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Black rectangular lithium-ion laptop battery, 42Wh 11.52V

Beisite

Beisite B31N1635 42Wh 11.52V laptop battery

SKU CH-EA5T-HYXHQ

42Wh 11.52V lithium-ion replacement battery for Asus VivoBook 17 and Pro 17 models including X705 and N705 series

  • ColorBlack
  • TypeBattery
  • Compatibilityfor VivoBook 17 X705NA X705NC X705UA X705UN X705UV F705QA N7
  • Battery TypeLithium-Ion
  • Battery Voltage11.52V
  • Battery Capacity42Wh
  • Replaces original B31N1635 and 31CP5/57/81 part numbers
  • 42 Wh lithium-ion cell delivers 11.52 V for compatible Asus models
  • Fits VivoBook 17 X705, N705 and A705 series laptops
  • Brand-new condition ensures full capacity from first charge
  • 12-month warranty period covers manufacturing defects

Replacement battery for Asus VivoBook 17

This 11.52V lithium-ion unit replaces part numbers B31N1635, 0B200-02540000 and 31CP5/57/81 across the X705, N705, A705 and R702 series. It targets owners whose original pack no longer holds a usable charge.

Black 42Wh cell in original form factor

The pack matches the factory voltage and capacity so it seats in the existing bay without adapters or cable changes. Lithium-ion chemistry keeps the weight and profile identical to the supplied battery.

Single battery in the package

Only the cell itself is included; no tools, screws or software arrive in the box. Buyers needing a charger, a second spare or a higher-capacity option must source those separately.

Highlights

  • Replaces original B31N1635 and 31CP5/57/81 part numbers
  • 42 Wh lithium-ion cell delivers 11.52 V for compatible Asus models
  • Fits VivoBook 17 X705, N705 and A705 series laptops
  • Brand-new condition ensures full capacity from first charge
  • 12-month warranty period covers manufacturing defects

Specifications

BrandB31N1635
ModelB31N1635
Part Number31CP5/57/81
ColorBlack
TypeBattery
Compatibilityfor VivoBook 17 X705NA X705NC X705UA X705UN X705UV F705QA N705UD N705UN N705UQ R702UA R702UA Series
Battery TypeLithium-Ion
Battery Voltage11.52V
Battery Capacity42Wh

Questions about this item

What voltage does the 11.52V B31N1635 battery deliver to the laptop?

The battery operates at 11.52V, matching the original specification for compatible VivoBook 17 models.

Which screw pattern and chassis cut-outs does the 31CP5/57/81 pack use?

It follows the exact form factor of the Asus 0B200-02540000 pack, so it fits the VivoBook 17 X705 and N705 series battery bay without modification.

What is the correct order to reconnect the ribbon cable when installing the 42Wh unit?

Insert the battery connector fully into the motherboard header before securing the retaining screws; reversing the steps can leave the cable loose.

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