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 laptop battery with connector pins and label showing 11.55V 42Wh

2-Power B31N1912 11.55V 42Wh laptop battery

SKU CH-Y172-59C9N MPN B31N1912

Replacement lithium-ion battery supplying 11.55 volts and 42 watt-hours for compatible Asus VivoBook 14 models

  • Battery typeLithium-Ion
  • Battery voltage rating20 V
  • Power adapter voltage20 V
  • Power adapter wattage100 W
  • Compatible with?For Asus VivoBook 14 E410 E410MA E410MA-EK007TS E410MA-EK01
  • Key featuresLithium ion, Rechargeable, 11.55 V, 3,550 mAh, 42 Wh, ?For A
  • Replaces original B31N1912 and C31N1912 part numbers
  • 42Wh lithium-ion capacity powers compatible VivoBook models
  • 55V 3550mAh rating matches factory specifications
  • Grade A cells deliver up to 500 recharge cycles
  • Includes screwdrivers for straightforward self-installation

Replacement battery for VivoBook 14

The 2-Power B31N1912 is a new lithium-ion battery built for Asus VivoBook 14 E410, L410 and F414 series laptops. It matches the original B31N1912 and C31N1912 part numbers and fits models such as E410MA, L410MA-BV058TS and F414MA. The pack uses grade-A cells and includes screwdrivers for installation.

42 Wh capacity with 500-cycle rating

Rated at 11.55 V and 42 Wh (3550 mAh), the three-cell pack delivers the same energy as the factory unit. It comfortably powers typical office and browsing workloads through a full day, while heavier tasks such as video playback will reduce run time. The cells are specified for up to 500 recharge cycles over their lifespan.

UL, CE, FCC and RoHS certified with protection

The battery carries UL, CE, FCC and RoHS certifications and integrates short-circuit, overheat and overload protections. A standard connector aligns with the VivoBook chassis, and the included screwdrivers simplify the swap. Buyers needing a higher-capacity pack or a different form factor should look elsewhere.

How it compares

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

Price $39.99
Pricier than about 71% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand name2-Power
Model nameB31N1912
Part numberB31N1912
Power
Battery typeLithium-Ion
Battery voltage rating20 V
Power adapter voltage20 V
Power adapter wattage100 W
Size & build
Product weight220 g

Questions about this item

Will this 11.55V 42Wh battery fit my VivoBook 14 E410MA-EK017TS without changing the original charger?

Yes, it replaces the original B31N1912 or C31N1912 pack and works with the laptop's existing 20V power adapter.

How can I verify the battery is recognised and charging correctly after I install it?

The OS should show the new pack at 11.55V and 3550mAh; if it is not detected, reseat the connector, discharge to 5%, then complete three to four full charge cycles.

Does the package include the screwdrivers needed to open the VivoBook 14 L410MA-BV058TS case?

The manufacturer states the box comes with screwdrivers for the installation.

More in Laptop Chargers & Batteries

Similar items