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Rectangular black laptop battery with label showing part numbers and voltage

PowerWarehouse

PowerWarehouse L21D3PG2 laptop battery for ThinkPad L14 Gen 3 L15 Gen 3 57W

SKU CH-7771-B29HM

Replacement 57 W lithium-ion battery for ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1

  • CompatibilityLENOVO THINKPAD L14 GEN 3, L15 GEN 3, C14 GEN 1
  • Battery Type3 Cell Lithium-Ion
  • Compatible with ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1
  • Replaces OEM part numbers L21D3PG2, SB11F21945, 5B11F21946 and more
  • 52 V lithium-ion chemistry delivers stable power output
  • 4862 mAh capacity supports extended work sessions
  • Three-cell design keeps weight low while providing 57 W of energy

Replacement battery for ThinkPad L14 Gen 3

This 3-cell lithium-ion unit replaces the original pack in Lenovo ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1 laptops. It matches the OEM part numbers L21D3PG2, SB11F21945 and related codes. The battery is supplied new and ready to install.

Suitable for owners restoring runtime on supported

Users whose batteries no longer hold a useful charge will regain mobile operation. The pack is not compatible with ThinkPad models outside the L14 Gen 3, L15 Gen 3 or C14 Gen 1 lines. Buyers needing a higher-capacity or extended-life option should look elsewhere.

11.52 V, 4862 mAh capacity for everyday workloads

The 57 W rating delivers typical office and web-browsing runtime on a single charge. Demanding tasks such as sustained video rendering or heavy multitasking will deplete the pack more quickly. No larger-capacity version is offered in this form factor.

Highlights

  • Compatible with ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1
  • Replaces OEM part numbers L21D3PG2, SB11F21945, 5B11F21946 and more
  • 52 V lithium-ion chemistry delivers stable power output
  • 4862 mAh capacity supports extended work sessions
  • Three-cell design keeps weight low while providing 57 W of energy

Specifications

Part NumberL21D3PG2, SB11F21945, 5B11F21946, 5B11H56342, SB11H56243, 5B11H56343, L21C3PG2, SB11H56244
CompatibilityLENOVO THINKPAD L14 GEN 3, L15 GEN 3, C14 GEN 1
Battery Type3 Cell Lithium-Ion

Questions about this item

Which ThinkPad models accept the L21D3PG2 battery?

The L21D3PG2 fits ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1.

Can I keep my existing charger when I swap to this battery?

Yes, the original Lenovo charger continues to charge the 11.52 V pack normally.

How do I confirm the new cell is recognised after installation?

The battery icon should show 4862 mAh capacity and report 11.52 V in the OS power panel.

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