RDSJ B31N1912/C31N1912 Laptop Battery for Asus VivoBook 14 — 11.55V 42Wh 3-Cell Replacement

Revitalize your Asus VivoBook with a trusted replacement

The RDSJ B31N1912/C31N1912 battery is designed to restore reliable, on-the-go power for a wide range of Asus VivoBook 14 and related models. Engineered as a compact, 3‑cell Li‑ion pack, this replacement aims to fit cleanly into your notebook’s thin profile while delivering steady performance across daily tasks.

Key specs at a glance:

• Battery type: Li‑ion
• Voltage: 11.55V
• Capacity: 42Wh / 3550mAh
• Cells: 3‑cell

What this means in real use: a fresh battery can help you move through classes, meetings, or creative sessions without being tethered to a wall outlet. The 42Wh capacity is sized to balance compact form with usable unplugged time, especially for users who carry their VivoBook between classrooms, coworking spaces, and travel hubs.

Compatibility and fit

This battery is designed as a compatible replacement for a broad set of VivoBook 14 variants and related lines. It covers models in the E410/E410M/E410MA/EKxxT series, L410/L510 families, and F414/F414MA, E510/E510MA/E510KA, among others. For a precise match, compare your notebook’s battery part numbers (such as B31N1912 or C31N1912) and the connector layout to ensure a seamless swap.

What you get and how to use it: the unit ships new from the manufacturer and is intended for straightforward installation as a direct replacement. The kit supports up to 500 recharge cycles over its lifetime, though actual results depend on usage patterns and device demands. Replacing a battery can refresh performance for everyday tasks like web browsing, document work, and streaming, while keeping your device lighter than many other power options.

Usage tips for best results

• For initial use, discharge to about 5% before charging back up to 95%, then repeat 3–4 times to calibrate.
• Actual runtime will vary with application load, screen brightness, and wireless activity.

Compatibility notes: check your model family and part numbers against the listed references to confirm a proper fit. While this battery is designed as a compatible option, always handle and install hardware with care, following your device’s maintenance guide.

Upgrade your Asus VivoBook with confidence—a fresh, manufacturer‑origin battery can help you reclaim daily mobility, reduce downtime, and extend your notebook’s usable life without changing your computer.