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 battery pack with connector pins and label showing 11.55V 42Wh 3-cell

PISKEKAT

PISKEKAT B31N1912 C31N1912 11.55V 42Wh 3-cell laptop battery

SKU CH-X7QB-EE4C8

Li-ion 11.55 V 42 Wh 3-cell replacement battery rated for up to 500 recharge cycles, compatible with Asus VivoBook 14 E410, L410, F414, E510 and L510 series

  • Battery TypeLaptop Batteries
  • Li-ion chemistry delivers stable 11.55 V output for reliable power
  • 42 Wh capacity supports extended sessions on compatible VivoBook 14 models
  • 3550 mAh rating provides consistent energy for daily workloads
  • Three-cell design balances runtime with a slim form factor
  • Up to 500 recharge cycles extends usable service life

Compatible VivoBook 14 replacement battery

This lithium-ion battery replaces the original Asus B31N1912 and C31N1912 packs used in multiple VivoBook 14, E410, L410, F414, E510 and L510 models. It delivers 11.55 volts and 42 watt-hours from a three-cell design. The part suits owners of those specific laptops who need a direct swap for a depleted original unit. It is not for users whose machines require a different voltage, connector layout or form factor.

Thermal and power behaviour

The pack uses standard Li-ion chemistry rated for up to 500 recharge cycles over its service life. Normal operation stays within the 11.55 V specification, so heat output matches the original battery profile. No active cooling or fan is involved; the laptop's own thermal management handles any warmth during charge or discharge. Power draw follows the host system's demand without extra overhead.

Build and daily handling

The battery fits the same bay and uses the identical connector as the factory unit, so installation requires only a screwdriver and careful seating of the interface. If the laptop does not recognise the pack at first, the maker advises re-seating the connector, discharging to 10-20 percent, then completing three to four full charge cycles. The three-cell construction keeps the profile slim for the existing chassis. Buyers needing higher capacity or a different cell count should look elsewhere.

Highlights

  • Li-ion chemistry delivers stable 11.55 V output for reliable power
  • 42 Wh capacity supports extended sessions on compatible VivoBook 14 models
  • 3550 mAh rating provides consistent energy for daily workloads
  • Three-cell design balances runtime with a slim form factor
  • Up to 500 recharge cycles extends usable service life

Specifications

Battery TypeLaptop Batteries

Questions about this item

How do I install the B31N1912 C31N1912 battery and what step is often missed?

Power off the laptop, remove the bottom case screws, disconnect the old battery connector, fit the new 3-cell 11.55V pack, and press the connector firmly until it clicks — a loose plug is the most common reason the system does not recognise the battery at first boot.

What maintenance will this 42Wh Li-ion battery need later?

The pack is rated for up to 500 recharge cycles; after that capacity drops noticeably and the only maintenance is a full replacement — no calibration routine or cell balancing is required by the user.

What limit appears first during sustained use of this 3550mAh battery?

Under continuous load the 42Wh capacity is the first constraint — runtime shortens as the cells age toward the 500-cycle rating, while voltage stays at 11.55V until the pack can no longer hold useful charge.

Also in this aisle

People compared these

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