B31N1912 Battery Replacement
4.3Editor score
42Wh capacity
24×7 email support
Grade A battery cells
10 Best ASUS Laptop Battery Replacement (October 2026) Expert Guide
Finding a reliable replacement battery for your ASUS laptop can be challenging due to the wide variety of models available. This guide helps you identify the right match for your specific device to ensure safe and efficient power delivery.
We evaluated ten highly-rated products based on compatibility, capacity, safety certifications, and user feedback. Each option was selected to meet strict standards for quality and performance across different ASUS laptop series.
Every pick includes detailed specifications, pros and cons, and installation tips to guide your decision. Please note that prices and availability may change frequently, so check current listings before purchasing.
Top 3 Picks for Best ASUS Laptop Battery Replacement
Fancy Buying C21N1347 Battery
4.4Editor score
Li-polymer battery type
5000mAh capacity
CE and FCC certified
C41N1731-2 ROG Battery
4.6Editor score
67Wh full capacity
BattArmor safety system
15.4V voltage
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Top 10 Best ASUS Laptop Battery Replacement in 2026 Compared
The following table provides a side-by-side comparison of all ten selected products to help you quickly identify the best match for your ASUS laptop model.
ProductsSpecificationsEditor scorePrice
Best Budget
B31N1912 Battery for VivoBook
11.55V Voltage
42Wh Capacity
3-cell Li-ion
E410MA compatible
4.3Editor score
Editor's Choice
B31N1912 Battery Polymer
11.55V Voltage
42Wh Capacity
3-cell Polymer
L410MA compatible
4.3Editor score
Editor's Choice
Fancy Buying C21N1347 Battery
7.6V Voltage
5000mAh Capacity
3-cell Li-polymer
X555 Series
4.4Editor score
Fancy Buying A32-K55 Battery
11.1V Voltage
5200mAh Capacity
Li-polymer type
A45 series
4.3Editor score
B31N1912 Polymer Battery
11.55V Voltage
42Wh Capacity
3-cell Polymer
F414MA compatible
4.3Editor score
B31N1726 TUF Battery
11.4V Voltage
48Wh Capacity
3-cell Li-polymer
FX504 compatible
4.3Editor score
TREE.NB B31N1912 Battery
11.55V Voltage
42Wh Capacity
3-cell Li-ion
R522MA compatible
4.3Editor score
C41N1837 ROG Battery
15.4V Voltage
76Wh Capacity
Grade A cells
GA502 series
4.2Editor score
TREE.NB C31N1912 Battery
11.55V Voltage
42Wh Capacity
3-cell Li-ion
E510KA compatible
4.4Editor score
C41N1731-2 ROG Strix Battery
15.4V Voltage
67Wh Capacity
BattArmor safety
G15 G17 series
4.6Editor score
1. Fancy Buying C21N1347 Battery – Best Overall Value
Fancy Buying C21N1347 Battery
7.6V Li-polymer
5000mAh capacity
CE FCC certified
X555 series fit
This battery offers a strong balance of cost and performance for Asus X555 series users. With a 5000mAh capacity and 7.6V voltage, it delivers reliable power for daily tasks.
Pros
- Affordable price point
- High 5000mAh capacity
- Safety certifications included
- Fast charging capability
- Easy installation tools
Cons
- Limited model compatibility
- Battery life varies
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Its Li-polymer cells ensure stable current output and low self-discharge rates. The CE and FCC certifications confirm strict adherence to safety standards for consumer electronics.
While it fits many older models, users should verify exact part numbers before purchasing. The battery may take a few cycles to reach full capacity after initial installation.
Ideal for budget-conscious buyers needing extended runtime without compromising on safety. This product represents a smart choice for restoring old laptops to full functionality.
Extended Battery Life
The 5000mAh capacity provides longer usage time between charges compared to standard OEM options.
Safety Assurance
Built-in circuit protection guards against overcharge and short circuits during normal operation.
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2. B31N1912 Battery Replacement – Best Budget Pick
B31N1912 Battery Replacement
11.55V Voltage
42Wh Capacity
Grade A cells
24×7 support
This battery targets VivoBook owners looking for a cost-effective solution. It features Grade A cells that promise up to 500 recharge cycles over its lifespan.
