BRTONG Laptop Battery B31N1911 for VivoBook 42Wh

High-quality replacement battery BRTONG B31N1911 (42Wh, 11.55V) built to restore power to compatible Asus VivoBook Flip 14, M413, F413 and related models.

If your laptop no longer holds a reliable charge or shuts down unexpectedly, this replacement pack from BRTONG is engineered to match the original specifications while meeting safety certifications. The cell configuration delivers 42Wh at 11.55V and is designed as a direct swap for the listed part numbers including B31N1911 and C31N1911 and OEM codes like 0B200-03580300. Units are certified to UL, CE and FCC standards and ship with a 12-month warranty and customer support.

Will this battery fit my Asus VivoBook model?

The BRTONG B31N1911 is intended as a compatible replacement for many Asus VivoBook Flip and VivoBook 14 variants. Check your current battery part number or laptop model designation against the compatibility list before purchase. If the part numbers match one of the supplied alternatives, the physical connector and form factor should be compatible.

• Replaces part numbers: B31N1911, C31N1911, 0B200-03580300, 0B200-03580500.
• Compatible models include: TM420IA, M413, TP470, F413, S413, X413, X421 and related series.
• Works with specific SKU variations such as TM420IA-DB71T, M413DA-EB005T, and F413FF.

How long will the battery last and what capacity can I expect?

This battery has a rated capacity of 42Wh which reflects the energy storage equivalent to the original pack for compatible models. Actual run time depends on your laptop’s processor, screen brightness, and workload. BRTONG provides quality control to ensure stable performance close to original specifications.

• Nominal voltage: 11.55V for correct power delivery to the system.
• Rated capacity: 42Wh for balanced runtime and portability.
• Cell type: Lithium-ion for consistent charge/discharge cycles.

Is this battery safe and supported after purchase?

BRTONG batteries are produced and tested to meet widely recognized safety standards and include overcurrent and short-circuit protections built into the pack design. Each product is certified to UL, CE and FCC where applicable and undergoes inspection prior to shipping. If any issue arises, the product includes a 12-month warranty and direct customer support for troubleshooting or replacement.

• Safety certifications: UL, CE, FCC compliant where applicable.
• Manufacturing controls and compatibility checks to reduce installation issues.
• 12-month warranty and prompt email support with responses typically within 24 hours.

What should I know before installing the replacement pack?

Before installing, power down the laptop and remove any external power source, then follow the manufacturer guidelines for battery replacement. Use basic tools and take anti-static precautions; if you’re unsure, a technician or authorized service center can perform the swap. Keep your original battery number to confirm fit and retain packaging until you verify operation.

• Confirm compatibility by matching the part number on your old battery.
• Turn off the laptop and disconnect the charger before opening the case.
• Observe anti-static care and reassemble thoughtfully to avoid connector damage.

Who is this for? The BRTONG B31N1911 replacement battery is aimed at VivoBook and VivoBook Flip owners whose original battery is worn, swollen, or no longer meets daily runtime needs. It suits DIY-savvy users seeking a direct-fit replacement, IT technicians managing device fleets, and anyone who needs a reliable, certified battery alternative with warranty coverage and responsive support. If your Asus model appears in the compatibility list and you want a cost-effective restoration of mobile battery life, this pack provides a practical option.