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Black rectangular lithium-ion laptop battery with connector strip

Beisite

Beisite C31N1811 50Wh 11.55V laptop battery

SKU CH-5ZCA-VEQKC

A 50Wh 11.55V lithium-ion replacement battery for Asus ZenBook 14 UX433 series laptops

  • Battery typeLithium-Ion
  • Battery voltage rating11.55 V
  • Battery capacity50 Wh
  • Product colorBlack
  • Product typeBattery
  • Compatible withFor ZenBook 14 UX433 UX433F UX433FA UX433FN UX433FQ U4300 U4
  • 50 Wh capacity powers the ZenBook 14 through a full workday
  • 55 V lithium-ion chemistry matches the original battery specification
  • Replaces part numbers C31N1811, C31PnJ5, C31PoJ5, 0B200-03080000, 3ICP5/70/81 for direct fit
  • Compatible with UX433, UX433F, UX433FA, UX433FN, UX433FQ and U4300 series models
  • Brand-new condition ensures full rated capacity from first charge

Replacement battery for ZenBook 14 UX433 series

This 50Wh lithium-ion unit operates at 11.55V and matches the original C31N1811 form factor. It is built for owners of Asus ZenBook 14 models including UX433, UX433F, UX433FA, UX433FN, UX433FQ, U4300, U433FN, U4300FN, U4300F, U4300FA, BX433F and RX433FN series laptops who need a direct swap for a depleted pack.

Supplied part numbers replace multiple OEM codes

The battery ships with identifiers C31N1811, C31PnJ5, C31PoJ5, 0B200-03080000 and 3ICP5/70/81, covering the same references used across the listed ZenBook 14 sub-models. No additional cables, tools or software are included in the package.

Internal laptop connector limits external use

The pack connects only through the notebook's proprietary internal header, so it cannot serve as a portable power bank or be charged outside the host machine. Buyers who need a removable power source for other devices should look at USB-C power delivery alternatives.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $35.99
Pricier than about 64% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameC31N1811
Model nameC31N1811
Part number3ICP5/70/81
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.55 V
Battery capacity50 Wh
Compatibility
Compatible withFor ZenBook 14 UX433 UX433F UX433FA UX433FN UX433FQ U4300 U433FN U4300FN U4300F U4300FA BX433F RX433FN Series

Questions about this item

When will the 50Wh lithium-ion cell need replacing?

Expect two to three years of daily charging before capacity drops below useful levels; the 12-month warranty covers early failure.

What limits runtime during a full-day workload?

The 50Wh rating sets the energy ceiling; intensive tasks drain it faster than light browsing.

Does the 11.55V pack run hot or noisy under continuous use?

No moving parts mean silent operation; normal warmth appears under load but stays within safe lithium-ion limits.

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