NinjaBatt B31N1912 packaging shows premium Asus replacement battery for reliability
NinjaBatt battery installed inside a VivoBook for daily tasks
41.9Wh capacity label highlights true charging potential
3-cell Li-Polymer construction emphasizes compact, lightweight design
Safety features protect against short circuits and overheating during use
Compatibility with multiple VivoBook models offers flexible option

NinjaBatt

NinjaBatt B31N1912 / C31N1912 Asus Battery for VivoBook 14/15 – 41.9Wh (11.55V) Replacement

Free U.S. shipping and free 30-day returns. Check the compatible models in the description below.

$42.72

In stock. Ships free, usually within 1–4 business days.

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Check the listed compatible models and specs before you order. Questions? Email us.

Multi-device One for each device (3)

Free tracked shipping and secure checkout on every U.S. order.

Free shipping

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Free tracked shipping on every order. Most orders arrive within 3–8 business days.

Free 30-day returns

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Return eligible items within 30 days of delivery for a full refund. We email you a prepaid return label.

Peak-demand shipping delays

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During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

Email support

Questions about fit or an order? Email nexoltic@gmail.com. We reply on business days (Mon–Fri).

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Product details

Revitalize Your Asus VivoBook with NinjaBatt B31N1912 / C31N1912

Keep your daily workflow moving with a reliable replacement battery designed for Asus VivoBook models. NinjaBatt blends premium materials, safety features, and thoughtful engineering to help you power through work, study, and light entertainment without interruption.

Premium quality and true capacity

Built with high-grade cells in a compact 3-cell Lithium-Polymer design, this pack delivers a measured capacity of 41.9Wh at 11.55V. The result is power that aligns with OEM expectations, offering steady charge delivery across typical sessions. Real-world results vary, but the battery is engineered to support reliable daily use.

  • Premium quality replacement battery with top-tier cells and built-in safety features
  • OEM-spec tested to ensure dependable performance
  • 41.9Wh / 11.55V energy rating for steady daily use
  • Compact 3-cell Li-Polymer design keeps weight and footprint manageable
  • 12-month warranty and supporting protections for peace of mind

Safety, durability and long-term value

Performance isn’t just about power—it’s about protection. The NinjaBatt pack includes safeguards such as short-circuit, overheat, and overload protection. Grade A cells and robust circuitry are chosen to withstand repeated charging cycles, helping you rely on your notebook through busy weeks.

  • Safety features guard against common power risks
  • Grade A cells designed for up to 500 charging cycles
  • 12-month warranty supports lasting value

Wide compatibility for flexibility

Designed to fit a broad array of VivoBook 14 and 15 models, including E410, E510, L410, L510, R429MA, and X415/X515 variants. This makes it a flexible option if you’re upgrading or replacing across different devices in your lineup.

Tips to get the most from your replacement

To optimize performance and lifespan, follow standard care practices such as avoiding deep discharges, using the original charging setup where possible, and storing the battery in a cool, dry place when not in use.

FAQ

Q: Which models are compatible with NinjaBatt B31N1912 / C31N1912?

A: Compatible with a wide range of Asus VivoBook models including E410, E510, L410, L510, R429MA, and X415/X515 variants.

Q: What performance and warranty does this battery offer?

A: 41.9Wh capacity at 11.55V, up to 500 charging cycles, and a 12-month warranty.

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