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Black rectangular laptop battery with label showing 47Wh 7.7V 6150mAh

E-buy

E-buy 47Wh C21N1833 laptop battery for Asus Zenbook UX 14 ux431fa ux431

SKU CH-50ZS-K6RGD

47 Wh lithium-polymer replacement battery rated at 7.7 V fits Asus Zenbook UX 14 models including UX431FA and UX431FL

  • TypeBattery
  • Battery TypeLaptop Batteries
  • Li-polymer chemistry keeps weight low
  • 47Wh capacity supports longer sessions
  • 7V rating matches original spec
  • 6150mAh cell count delivers stable output
  • Replaces C21N1833 for compatible Zenbook models

Direct replacement battery

The E-buy 47Wh C21N1833 is a new lithium-polymer battery built for the Asus Zenbook UX 14 series including the ux431fa and ux431fl models. It restores original runtime for owners of compatible ultraportables who need a fresh power source.

7.7V 6150mAh capacity limit

The pack delivers 7.7 volts and 6150 milliampere-hours, matching the factory specification for the listed Zenbook chassis. This capacity ceiling means the battery cannot exceed the runtime designed into the original platform, so users with heavier workloads will still hit the same wall.

Replaces C21N1833 part number

It swaps directly for the C21N1833 module used in the S4500F, U4500F, BX431FA, UX431FL and X431FLC families. The upgrade is worthwhile when the original cell no longer holds a useful charge; it is not a higher-capacity alternative for users who want longer unplugged time.

Highlights

  • Li-polymer chemistry keeps weight low
  • 47Wh capacity supports longer sessions
  • 7V rating matches original spec
  • 6150mAh cell count delivers stable output
  • Replaces C21N1833 for compatible Zenbook models

Specifications

TypeBattery
Battery TypeLaptop Batteries

Questions about this item

Which capacity matches the original 47Wh C21N1833 part for my Zenbook UX 14?

This replacement is rated at 47Wh and 6150mAh at 7.7V, matching the original C21N1833 specification for compatible UX431 models.

What runtime can I expect from the 47Wh rating in daily use on a UX431?

At 47Wh the pack stores the same energy as the factory unit; actual hours depend on screen brightness, workload and power settings of your specific UX431 configuration.

Does the 7.7V output work with the UX431 charging circuit without modification?

Yes — the 7.7V nominal voltage matches the original C21N1833 design, so the UX431 charging controller recognises and manages the pack normally.

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