Asus Laptop Battery 4100mAh, 2-Cell High Quality – Compatible with Asus X442 / C21N1638 / VivoBook A480U Laptops

Keep your Asus laptop powered all day with this high-quality 4100mAh 2-cell replacement battery. Designed to match the original equipment specifications, it delivers reliable performance and long-lasting power for work, study, and entertainment.

✔ High Capacity 4100mAh: Provides extended battery life for more time between charges.
✔ Precision Compatibility: Works with Asus laptops using part number C21N1638, including Asus X442 and VivoBook A480U models.
✔ Premium Quality: Built with high-grade battery cells for consistent performance and durability.
✔ Safe & Protected: Integrated safeguards against overcharge, over-discharge, short circuits, and overheating for everyday safety.
✔ Easy Installation: Simple plug-and-play replacement — no technical skills required.

Whether you’re replacing an old battery or upgrading your laptop’s power capacity, this Asus replacement battery ensures dependable, long-lasting performance.