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Black rectangular laptop battery with connector on one side

Beisite

Beisite C31N2105 70Wh 11.61V laptop battery

SKU CH-D607-M74HY

70 Wh lithium-ion replacement battery at 11.61 V for Asus Vivobook and Twin 15 models

  • ColorBlack
  • TypeBattery
  • Compatibilityfor Vivobook M3402QA K3402ZA M3402RA M5402RA / Vivobook S 14
  • Battery TypeLithium-Ion
  • Battery Voltage11.61V
  • Battery Capacity70Wh
  • 70 Wh capacity powers extended work sessions away from the mains
  • 61 V lithium-ion chemistry matches original Asus specifications exactly
  • Direct replacement for part numbers C31N2105, 0B200-04140000 and 31CP6/70/81
  • Fits Vivobook 14X, 15X, 16X, S 14X and Twin 15 series models
  • Brand-new black battery supplied with 12-month manufacturer warranty

70Wh 11.61V Lithium-Ion Replacement

This new Beisite battery replaces the C31N2105, 0B200-04140000 and 31CP6/70/81 part numbers. It delivers 70Wh capacity at 11.61V for compatible Asus Vivobook and Twin 15 models. The black Lithium-Ion unit is designed as a direct swap for the original pack.

Verify Your Exact Model Number First

Confirm the laptop model appears in the supported list before ordering; the list includes Vivobook 14X, 15X and 16X variants as well as S 14, S 14X, S 15, S 15X, S 16X and Twin 15 K3502Z series. Match the part number on your old battery to C31N2105, 0B200-04140000 or 31CP6/70/81. Physical connector layout and screw positions must also align with the original.

Restores Original Runtime for Failing Packs

The upgrade is worthwhile when the original battery no longer holds a useful charge or shows swelling. It restores the factory 70Wh capacity rather than increasing it, so buyers needing longer unplugged time than the original design provided will not gain extra hours. A 12-month warranty covers defects in materials and workmanship.

Highlights

  • 70 Wh capacity powers extended work sessions away from the mains
  • 61 V lithium-ion chemistry matches original Asus specifications exactly
  • Direct replacement for part numbers C31N2105, 0B200-04140000 and 31CP6/70/81
  • Fits Vivobook 14X, 15X, 16X, S 14X and Twin 15 series models
  • Brand-new black battery supplied with 12-month manufacturer warranty

Specifications

BrandC31N2105
ModelC31N2105
Part Number31CP6/70/81
ColorBlack
TypeBattery
Compatibilityfor Vivobook M3402QA K3402ZA M3402RA M5402RA / Vivobook S 14X S5402Z / Twin 15 K3502Z K3402Z S5600F S4600F Series
Battery TypeLithium-Ion
Battery Voltage11.61V
Battery Capacity70Wh

Questions about this item

Does the C31N2105 battery arrive as a single unit or do I need to buy screws or tools separately?

The battery ships as one complete 70Wh lithium-ion pack; no extra screws, cables or tools are included or required for installation.

My laptop is a Vivobook S 14X M3402QA — is this the correct 11.61V replacement?

Yes, the C31N2105 matches part numbers 0B200-04140000 and 31CP6/70/81 and is listed for the Vivobook S 14X M3402QA among many compatible models.

What does the 70Wh rating actually deliver in daily use on a Vivobook 14X?

A 70Wh cell at 11.61V typically provides several hours of mixed office work and video playback on a 14-inch Vivobook before needing a recharge.

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