Pros
- Very affordable pricing
- Grade A battery cells
- Reliable customer support
- Includes screwdrivers
- UL CE FCC certified
Cons
- Return window limited
- 3-cell only
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Safety features include protection against short circuits and overheat conditions. The package includes necessary tools like screwdrivers for easy replacement installation.
Support is available 24×7 via email, though return windows close after one month. Ensure you contact the seller directly if any issues arise post-purchase.
Perfect for users needing a basic, reliable replacement without breaking the bank. The 42Wh capacity offers decent runtime for light to moderate usage.
Value for Money
Low cost paired with essential safety certifications makes this a top budget choice.
Installation Ease
Included screwdrivers help users install the battery without needing extra tools.
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3. C41N1731-2 ROG Battery – Best Premium Option
C41N1731-2 ROG Battery
15.4V Voltage
67Wh Capacity
BattArmor safety
G15 G17 series
Designed for power users with ROG laptops, this battery offers significant capacity and advanced safety. The 67Wh capacity supports longer gaming or work sessions away from outlets.
Pros
- High 67Wh capacity
- Advanced BattArmor system
- Superior safety features
- Installation guide included
- 15.4V high voltage
Cons
- Higher price point
- ROG models only
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Its BattArmor safety system provides robust protection against overcharge and temperature spikes. Quality certification ensures reliable power delivery for high-performance devices.
The price reflects the premium build and features, making it best for those prioritizing longevity. Installation tools and a service manual are included to simplify the process.
Ideal for ROG owners needing maximum runtime and safety for demanding workloads. This battery restores full power potential to compatible gaming laptops.
Superior Capacity
67Wh capacity delivers extended runtime ideal for gaming or intensive tasks.
Robust Safety
BattArmor system ensures safe operation even under high power demands.
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4. B31N1912 Battery Polymer – Solid Performance
B31N1912 Battery Polymer
11.55V Voltage
42Wh Capacity
3-cell Polymer
L510MA Series
This polymer battery fits a broad range of VivoBook models including L410MA and E510KA. It offers consistent performance with a 42Wh capacity suitable for daily tasks.
Pros
- Wide model compatibility
- 60-day return policy
- 12-month warranty
- Includes installation tools
- 3ICP5/57/80 cell
Cons
- Return window closes early
- Standard capacity
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A 60-day return policy and 12-month warranty provide peace of mind for buyers. The package includes an auxiliary installation tool to assist users in replacing the unit.
While the return window closes a month after receipt, contacting the seller solves issues quickly. The 3-cell design balances weight and power effectively for thin laptops.
Best for VivoBook users seeking a reliable replacement with good support terms. This option ensures compatibility and steady power for your portable workstation.
Broad Compatibility
Supports multiple VivoBook series from E410 to L510 with accurate fit.
Warranty Support
12-month warranty covers potential defects ensuring buyer confidence.
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5. Fancy Buying A32-K55 Battery – Classic Series Fit
Fancy Buying A32-K55 Battery
11.1V Voltage
5200mAh Capacity
Li-polymer type
A55 R500 Series
Targeting older ASUS series like A45 and R500, this battery offers a high 5200mAh capacity. It revitalizes legacy laptops with dependable power and protection features.
Pros
- High capacity 5200mAh
- Fits many older models
- Overcharge protection
- 24-hour response
- 12-month warranty
Cons
- Older model focus
- Basic safety features
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Safety circuits guard against overcharge and overdischarge risks during regular use. The manufacturer promises a 24-hour response time for any customer support inquiries.
While it focuses on older models, the quality remains consistent with modern standards. Ensure your exact model number matches the list before ordering to avoid fit issues.
Perfect for maintaining older ASUS laptops still in regular use. This battery extends device life with a substantial capacity upgrade.
High Capacity
5200mAh capacity ensures longer usage times for legacy devices.
Responsive Support
Seller responds within 24 hours to address any product concerns.
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6. B31N1912 Polymer Battery – Reliable Power
B31N1912 Polymer Battery
11.55V Voltage
42Wh Capacity
3-cell Polymer
E410KA Series
Another strong contender for VivoBook 14 models, this polymer battery delivers stable power. It supports various series from E410 to L510MA ensuring wide compatibility.
