SUOZHAN B31N1911 11.55V 42Wh Battery for ASUS VivoBook

SUOZHAN B31N1911 Replacement Battery for ASUS VivoBook

Keep your ASUS laptop running longer with the SUOZHAN B31N1911 11.55V 42Wh Li-Polymer Replacement Battery. Engineered to match OEM specifications, this high-quality battery pack delivers consistent, reliable power for your ASUS VivoBook and Flip series laptops. CE and FCC certified for safety and performance, it's a smart, cost-effective upgrade when your original battery starts losing capacity.

Key Specifications

• Model Number: B31N1911
• Part Number: B-B31N1911
• Voltage: 11.55V
• Capacity: 42Wh
• Battery Type: Li-Polymer
• Cells: 3 Cells
• Certifications: CE, FCC
• Compatible Brand: ASUS

Compatible Models

• ASUS VivoBook Flip 14 TM420IA
• ASUS TP470EA
• ASUS M413DA
• ASUS M413DA-EK162T
• ASUS M413DA-EK007T
• ASUS X421DA
• ASUS X421EA

Why Choose This Battery?

• ✅ OEM-Matched Specs — Voltage and capacity designed to mirror your original ASUS battery
• ✅ CE & FCC Certified — Meets strict safety and electromagnetic standards
• ✅ Li-Polymer Technology — Lightweight, efficient, and long-lasting charge cycles
• ✅ Plug-and-Play Installation — No additional tools or software needed
• ✅ Multiple Safety Protections — Built-in overcharge, over-discharge, and short-circuit protection

What's in the Box?

• 1 × SUOZHAN B31N1911 Replacement Battery Pack

Made in Mainland China.

Looking for other useful tools and accessories? Check out our 10-in-1 Multi-Functional Bone Wrench Repair Hand Tool for electronics maintenance, or our 3-in-1 Precision Mini Screwdriver Keychain — perfect for opening laptop panels during battery swaps.

Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: Is the SUOZHAN B31N1911 battery compatible with all ASUS VivoBook Flip 14 TM420IA models?

A: The SUOZHAN B31N1911 is compatible with a range of ASUS VivoBook models including the TM420IA, TP470EA, M413DA (EK162T & EK007T variants), X421DA, and X421EA. Always verify your laptop's model number and original battery part number before purchasing to ensure a correct fit.

Q: How do I know when my ASUS laptop battery needs to be replaced?

A: Common signs include significantly reduced battery life, the laptop not charging past a certain percentage, unexpected shutdowns, or a swollen battery casing. If your ASUS VivoBook no longer holds a reliable charge, the B31N1911 replacement battery is an ideal solution.

Q: Is the SUOZHAN B31N1911 battery safe to use?

A: Yes. This battery is CE and FCC certified and features built-in protections against overcharging, over-discharging, and short circuits, making it a safe and reliable replacement for your original ASUS battery pack.

Q: How do I install the B31N1911 replacement battery?

A: The battery is designed for a plug-and-play installation. Power down your laptop completely, remove the back panel using a small screwdriver, disconnect the old battery, and connect the new SUOZHAN B31N1911 unit. Reassemble and charge fully before first use.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.