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Black rectangular laptop battery with label showing 63Wh 11.64V 5413mAh

GreenTechLLC

GreenTechLLC L21M3P76 laptop battery 63Wh 11.64V 5413mAh

SKU CH-ZZ1G-GZ16B

Replacement 63Wh lithium-ion battery for Lenovo ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1 models

  • ColorBlack
  • TypeBattery
  • CompatibilityLENOVO THINKPAD L14 GEN 3, L14 GEN 3 21C1, L14 GEN 3 21C2, L
  • Battery Type3 Cell Lithium-Ion
  • Battery Voltage11.64V
  • Battery Capacity5413MAH
  • 63 Wh capacity supports longer sessions away from power
  • 64 V 5413 mAh 3-cell lithium-ion matches original specs
  • Direct replacement for Lenovo part numbers including 5B11M90010
  • Fits ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1 models
  • Tested for voltage, circuit protection and CE FCC RoHS safety

Replacement battery for ThinkPad L14 and L15 Gen 3

This new GreenTechLLC battery fits Lenovo ThinkPad L14 Gen 3 and L15 Gen 3 laptops. It replaces the original OEM packs listed under multiple part numbers including 5B11M90010 and SB10W52008. The unit is a 3-cell lithium-ion design rated at 63Wh. Buyers who need a battery for a different ThinkPad series cannot use this model.

Limits of the 3-cell 11.64V form factor

The pack delivers 11.64V and 5413mAh within the standard 3-cell footprint used by the compatible ThinkPad chassis. Runtime scales with the 63Wh capacity, so workloads that draw more power will deplete the charge faster. The physical dimensions match the original battery bay; no larger or higher-capacity cell arrangement fits without chassis modification. Users who require longer unplugged time than 63Wh provides must rely on external power.

63Wh capacity decides suitability

The single specification that determines fit is the 63Wh energy rating combined with the 11.64V voltage. Match these two figures against the label on your existing battery before ordering. If the original shows a different watt-hour value or voltage, this pack will not operate correctly. No other specification overrides this compatibility check.

Highlights

  • 63 Wh capacity supports longer sessions away from power
  • 64 V 5413 mAh 3-cell lithium-ion matches original specs
  • Direct replacement for Lenovo part numbers including 5B11M90010
  • Fits ThinkPad L14 Gen 3, L15 Gen 3 and C14 Gen 1 models
  • Tested for voltage, circuit protection and CE FCC RoHS safety

Specifications

BrandGreenTech
Model5B10W51907, 5B10W51908, 5B10W51909, 5B11H56345, 5B11H56346, 5B11H56347, 5B11M90009, 5B11M90010, 5B11M90011, 5B11M90012, 5B11M90013, 5B11M90014, L21B3P73, L21M3P76, SB10W52008, SB11H56246, SB11H56248
Part Number5B10W51907, 5B10W51908, 5B10W51909, 5B11H56345, 5B11H56346, 5B11H56347, 5B11M90009, 5B11M90010, 5B11M90011, 5B11M90012, 5B11M90013, 5B11M90014, L21B3P73, L21M3P76, SB10W52008, SB11H56246, SB11H56248
ColorBlack
TypeBattery
CompatibilityLENOVO THINKPAD L14 GEN 3, L14 GEN 3 21C1, L14 GEN 3 21C2, L14 GEN 3 21C5, L14 GEN 3 21C6, L15 GEN 3, L15 GEN 3 21C3, L15 GEN 3 21C4, L15 GEN 3 21C7, L15 GEN 3 21C8, C14 GEN 1, C14 GEN 1 21C9, C14 GEN 1 21CA
Battery Type3 Cell Lithium-Ion
Battery Voltage11.64V
Battery Capacity5413MAH

Questions about this item

Which part number matches my ThinkPad L14 Gen 3 21C1?

The GreenTech L21M3P76 replaces OEM numbers including 5B11M90010 and SB10W52008, covering all listed L14 Gen 3 sub-models.

What does the 63 Wh rating mean for daily runtime on my L15 Gen 3?

At 11.64 V and 5413 mAh the pack stores 63 Wh, typically delivering several hours of mixed office use on a full charge.

Does the 11.64 V output match the original battery connector on a C14 Gen 1 21CA?

Yes, the replacement is built to the same 11.64 V specification and fits the original battery bay on every listed C14 Gen 1 model.

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