Pros
- Multiple model support
- Includes manual
- 60-day return window
- 12-month warranty
- Polymer type safety
Cons
- Return window closes
- Limited cell count
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Installation tools and a user manual are included to simplify the replacement process. The 60-day return window offers buyers more time to test the product.
While the return window closes a month after receipt, the 12-month warranty protects against defects. Polymer cells provide safer operation compared to traditional liquid types.
Best for VivoBook users needing a straightforward replacement with good warranty coverage. This choice restores mobility to your lightweight laptop.
Installation Support
User manuals and tools included assist users during installation.
Extended Return
60-day return window allows more time for product evaluation.
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7. B31N1726 TUF Battery – Gaming Ready
B31N1726 TUF Battery
11.4V Voltage
48Wh Capacity
3-cell Li-polymer
FX80 FX505 Series
Designed for TUF Gaming laptops like FX504 and FX80 series, this battery meets high power demands. It features 11.4V voltage and 48Wh capacity for portable gaming.
Pros
- Fits gaming TUF series
- Overcurrent protection
- Temperature control
- 12-month warranty
- 24-hour response
Cons
- Gaming models only
- Standard 48Wh
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Safety functions include temperature control and overcurrent protection to prevent overheating during use. The 12-month warranty and 24-hour response support buyer confidence.
Though it targets gaming models, the build quality is reliable for daily tasks too. Users should check their exact part number to ensure the fit.
Ideal for gamers needing a reliable power source for their TUF laptops. This battery supports sustained performance away from a charger.
Gaming Fit
Exact fit for popular TUF gaming laptop models like FX504 and FX80.
Safety Protection
Temperature and overcurrent protection ensures safe operation during use.
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8. TREE.NB B31N1912 Battery – Trusted Brand
TREE.NB B31N1912 Battery
11.55V Voltage
42Wh Capacity
3-cell Li-ion
R522MA Series
TREE.NB batteries are known for rigorous testing and stable performance. This option fits VivoBook 14 models and offers a 42Wh capacity with Li-ion cells.
Pros
- Rigorous testing
- Stable current output
- Low self-discharge
- Certified by CE UL
- Friendly support
Cons
- Limited model range
- Standard specs
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Certifications like CE and UL confirm the product meets strict environmental and safety standards. The battery maintains stable current and low self-discharge for long storage.
Support is friendly and responsive to any product questions or concerns. Users report reliable performance after initial calibration cycles.
Best for those valuing quality testing and brand trust in replacement batteries. This choice ensures your VivoBook runs reliably again.
Quality Testing
Rigorous testing ensures correct voltage and capacity for your device.
Stable Output
Low self-discharge and stable current support consistent performance.
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9. C41N1837 ROG Battery – High Power
C41N1837 ROG Battery
15.4V Voltage
76Wh Capacity
Grade A cells
GA502 Series
This ROG Zephyrus battery offers high capacity with 76Wh and 15.4V for extended performance. It supports demanding workloads with Grade A cells for longevity.
Pros
- High 76Wh capacity
- Grade A cells
- Multiple protections
- 30-day refund
- 24h email support
Cons
- Higher price
- Zephyrus models only
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Multiple protections guard against overcharge and short circuits to protect your device. A 30-day refund policy and 24-hour support add to buyer confidence.
The higher price reflects the premium capacity and safety features for high-end laptops. Ensure compatibility with GA502 or GX502 series before ordering.
Ideal for Zephyrus owners needing serious power for creative or gaming tasks. This battery maximizes your device's portable performance potential.
High Power
76Wh capacity and 15.4V support demanding applications effectively.
Grade A Quality
Grade A cells ensure fast charging and longer battery life.
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10. TREE.NB C31N1912 Battery – Safe Replacement
TREE.NB C31N1912 Battery
11.55V Voltage
42Wh Capacity
3-cell Li-ion
F414MA Series
This TREE.NB replacement delivers safe and stable performance for VivoBook 14 devices. It is certified by CE and UL to meet strict safety standards.
Pros
- CE UL certified
- Environment compliance
- Installation note provided
- Stable performance
- Full support
Cons
- Calibration required
- Limited models
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Compliance with environmental standards ensures responsible manufacturing. The package includes notes on battery calibration for optimal performance after installation.
Users note reliable operation after a few charge cycles. The 3-cell design balances weight and power for daily portability needs.
