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Rectangular black lithium-ion laptop battery with connector strip

KingSener

KingSener B31N1915 C31N1915 11.55V 42WH laptop battery

SKU CH-TJZ5-MKE2Q MPN B31N1915

11.55 V, 42 Wh Li-ion replacement battery for Asus ExpertBook B1400 and B1500 series laptops

  • Battery Voltage11.55V
  • Battery Capacity42WH/3640mAh
  • Delivers reliable power with 11.55V and 42WH capacity
  • High-quality Li-ion cells ensure stable performance and longer runtime
  • Brand new replacement battery with 100% compatibility for Asus ExpertBook B1 B1400 B1500 series
  • Exact fit matching original battery size for hassle-free installation
  • Supports up to 3640mAh capacity for extended mobile use

Battery for Asus ExpertBook B1 series

This KingSener replacement battery fits the Asus ExpertBook B1 B1400 and B1500 series. It is built with Li-ion cells rated at 11.55V and 42WH. The unit arrives new and matches the original B31N1915 part number. It is intended for owners of those specific models who need a fresh power source.

Fits inside the existing chassis

The battery uses the same physical dimensions and connector layout as the factory pack, so it slides into the laptop without adapters or case modifications. No extra cabling or mounting hardware is required. It simply replaces the depleted cell and restores mobile operation. It is not suitable for laptops outside the listed ExpertBook B1 range.

42WH capacity for daily workloads

A full charge stores 42 watt-hours, or 3640 mAh, which supports typical office tasks and web browsing for several hours. Runtime falls as screen brightness, background apps or heavy CPU loads increase. The pack will not meet the needs of users who require all-day power without access to a charger.

Highlights

  • Delivers reliable power with 11.55V and 42WH capacity
  • High-quality Li-ion cells ensure stable performance and longer runtime
  • Brand new replacement battery with 100% compatibility for Asus ExpertBook B1 B1400 B1500 series
  • Exact fit matching original battery size for hassle-free installation
  • Supports up to 3640mAh capacity for extended mobile use

Specifications

BrandKingSener
ModelB31N1915
Part NumberB31N1915 C31N1915 0B200-03760000
Battery Voltage11.55V
Battery Capacity42WH/3640mAh

Questions about this item

How many watt-hours does the 11.55V 42WH pack deliver before voltage drops under sustained load?

The battery is rated at 42 watt-hours, matching the original design capacity for the ExpertBook B1 series.

Does the Li-ion cell run hot or draw extra power during all-day use in an Asus ExpertBook B1400 or B1500?

High-quality cells and PCB maintain stable capacity and normal operating temperature without excess heat or power draw.

Which original battery part numbers must match for this KingSener unit to fit my ExpertBook?

Compatible with part numbers B31N1915, C31N1915 and 0B200-03760000 used in Asus ExpertBook B1 B1400 B1500 series.

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