Beisite B31N1842 42Wh 11.52V laptop battery for Asus VivoBook S15 S531 series
A 42Wh 11.52V lithium-ion replacement battery for Asus VivoBook S15 S531 series laptops
- Battery typeLithium-Ion
- Battery voltage rating11.52 V
- Battery capacity42 Wh
- Product colorBlack
- Product typeBattery
- Compatible withFor VivoBook S15 S531FA S531FL X531FL K531FA V531FA V531FL K
- 42Wh capacity extends unplugged work time
- 52V lithium-ion chemistry matches original specifications
- Replaces part numbers B31N1842 and 0B200-03440000
- Compatible with numerous VivoBook S15 S531 and related models
- Brand-new condition ensures full rated performance
Replacement battery for Asus VivoBook S15
The Beisite B31N1842 is a new lithium-ion battery rated at 42Wh and 11.52V. It replaces part numbers B31N1842, 0B200-03440000 and 3ICP5/57/80. The unit is finished in black and carries a twelve-month warranty.
Who this suits and who should look elsewhere
Owners of listed Asus VivoBook S15, S530, S531, X531, K531, V531, S5500, F513, M513, K513, S513 and X513 models can use this as a direct replacement. Buyers whose laptop requires a different voltage, capacity or physical connector will not be able to install this unit.
Behaviour under sustained load
The 42Wh lithium-ion cell delivers its rated capacity over a full discharge cycle rather than only in short bursts. Voltage remains stable at 11.52V throughout typical workloads, supporting consistent run time during extended use.
How it compares
Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.
- Price $29.99
- Typical for this category: the median of 27,790 items is $30.99.
Specifications
| Product | |
|---|---|
| Brand name | B31N1842 |
| Model name | B31N1842 |
| Part number | 0B200-03440000 |
| 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 S15 S531FA S531FL X531FL K531FA V531FA V531FL K531FA K531FL S5500F F513 M513 K513 S513 X513 S15 S531F Series |
Questions about this item
Does the B31N1842 battery require a specific AC adapter to charge correctly?
It charges through the laptop's existing power circuit; any genuine or compatible 11.52 V adapter that matches the VivoBook S15 S531 series will work.
Can I keep my original 0B200-03440000 part as a spare and swap between the two?
Yes, both share the same 11.52 V 42 Wh specification and connector, so they are interchangeable in supported models.
How can I verify the 42 Wh capacity is reporting correctly after installation?
Check the battery health section in Windows or BIOS; it should show a design capacity near 42 Wh and a voltage of 11.52 V.
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