Best for VivoBook owners seeking a certified safe replacement option. This choice restores your laptop to factory power levels.
Safety Certification
CE and UL certifications ensure the battery meets strict safety rules.
Environmental Care
Environment compliance reflects responsible and safe manufacturing practices.
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Buying Guide – How to Choose the Best ASUS Laptop Battery Replacement
Selecting the right replacement battery requires checking model compatibility, capacity, and safety certifications to ensure reliable performance.
Compatibility
Always verify your laptop model number and battery part number before purchasing. Even small differences in model series can lead to fit issues.
Matching exact part numbers ensures the battery connectors fit correctly inside your laptop chassis.
Capacity
Look for batteries with at least the original capacity or higher to maximize usage time. Higher Wh ratings mean longer battery life away from a power source.
A 42Wh battery is standard for many models while 67Wh options suit high-power gaming laptops.
Cell Type
Li-ion and Li-polymer cells offer better safety and weight compared to older chemistries. Li-polymer often allows for slimmer designs in modern laptops.
Choose Li-polymer if your device supports it for enhanced safety and lighter weight.
Safety Certifications
Ensure the product carries CE FCC or UL certifications to confirm it meets safety standards. These certifications protect against risks like overheating or short circuits.
Always choose a battery with recognized safety marks to protect your device and personal safety.
Warranty and Support
A solid warranty policy gives you confidence in the product quality and durability. Look for at least 12 months of coverage for peace of mind.
Responsive customer support helps resolve issues quickly if the battery fails to work properly.
Return Policy
Check how long the return window lasts as some sellers restrict returns after one month. A longer return window lets you test the battery properly.
Be aware that some sellers close the return window early so act quickly if issues arise.
Installation Tools
Some packages include screwdrivers or tools to help with the replacement process. This convenience saves you from buying extra tools separately.
Always check if the battery includes necessary tools to simplify your installation.
Voltage and Cycles
Ensure the voltage matches your laptop requirements exactly to avoid damage. High-quality cells support up to 500 recharge cycles for long-term value.
Matching voltage and cycle life ensures consistent performance without risking your hardware.
How to Use and Care for Your ASUS Laptop Battery Replacement
Before installing the new battery discharge it to around 10-20 percent to avoid damaging your system. This step ensures the battery registers correctly and prevents potential software errors.
After installation charge the laptop fully and cycle the battery three to four times to wake it up. This process helps the system recognize the new capacity and optimizes performance.
Keep your laptop in cool environments and avoid leaving it plugged in constantly to extend battery life. Proper care maintains the health of your battery and ensures consistent power over time.
Frequently Asked Questions
How do I find the right battery for my ASUS laptop?
Check your laptop's battery label for the part number like B31N1912 or C31N1912. Then search using this number plus your laptop model to ensure exact compatibility.
Do I need to discharge the new battery before use?
Yes discharge the new battery to around 10-20 percent before installing it. This step ensures the system recognizes the new battery correctly and avoids errors.
How long do replacement batteries last?
High-quality replacement batteries can last up to 500 recharge cycles over their lifespan. With proper care you can expect two to three years of reliable daily usage.
Are replacement batteries safe to use?
Yes reputable replacements carry CE FCC or UL certifications for safety. Look for built-in protection against overheating short circuits and overcharge.
Can I replace the battery myself?
Yes most users can replace it using a screwdriver and basic skills. Always disconnect the old battery before connecting the new one to avoid electrical issues.
Why is my new battery not recognized?
Check that the connector is fully seated and try cycling the battery three to four times. Reinstall the battery and ensure all steps are followed correctly.
What if the battery returns after the window closes?
Contact the seller directly through the order page for support issues. Most sellers offer email support for problems even if the return window is closed.
Do higher capacity batteries fit my laptop?
Only if the physical dimensions and voltage match your original battery. Higher capacity options are available but must be compatible with your laptop model.
Final Thoughts on Choosing the Best ASUS Laptop Battery Replacement
We highlighted ten top-rated replacements offering reliable power for various ASUS models from VivoBook to ROG. Each option balances capacity safety and price for different user needs.
Prioritize compatibility and safety certifications to ensure your laptop runs safely for years. Look for warranties and good support to protect your investment over time.
Remember that prices and availability change regularly so verify current listings before purchasing. Check your exact model and part number to avoid ordering mistakes.