C21N1347 Laptop Battery Replacement for Asus X555 Series
4.4Editor score
Affordable price point
5000mAh capacity
CE and FCC certified
10 Best ASUS Laptop Battery Replacement (October 2026) Expert Guide
Finding a reliable power source is essential for keeping your laptop running smoothly throughout the day. ASUS laptops are popular for their performance and design, but like all devices, their batteries eventually wear out. Choosing the right replacement ensures your device lasts longer and performs at its peak without unexpected shutdowns.
We have carefully evaluated the top ten ASUS laptop battery replacements available in the market today. Our analysis focuses on compatibility with specific models, safety certifications, cell quality, and customer feedback. This list covers a wide range of ASUS series to help you find the perfect match for your needs.
Each selection in this guide highlights key specifications and user experiences to provide a clear picture of what to expect. We include detailed breakdowns of voltage, capacity, and warranty terms for every product. Please note that prices and availability can change frequently, so always verify details before purchasing.
Top 3 Picks for Best ASUS Laptop Battery Replacement
B31N1912 C31N1912 Laptop Battery Replacement for ASUS VivoBook
4.3Editor score
High capacity 42Wh power
3-cell Li-ion construction
Multiple safety protections included
C41N1731-2 Battery Replacement for ASUS ROG Strix G15 G17
4.6Editor score
67Wh high capacity
BattArmor safety system
Advanced 5.0 technology
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Top 10 Best ASUS Laptop Battery Replacement in 2026 Compared
This side-by-side comparison highlights the key specifications and features of the top ten ASUS laptop battery replacements. Use this table to quickly identify which model matches your laptop series and meets your performance requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
B31N1912 C31N1912 Laptop Battery Replacement for ASUS VivoBook
Voltage: 11.55V
Capacity: 42Wh
Cells: 3-cell
Type: Li-ion
4.3Editor score
Editor's Choice
B31N1912 C31N1912 Battery for Asus VivoBook 14
Voltage: 11.55V
Capacity: 42Wh
Cells: 3-cell
Type: Polymer
4.3Editor score
Best Budget
C21N1347 Laptop Battery Replacement for Asus X555 Series
Voltage: 7.6V
Capacity: 38Wh
Cells: 3-cell
Type: Li-polymer
4.4Editor score
A32-K55 Laptop Battery for ASUS A33-K55 A41-K55
Voltage: 11.1V
Capacity: 5200mAh
Cells: 3-cell
Type: Li-polymer
4.3Editor score
B31N1912 C31N1912 Laptop Battery for ASUS VivoBook 14
Voltage: 11.55V
Capacity: 42Wh
Cells: 3-cell
Type: Polymer
4.3Editor score
B31N1726 Laptop Battery for Asus FX80 FX80G FX80GD
Voltage: 11.4V
Capacity: 48Wh
Cells: 3-cell
Type: Li-polymer
4.3Editor score
TREE.NB B31N1912 Laptop Battery Compatible with ASUS VivoBook 14
Voltage: 11.55V
Capacity: 42Wh
Cells: 3-cell
Type: Li-ion
4.3Editor score
C41N1837 Battery Replacement for Asus Rog Zephyrus GA502
Voltage: 15.4V
Capacity: 76Wh
Cells: 3-cell
Type: Li-ion
4.2Editor score
TREE.NB B31N1912 C31N1912 Laptop Battery Replacement for ASUS VivoBook 14
Voltage: 11.55V
Capacity: 42Wh
Cells: 3-cell
Type: Li-ion
4.4Editor score
C41N1731-2 Battery Replacement for ASUS ROG Strix G15 G17
Voltage: 15.4V
Capacity: 67Wh
Cells: 4-cell
Type: Li-ion
4.6Editor score
1. B31N1912 C31N1912 Laptop Battery Replacement for ASUS VivoBook – Best Overall ASUS Laptop Battery Replacement
B31N1912 C31N1912 Laptop Battery Replacement for ASUS VivoBook
11.55V 42Wh
3-cell Li-ion
Grade A cells
Up to 500 cycles
This battery offers a dependable solution for ASUS VivoBook users seeking consistent performance. With a rating of 4.3 stars it has proven reliable across multiple device models. The 42Wh capacity ensures you can work through your day without worrying about running out of power unexpectedly.
