25 V 3735 mAh three-cell lithium-ion matches original specs
  • Replaces OEM part numbers L21M3PG1 SB11F21949 5B11F21942 L21L3PG1 SB11F21950 5B11F21940 5B11F21943 L21C3PG1
  • Fits C14 Gen 1 models alongside L-series laptops
  • New condition battery ready to install

Specifications

Part NumberL21M3PG1, SB11F21949, 5B11F21942, L21L3PG1, SB11F21950, 5B11F21940, 5B11F21943, L21C3PG1
CompatibilityLENOVO THINKPAD L14 GEN 3, L15 GEN 3, C14 GEN 1
Battery Type3 Cell Lithium-Ion

Questions about this item

What is the capacity limit of the 3-cell 3735mAh battery during sustained use?

The 3-cell lithium-ion pack is rated at 3735mAh and 11.25v, giving roughly 42Wh of energy for extended workloads.

Does the replacement battery run hotter or draw more power than the original?

It matches the OEM 11.25v specification, so heat and power draw stay consistent with the factory battery.

Which ThinkPad models must I already own for this L21M3PG1 battery to fit?

It fits Lenovo ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1 laptops.

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