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Rectangular black lithium-ion laptop battery, 42Wh 11.52V

Beisite

Beisite B31N1637 42Wh 11.52V laptop battery

SKU CH-JHPG-J1S8A

42Wh 11.52V lithium-ion replacement battery for Asus VivoBook S15 and X510 series laptops

  • Battery typeLithium-Ion
  • Battery voltage rating11.52 V
  • Battery capacity42 Wh
  • Product colorBlack
  • Product typeBattery
  • Compatible withFor VivoBook S15 S510 S510U S510UA S501UF S510UQ X510 X510U
  • 42Wh lithium-ion cell delivers extended runtime for compatible Asus VivoBook models
  • 52V operating voltage matches original specification for stable system performance
  • Replaces part numbers B31N1637, 31CP5/57/81 and multiple 0B200 series codes
  • Fits a wide range of VivoBook S15, X510, F510 and K510 series laptops
  • Brand-new condition with 12-month supplier warranty included

42Wh replacement battery for Asus VivoBook S15

This 11.52V lithium-ion pack replaces the original B31N1637 cell in numerous VivoBook S15 S510 and X510 models. It is intended for owners whose factory battery no longer holds a useful charge. Buyers needing a higher-capacity pack or a different voltage will not be served by this unit.

Sustained output matches the original 42Wh rating

The lithium-ion chemistry delivers consistent voltage across the discharge curve rather than a brief peak followed by rapid sag. Capacity remains stable over repeated cycles when the pack is kept within normal temperature limits. Cells that are stored fully charged for months may lose some recoverable capacity.

Direct fit for listed part numbers.

The battery aligns with the existing screw posts and connector on supported VivoBook S15 and X510 chassis. Common issues arise when the replacement part number does not match the sticker on the old pack or when the retaining screws are over-tightened and strip the plastic bosses.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $32.99
Pricier than about 57% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameB31N1637
Model nameB31N1637
Part number31CP5/57/81
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.52 V
Battery capacity42 Wh
Compatibility
Compatible withFor VivoBook S15 S510 S510U S510UA S501UF S510UQ X510 X510U X510UA X510UF X510UQ X510UR X541U X542U X510UR F510U F510UN K510UQ Series

Questions about this item

Does the 42 Wh lithium-ion pack run hot or draw extra power during all-day use?

The 42 Wh lithium-ion cell operates at 11.52 V and is designed to match the original thermal profile, so it does not add heat or power draw beyond what the laptop expects.

My VivoBook S510UA still has the factory AC adapter — will this 31CP5/57/81 battery charge correctly with it?

Yes, the replacement part numbers B31N1637 and 31CP5/57/81 are direct equivalents, so the existing 11.52 V charger will charge the pack normally.

I plan to keep my older X510UA alongside the newer S510UN — does this battery fit both models without modification?

The pack replaces B31N1637, B31Bi2H, B31Bi9H and 0B200-02590000, which are listed for both the X510UA and S510UN series, so it fits either chassis directly.

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