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Rectangular black Li-ion laptop battery, model C31N1806

KingSener

KingSener C31N1806 laptop battery 42Wh 3640mAh 11.55V

SKU CH-CE0S-09N5W MPN C31N1806

Replacement lithium-ion battery rated 42 Wh, 3640 mAh at 11.55 V for compatible Asus VivoBook models

  • Battery Voltage11.55V
  • Battery Capacity42Wh/3640mAh
  • 42 Wh capacity delivers extended runtime for daily tasks
  • 3640 mAh rating matches original design specifications
  • 55 V output ensures stable power delivery
  • Li-ion cells provide reliable energy density and cycle life
  • Compatible with multiple Asus VivoBook models for direct replacement

Replacement Battery for Asus VivoBook Series

The KingSener C31N1806 is a direct replacement battery designed for compatible Asus VivoBook models including the S330F, S330UA, X330FA, X330FL, X330UA, K330FA and R330UN. It restores mobility to laptops suffering from degraded original cells, providing a fresh power source for daily work and study.

Thermal and Power Behaviour in Normal Use

The Li-ion pack delivers a rated capacity of 42Wh at 11.55V with a 3640mAh charge rating. High-quality cells and PCB are specified to supply stable capacity and longer running time without false capacity claims. The supplier advises a full charge and discharge cycle repeated two or three times initially and warns against leaving the adapter connected for extended periods while the battery is in use.

Fit and Build Integration

The unit matches the original battery dimensions exactly, requiring no case modifications or adapter brackets during installation. It is intended solely for the listed VivoBook part numbers; owners of other Asus series or different brands should verify their original battery model and appearance before purchase. The pack ships ready to install with no additional cables or mounting hardware needed.

Highlights

  • 42 Wh capacity delivers extended runtime for daily tasks
  • 3640 mAh rating matches original design specifications
  • 55 V output ensures stable power delivery
  • Li-ion cells provide reliable energy density and cycle life
  • Compatible with multiple Asus VivoBook models for direct replacement

Specifications

BrandKingSener
ModelC31N1806
Part NumberC31N1806
3ICP5/58/57
Battery Voltage11.55V
Battery Capacity42Wh/3640mAh

Questions about this item

How do I install the KingSener C31N1806 battery in my Asus VivoBook, and what step do people often miss?

Power off the laptop, remove the bottom screws, disconnect the old battery connector before lifting it out, then connect the new C31N1806 battery before reassembling; the step often missed is disconnecting the old battery first.

What maintenance will the C31N1806 battery need later to keep its 42Wh capacity?

Perform a full charge and discharge cycle two or three times on first use, avoid leaving the adapter connected constantly, store above 80% charge if unused for a month, and keep it away from heat and humidity.

What limit appears first on the 3ICP5/58/57 cells during sustained heavy use?

The 11.55V Li-ion cells will hit thermal limits before the 3640mAh capacity is fully drained, causing the battery to throttle or shut down to protect itself under continuous high load.

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