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Black rectangular lithium-ion laptop battery with label showing 50Wh 11.55V

Beisite

Beisite C31N1831 50Wh 11.55V laptop battery

SKU CH-M17F-0D744

50 Wh lithium-ion replacement battery for Asus ZenBook 14 UX433 series laptops

  • ColorBlack
  • TypeBattery
  • Compatibilityfor Zenbook 14 UX433FA UX433FN UX433FQ P3540FA P574FA P3548F
  • Battery TypeLithium-Ion
  • Battery Voltage11.55V
  • Battery Capacity50Wh
  • Replaces original C31N1831 part directly
  • 50Wh lithium-ion cell restores full runtime
  • 55V output matches factory specification exactly
  • Fits ZenBook 14 UX433 and P3540FA models
  • Brand-new condition with twelve-month supplier warranty

Compatible Zenbook 14 replacement

This 50Wh lithium-ion battery operates at 11.55V and replaces part numbers C31N1831, 3ICP5/70/81, 0B200-03330200, 0B200-03630000 and 0B200-03630200. It fits Zenbook 14 UX433FA, UX433FN, UX433FQ and P3540FA series laptops. The unit is supplied new with a 12-month warranty.

Thermal and power behaviour

Lithium-ion chemistry delivers stable voltage across the discharge curve without memory effect. The pack runs cool during typical office workloads and adds no audible noise because it has no moving parts. Power draw matches the original specification for the supported models.

Package contents and fit

The box contains one black battery ready for installation. No tools, screws or software are included. Buyers who need a higher-capacity pack or a different voltage should verify their original part number before ordering.

Highlights

  • Replaces original C31N1831 part directly
  • 50Wh lithium-ion cell restores full runtime
  • 55V output matches factory specification exactly
  • Fits ZenBook 14 UX433 and P3540FA models
  • Brand-new condition with twelve-month supplier warranty

Specifications

BrandC31N1831
ModelC31N1831
Part Number3ICP5/70/81
ColorBlack
TypeBattery
Compatibilityfor Zenbook 14 UX433FA UX433FN UX433FQ P3540FA P574FA P3548FA PE574FA PX574FA Series
Battery TypeLithium-Ion
Battery Voltage11.55V
Battery Capacity50Wh

Questions about this item

How do I install the C31N1831 battery in my Zenbook 14 UX433FA, and what step is often missed?

Power off the laptop, remove the bottom screws, disconnect the old battery connector before lifting it out, then connect the new C31N1831 connector firmly before reassembling; the step often missed is disconnecting the old battery first.

What maintenance will the 50Wh lithium-ion battery need over its life?

No scheduled maintenance is required; keep charge between 20 % and 80 % when possible, avoid deep discharges, store at roughly 50 % charge if unused for weeks, and replace the pack once runtime drops below your needs.

At what point does the 11.55V pack hit its limit during sustained heavy load?

The built-in protection circuit will cut output if voltage sags too low or temperature rises above the cell safety threshold, so sustained heavy loads are limited by thermal and voltage safeguards rather than a fixed wattage number.

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