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Black rectangular lithium-ion laptop battery with label showing 71Wh 15.36V

Beisite

Beisite L21C4PD8 L21D4PD8 L21L4PD8 L21M4PD8 71Wh laptop battery

SKU CH-C9N1-Y03HX

A 71Wh lithium-ion replacement battery for Lenovo ThinkBook 16 G4+ IAP and ARA series laptops

  • Battery typeLithium-Ion
  • Battery voltage rating15.36 V
  • Battery capacity71 Wh
  • Product colorBlack
  • Product typeBattery
  • Compatible withFor ThinkBook 16 G4+ IAP ARA Series
  • 71Wh capacity supports extended unplugged work sessions
  • 36V lithium-ion chemistry matches original power specifications
  • Compatible with ThinkBook 16 G4+ IAP and ARA series laptops
  • Replaces part numbers 41CP6/40/132 and 5B11F09737 among others
  • Brand-new condition ensures full rated capacity from first charge

Compatible replacement for ThinkBook 16 G4+ IAP

This 71Wh lithium-ion battery replaces part numbers L21C4PD8, L21D4PD8, L21L4PD8, L21M4PD8 and 41CP6/40/132. It fits the ThinkBook 16 G4+ IAP and ARA series as well as numerous 21CY sub-models. The pack ships as one of the four compatible variants depending on stock. It is not for laptops outside the listed ThinkBook 16 G4 families.

71Wh capacity at 15.36V for typical mobile workloads

The 71 watt-hour rating supplies a full day of office applications, web browsing and video playback on supported ThinkBook 16 G4 models. Runtime shortens under sustained heavy loads such as rendering or compiling. The cell chemistry is lithium-ion at a nominal 15.36 volts. Buyers needing higher capacity for extended off-grid use cannot be served by this pack.

Passive thermal design with no moving parts

The battery relies on the laptop chassis for heat dissipation and produces no audible noise. Power draw follows the system load and the internal battery management circuit. No active cooling or fan is present. Users requiring hot-swap capability or external charging docks are not supported by this internal pack.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $55.99
Pricier than about 86% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameL21C4PD8 L21D4PD8 L21L4PD8 L21M4PD8
Model nameL21C4PD8 L21D4PD8 L21L4PD8 L21M4PD8
Part number41CP6/40/132
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating15.36 V
Battery capacity71 Wh
Compatibility
Compatible withFor ThinkBook 16 G4+ IAP ARA Series

Questions about this item

Will the 15.36V 71Wh battery work in a ThinkBook 16 G4 IAP that originally used a 41CP6/40/132 pack?

Yes, the replacement part numbers list includes 41CP6/40/132 and the compatible models cover the ThinkBook 16 G4 IAP series.

How can I confirm the battery is recognised after installation?

The system BIOS and Lenovo Vantage will show the new pack at 15.36V and 71Wh with a healthy status and cycle count starting at zero.

Does the box contain any screws or tools for the ThinkBook 16 G4+ ARA bottom cover?

Only the battery itself is supplied; screws and opening tools are not included.

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