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Rectangular black lithium-ion laptop battery with three cells and screwdrivers included

BFKK

BFKK B31N1912 laptop battery 11.55V 42Wh

SKU CH-PDK2-9SA2N MPN B31N1912

11.55 V, 42 Wh lithium-ion replacement battery with three cells and 500 recharge cycles for compatible ASUS VivoBook models

  • Reliable power for compatible ASUS VivoBook models
  • 55 V 42 Wh capacity supports daily workloads
  • Grade A Li-ion cells rated for up to 500 recharge cycles
  • Includes screwdrivers for straightforward self-installation
  • Certified to UL CE FCC RoHS safety standards

Direct replacement for ASUS VivoBook 14

This BFKK B31N1912 battery replaces the original C31N1912 pack in ASUS VivoBook 14 models including E410M, E410MA, L410M, L410MA, F414MA, E510MA, E510KA, L510MA and R522MA. It delivers 11.55V and 42Wh capacity using three grade A lithium-ion cells rated for up to 500 recharge cycles.

Fits existing chassis without extra parts

The pack matches the factory voltage, capacity and connector layout so it slots into the same battery bay and locks with the original screws. No adapter cables, firmware updates or BIOS changes are required. The only tools needed are the two screwdrivers included in the package.

Screwdrivers and conditioning guide included

A small Phillips and Torx driver set lets you open the bottom case and swap the battery in minutes. The printed tip sheet explains the wake-up routine: discharge to 5 percent, then complete three to four full charge cycles so the fuel gauge calibrates correctly.

How it compares

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

Price $48.99
Pricier than about 81% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

How many recharge cycles does the B31N1912 battery support before capacity drops?

The battery uses grade A cells rated for up to 500 recharge cycles over its life.

What protections are built into this replacement battery for continuous operation?

It includes short circuit, overheat and overload protections certified to UL, CE, FCC and RoHS standards.

Which screwdrivers are included for installing the B31N1912 in a compatible VivoBook?

The package comes with the screwdrivers needed to open the laptop and swap the battery.

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