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Rectangular black lithium-ion laptop battery with connector strip

Beisite

Beisite L20C4P73 L20M4P73 L20D4P73 L20L4P73 laptop battery

SKU CH-CJXT-S7SAA

Replacement lithium-ion battery delivering 15.36V and 54.7Wh for Lenovo ThinkPad X13 Gen 2 models

  • ColorBlack
  • TypeBattery
  • Compatibilityfor ThinkPad X13 Gen 2 20XH 20XJ Series
  • Battery TypeLithium-Ion
  • Battery Voltage15.36V
  • Battery Capacity54.7Wh
  • Delivers 54.7Wh capacity for extended runtime
  • 36V lithium-ion chemistry matches original spec
  • Replaces multiple Lenovo part numbers including SB10W51919
  • Fits ThinkPad X13 Gen 2 20XH and 20XJ series
  • Brand-new condition ensures full rated performance

Compatible replacement for ThinkPad X13 Gen 2

This new lithium-ion battery replaces part numbers L20C4P73, L20D4P73, L20L4P73 and L20M4P73 in Lenovo ThinkPad X13 Gen 2 models. It delivers 54.7Wh at 15.36V and comes in black. The supplier ships whichever compatible variant is in stock.

Voltage variation across part numbers

The four listed part numbers operate at different voltages yet are mutually compatible, so the unit you receive may differ from the one originally installed. This does not affect fit or function in the supported laptops.

Verify your exact model before ordering

Check that your ThinkPad X13 Gen 2 appears in the supported model list such as 20SX001UUS, 20T3S31Y00 or 20W8001YAU. This battery is not for other ThinkPad series or non-Lenovo laptops.

Highlights

  • Delivers 54.7Wh capacity for extended runtime
  • 36V lithium-ion chemistry matches original spec
  • Replaces multiple Lenovo part numbers including SB10W51919
  • Fits ThinkPad X13 Gen 2 20XH and 20XJ series
  • Brand-new condition ensures full rated performance

Specifications

BrandL20C4P73 L20M4P73 L20D4P73 L20L4P73
ModelL20C4P73 L20M4P73 L20D4P73 L20L4P73
Part Number41CP6/62/65
ColorBlack
TypeBattery
Compatibilityfor ThinkPad X13 Gen 2 20XH 20XJ Series
Battery TypeLithium-Ion
Battery Voltage15.36V
Battery Capacity54.7Wh

Questions about this item

How many charge cycles before the 54.7Wh lithium-ion battery needs replacing?

Lithium-ion cells typically retain usable capacity for several hundred full cycles; actual lifespan depends on depth of discharge and temperature.

What limits runtime first during a continuous workload on this 15.36V pack?

The 54.7Wh capacity sets the energy ceiling, so sustained high draw depletes the pack before voltage sag becomes the bottleneck.

Does the battery get hot or noisy when the ThinkPad X13 Gen 2 runs all day?

The pack is passive with no fan; it warms under load but stays within normal lithium-ion operating temperatures.

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