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Extra Digital Advanced ASUS B31N1842 Replacement Laptop Battery – 3600mAh 11.52V Li-ion 3-Cell, Black

Extra Digital Advanced ASUS B31N1842 Replacement Laptop Battery – 3600mAh 11.52V Li-ion 3-Cell, Black
Extra Digital Advanced ASUS B31N1842 Replacement Laptop Battery – 3600mAh 11.52V Li-ion 3-Cell, Black
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R711
With a 41.47Wh energy reserve and A-grade Li-ion cells, this Extra Digital Advanced battery restores full mobility to ASUS VivoBook 15 X512, F512, R521, and A512 laptops. It replaces part number B31N1842 and delivers the same 11.52V output as the original, so your system runs exactly as intended.Ove... Read More
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Stock Out Of Stock Code 3310077 Brand EXTRA DIGITAL Model NB431977 Warranty 2 Years

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Estimated delivery Tuesday, September 29
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With a 41.47Wh energy reserve and A-grade Li-ion cells, this Extra Digital Advanced battery restores full mobility to ASUS VivoBook 15 X512, F512, R521, and A512 laptops. It replaces part number B31N1842 and delivers the same 11.52V output as the original, so your system runs exactly as intended.

Overview

Engineered for dependable daily use, the Extra Digital Advanced NB431977 is a 3-cell lithium-ion battery with a 3600mAh capacity. It is a direct replacement for ASUS B31N1842 and fits multiple VivoBook 15 configurations. The battery is brand new, rechargeable, and built with A-grade cells to ensure long service life and stable performance.

What stands out

  • 3600mAh capacity and 41.47Wh energy for extended runtime
  • 11.52V output matches original ASUS specifications
  • Integrated protection against overcharge, over-discharge, and short circuits
  • A-grade Li-ion cells for reliable charge cycles
  • CE, FCC, and RoHS certified for safety and environmental compliance
  • Black internal battery designed for a seamless fit

Technical details

  • Battery Type: Lithium-ion (Li-ion)
  • Capacity: 3600 mAh
  • Voltage: 11.52 V
  • Energy: 41.47 Wh
  • Number of Cells: 3-Cell
  • Color: Black
  • Compatible Brand: ASUS
  • Replaces Part Number: B31N1842
  • Compatible Laptop Series: ASUS VivoBook 15 X512, F512, R521, A512 Series
  • Condition: New
  • Protection Features: Overcharge, Over-discharge, Short Circuit Protection
  • Rechargeable: Yes
  • Cell Grade: A-Grade
  • Certifications: CE, FCC, RoHS
  • Product Sub-Type: Internal Laptop Battery
  • Manufacturer: Extra Digital
  • Series: Advanced

Our verdict

A reliable, certified replacement battery that matches original specs and fits multiple ASUS VivoBook 15 models. A-grade cells and full protection circuitry make it a smart choice for restoring your laptop's portability.

Specifications
AC (power) in
No
Bluetooth
No
Brand
Extra Digital
Built-in microphone
No
Cables included
No
Card reader integrated
No
Category
Laptop Battery
DC-in jack
No
EAN
9990000431977
Manual
No
Model
NB431977
MPN
NB431977
Near Field Communication (NFC)
No
Number of speakers
0
On/off switch
No
Product colour
Black
Product type
Internal Laptop Battery
Type
Laptop Battery
USB ports quantity
0
Warranty period
12 months
Wi-Fi
No
Price history over the last 6 months
Extra Digital Advanced ASUS B31N1842 Replacement Laptop Battery – 3600mAh 11.52V Li-ion 3-Cell, Black
Current
R711
Lowest
R695
Highest
R711
Change 24H
+R10   +1%
Week
+R16   +2%
Month
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