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Rectangular black lithium-ion battery pack with connector ribbon for ASUS ZenBook S13 UX392

KingSener

KingSener C31N1821 11.55V 50WH laptop battery for ASUS ZenBook S13 UX392

SKU CH-GFCJ-RE1MB MPN C31N1821

11.55V 50WH Li-ion replacement battery fits ASUS ZenBook S13 UX392 models

  • Battery Voltage11.55V
  • Battery Capacity50WH
  • 50 WH capacity extends unplugged runtime
  • 55 V Li-ion cells deliver stable power
  • Brand-new replacement matches original C31N1821 fit
  • Compatible with ZenBook S13 UX392 series
  • High-quality PCB prevents false capacity readings

Compatible replacement for ASUS ZenBook S13 UX392

This KingSener C31N1821 battery fits ASUS ZenBook S13 UX392, UX392FA and UX392FN models. It replaces the original 0B200-03210100 part with identical dimensions for direct installation. Buyers needing a different form factor or voltage should verify their original battery first.

Li-ion chemistry at 11.55V and 50WH capacity

The pack uses high-quality lithium-ion cells rated at 11.55V and 50WH. Stable output supports typical mobile workloads without excess heat. Supplier guidance recommends a full charge and discharge cycle two or three times at low current before regular use.

Sustained operation with proper care

Avoid leaving the charger connected continuously while the battery is in use, as this can degrade the cells. Store above 80% charge if removed for longer than a month, and keep the pack away from hot or humid environments to maintain its design capacity over time.

Highlights

  • 50 WH capacity extends unplugged runtime
  • 55 V Li-ion cells deliver stable power
  • Brand-new replacement matches original C31N1821 fit
  • Compatible with ZenBook S13 UX392 series
  • High-quality PCB prevents false capacity readings

Specifications

BrandKingSener
ModelC31N1821
Part NumberC31N1821 0B200-03210100
Battery Voltage11.55V
Battery Capacity50WH

Questions about this item

How do I install the KingSener C31N1821 battery in my ASUS ZenBook S13 UX392, and what step is often missed?

Power off the laptop, remove the bottom case screws, disconnect the old battery connector, fit the new C31N1821 unit, reconnect the cable, then fully charge and discharge it two to three times to calibrate the cells.

What maintenance will this 11.55V 50WH Li-ion battery need later?

If stored, charge it above 80 percent at least once a month; avoid leaving the AC adapter connected continuously while using the battery, and keep it away from hot or humid conditions.

What limit appears first under sustained heavy use of this replacement battery?

The 50 watt-hour capacity sets the runtime ceiling; continuous high load will deplete the charge faster and generate heat that can shorten overall cycle life.

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