We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular lithium-ion laptop battery with label showing 42Wh 11.52V

Beisite

Beisite B31N1842 42Wh 11.52V laptop battery

SKU CH-0TXP-FH2VN

A 42 Wh lithium-ion battery at 11.52 V replaces part numbers B31N1842 and 0B200-03440000 for Asus VivoBook S15 S531FA, S531FL, X531FL and related models

  • ColorBlack
  • TypeBattery
  • Compatibilityfor VivoBook S15 S531FA S531FL X531FL K531FA V531FA V531FL K
  • Battery TypeLithium-Ion
  • Battery Voltage11.52V
  • Battery Capacity42Wh
  • 42 Wh capacity powers extended work sessions
  • 52 V lithium-ion chemistry matches original specifications
  • Replaces part numbers B31N1842, 0B200-03440000, 3ICP5/57/80
  • Compatible with VivoBook S15 S531FA, S531FL, X531FL, K531FA, V531FA series
  • Black finish fits seamlessly into supported laptop chassis

Replacement Battery for VivoBook S15 Series

This 42Wh lithium-ion cell replaces part numbers B31N1842 and 0B200-03440000 in compatible Asus VivoBook S15, S531, X531, K531, V531, S5500, F513, M513, K513, S513 and X513 models. It supplies 11.52V to restore original runtime for owners whose factory pack no longer holds a charge.

Black Lithium-Ion Pack with Direct-Fit Connectors

The black housing matches the OEM colour and slides into the internal battery bay without adapters or cable modifications. Voltage and capacity align with the 11.52V 42Wh specification so the laptop’s power management recognises the cell immediately and reports accurate remaining time.

12-Month Warranty Covers Early Capacity Loss

A one-year warranty protects against premature degradation or cell imbalance that would shorten daily run time. Buyers needing higher capacity than 42Wh or a different voltage for other Asus series should verify their exact part number before ordering.

Highlights

  • 42 Wh capacity powers extended work sessions
  • 52 V lithium-ion chemistry matches original specifications
  • Replaces part numbers B31N1842, 0B200-03440000, 3ICP5/57/80
  • Compatible with VivoBook S15 S531FA, S531FL, X531FL, K531FA, V531FA series
  • Black finish fits seamlessly into supported laptop chassis

Specifications

BrandB31N1842
ModelB31N1842
Part Number0B200-03440000
ColorBlack
TypeBattery
Compatibilityfor VivoBook S15 S531FA S531FL X531FL K531FA V531FA V531FL K531FA K531FL S5500F F513 M513 K513 S513 X513 S15 S531F Series
Battery TypeLithium-Ion
Battery Voltage11.52V
Battery Capacity42Wh

Questions about this item

What voltage does the B31N1842 battery deliver and what capacity does that provide?

It supplies 11.52 V with a 42 Wh rating for compatible VivoBook models.

Does this pack match the chassis dimensions of the original Asus battery?

It replaces part numbers B31N1842, 0B200-03440000 and 3ICP5/57/80, so it fits the same bay.

What is the first step when installing the battery and what do people often skip?

Power off the laptop and disconnect the AC adapter before removing the bottom case screws.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.