Beisite B31N1635 42Wh 11.52V laptop battery
42Wh 11.52V lithium-ion replacement battery for Asus VivoBook 17 and Pro 17 models including X705 and N705 series
- Battery typeLithium-Ion
- Battery voltage rating11.52 V
- Battery capacity42 Wh
- Product colorBlack
- Product typeBattery
- Compatible withFor VivoBook 17 X705NA X705NC X705UA X705UN X705UV F705QA N7
- 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.
How it compares
Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.
- Price $33.99
- Pricier than about 60% of the 27,790 comparable items (median $30.99).
Specifications
| Product | |
|---|---|
| Brand name | B31N1635 |
| Model name | B31N1635 |
| Part number | 31CP5/57/81 |
| Product color | Black |
| Product type | Battery |
| Power | |
| Battery type | Lithium-Ion |
| Battery voltage rating | 11.52 V |
| Battery capacity | 42 Wh |
| Compatibility | |
| Compatible with | For VivoBook 17 X705NA X705NC X705UA X705UN X705UV F705QA N705UD N705UN N705UQ R702UA R702UA Series |
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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