Extra Digital Advanced ASUS B31N1842 náhradná batéria do notebooku – 3600mAh 11.52V Li-ion 3-článková, čierna

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.