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Black rectangular lithium-ion laptop battery with label showing 42Wh 11.55V

Beisite

Beisite C31N1911 B31N1911 42Wh 11.55V laptop battery

SKU CH-AFBA-XNXSJ

A 42Wh lithium-ion replacement battery at 11.55V for Asus VivoBook Flip 14 and VivoBook 14 models

  • ColorBlack
  • TypeBattery
  • Compatibilityfor VivoBook Flip 14 TP470EA TP470EZ X421DA TP420IA TP470EA
  • Battery TypeLithium-Ion
  • Battery Voltage11.55V
  • Battery Capacity42Wh/3640mAh
  • Reliable power with 42Wh lithium-ion capacity
  • Direct replacement for B31N1911 and C31N1911 part numbers
  • Fits Asus VivoBook Flip 14 and VivoBook 14 models
  • Stable 11.55V output matches original specification
  • Brand-new condition with 12-month coverage

Replacement battery for Asus VivoBook Flip 14

This 42Wh lithium-ion unit replaces part numbers B31N1911, C31N1911 and 0B200-03580000 in compatible Asus VivoBook Flip 14 and VivoBook 14 models. It supplies 11.55V at 3640mAh and is finished in black. Buyers who need a different voltage or capacity cannot use this battery.

Straightforward internal swap with common tools

The battery fits the listed TM420IA, M413DA, F413 and X421 series chassis without modification. Disconnect the old pack, connect the new one and secure the screws. Builders who lack a compatible connector or who must service a sealed unibody design will find installation impossible.

Steady output during extended sessions

The 42Wh capacity delivers consistent 11.55V power through long work or media playback periods without the voltage sag seen in smaller packs. Cells are rated for hundreds of full charge cycles. Users who demand all-day runtime on a single charge may find the capacity insufficient.

Highlights

  • Reliable power with 42Wh lithium-ion capacity
  • Direct replacement for B31N1911 and C31N1911 part numbers
  • Fits Asus VivoBook Flip 14 and VivoBook 14 models
  • Stable 11.55V output matches original specification
  • Brand-new condition with 12-month coverage

Specifications

BrandC31N1911 B31N1911
ModelC31N1911 B31N1911
Part Number0B200-03580000
ColorBlack
TypeBattery
Compatibilityfor VivoBook Flip 14 TP470EA TP470EZ X421DA TP420IA TP470EA TM420IA TP470EZ X421X421EA M413DA F413 Series
Battery TypeLithium-Ion
Battery Voltage11.55V
Battery Capacity42Wh/3640mAh

Questions about this item

How can I verify the 42Wh battery is charging correctly after installation?

After fitting the battery, power on the laptop and confirm the OS reports a charge level that increases while connected to the AC adapter; the battery indicator should show the 11.55V design voltage and capacity near 3640mAh when fully charged.

What comes in the box and do I need any extra parts to install it?

The package contains the replacement lithium-ion battery only; no tools, screws or cables are included, so have a suitable screwdriver ready for the laptop's bottom case.

My model is a VivoBook Flip 14 TM420IA-EC071T — is this the correct 42Wh version?

Yes, the TM420IA-EC071T appears in the supported model list, and the battery matches the required 11.55V 42Wh specification and part numbers B31N1911, C31N1911 and 0B200-03580000.

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