We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black lithium-ion laptop battery pack

KingSener

KingSener B31N2015 48Wh 11.4V laptop battery

SKU CH-60T3-3GYTR MPN B31N2015

48 Wh lithium-ion replacement battery for Asus VivoBook models K712EA, A712EA, R710EA, S710EA, S712EAM and S712EQM

  • Battery Voltage11.4V
  • Battery Capacity4240mAh / 48Wh
  • 48 Wh capacity powers Asus VivoBook models
  • 4 V Li-ion cells match original voltage
  • 4240 mAh rating equals design capacity
  • Brand-new replacement fits K712EA and S712 series
  • High-quality PCB ensures stable output

Replacement Battery for Asus VivoBook

The KingSener B31N2015 is a new 48Wh lithium-ion battery built to replace the original pack in Asus VivoBook models such as the K712EA, A712EA, R710EA, S710EA, S712EAM and S712EQM. It delivers 11.4V and 4240mAh from high-quality cells and a matching PCB, and it comes in black with the same physical dimensions as the factory unit. Buyers who need a higher-capacity pack or a different voltage should look elsewhere.

Sustained Discharge Behaviour

The cells are rated to provide stable capacity over repeated charge cycles rather than only a brief peak. Following the maker's guidance, two or three full charge-and-discharge cycles from low current help the pack reach its rated 48Wh, and avoiding continuous adapter connection while the battery is fitted reduces long-term wear. The design capacity is guaranteed not to fall below the stated figure when the pack leaves the factory.

Compatibility Checks Before Ordering

Verify the original battery model number B31N2015 or part number 0B200-03350700 on your existing pack and compare the connector layout with the product photos. Confirm your laptop appears in the supported model list above, because the pack will not fit other series. Store the battery above 80% charge if it will be removed for more than a month, and keep it away from hot or humid environments.

Highlights

  • 48 Wh capacity powers Asus VivoBook models
  • 4 V Li-ion cells match original voltage
  • 4240 mAh rating equals design capacity
  • Brand-new replacement fits K712EA and S712 series
  • High-quality PCB ensures stable output

Specifications

BrandKingSener
ModelB31N2015
Part NumberB31N2015
0B200-03350700
Battery Voltage11.4V
Battery Capacity4240mAh / 48Wh

Questions about this item

How much heat does the 11.4 V 48 Wh Li-ion pack produce during all-day use?

The battery runs at 11.4 V and 4240 mAh; Li-ion cells of this capacity generate only modest warmth under normal laptop loads.

Must I already own an Asus VivoBook K712EA A712EA R710EA S710EA S712EAM or S712EQM for this B31N2015 to fit?

Yes — the pack is built to the exact dimensions and connector of the original B31N2015 used in those models.

Will the 4240 mAh cell work alongside the original charger and power-management firmware in a 2015-era VivoBook?

The voltage and capacity match the factory spec, so the existing charger and firmware recognise it without changes.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.