Pros
- Reliable power output
- Comprehensive model coverage
- Safety certifications included
- Support available
- Easy installation tools
Cons
- Return window closes quickly
- Initial setup requires cycle
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The product uses grade A battery cells which support up to 500 recharge cycles over its life. This longevity is crucial for maintaining your laptop functionality in the long term. Safety features like short circuit and overload protection are built in to prevent potential hazards during use.
One consideration is that the initial installation may require a specific cycling process to wake the battery up properly. Users should discharge to 5 percent and cycle three to four times before normal use. This step is standard for many lithium ion batteries and ensures optimal performance.
If you own a compatible VivoBook model this battery is a top recommendation for restoring your device original capabilities. The included screwdrivers simplify the replacement process making it accessible even for those with limited technical experience. Check compatibility lists carefully before ordering.
Extended Battery Life
The grade A cells provide up to 500 recharge cycles ensuring long term value for your investment.
Safety Features
Built in protections against short circuits and overheat risks provide peace of mind during daily charging.
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2. B31N1912 C31N1912 Battery for Asus VivoBook 14 – Strong ASUS Laptop Battery Replacement Option
B31N1912 C31N1912 Battery for Asus VivoBook 14
11.55V 42Wh
3-cell Polymer
Multiple part numbers
Includes installation tools
This replacement battery targets a broad range of ASUS VivoBook 14 models with precision and reliability. Users appreciate the polymer construction which offers flexibility and safety benefits. The 42Wh capacity supports typical daily usage patterns for students and professionals alike.
Pros
- Polymer battery type
- Wide model compatibility
- Good return policy
- Customer support available
- Detailed installation guide
Cons
- Return window restricted
- Need to contact seller
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Part numbers listed on the package make it easier to verify compatibility with your specific laptop model. The inclusion of auxiliary installation tools reduces the need for extra purchases before beginning the replacement process. Clear instructions help minimize errors during installation.
While the return policy offers a 60 day return window there are specific steps to follow for contact. Users should note the seller contact process to ensure smooth communication if issues arise. The policy provides confidence in the product quality.
For those seeking a compatible option for their VivoBook this battery delivers solid performance at a competitive price point. The wide range of supported models means many users will find it fits their device perfectly. Always check the part number against your device before purchase.
Polymer Construction
The polymer battery type offers enhanced safety and design flexibility for modern laptop requirements.
Comprehensive Support
Access to email support and detailed guides ensures users can resolve any setup challenges quickly.
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3. C21N1347 Laptop Battery Replacement for Asus X555 Series – Budget Friendly ASUS Laptop Battery Replacement
C21N1347 Laptop Battery Replacement for Asus X555 Series
7.6V 38Wh
5000mAh capacity
3-cell Li-polymer
CE FCC certified
This battery provides an economical choice for owners of older ASUS X555 series laptops. It maintains a 4.4 star rating indicating strong user satisfaction with its performance. The 5000mAh capacity ensures you get enough energy to handle your daily tasks without constant charging.
Pros
- Affordable pricing
- High mAh capacity
- Safety certifications
- Compatible with X555 series
- Stable performance
Cons
- Lower voltage rating
- Initial cycling recommended
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Safety certifications like CE and FCC are present on this product giving users confidence in its reliability. The Li-polymer construction is known for being stable and less prone to swelling over time. This adds a layer of trust for budget conscious buyers.
As with many replacements the initial setup might require cycling to wake the battery up. Instructions suggest discharging to 10 to 20 percent before charging fully a few times. This process optimizes the battery management system for accurate reporting.
If you are looking to extend the life of your X555 laptop without spending a lot this battery is an excellent choice. The balance of cost and performance makes it a top pick for many users. Verify your model compatibility to ensure a perfect fit.
Cost Effective Solution
Affordable pricing makes this battery an accessible upgrade for users needing reliable power on a budget.
Safety Standards
Certifications ensure the product meets international safety requirements for consumer electronics.
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4. A32-K55 Laptop Battery for ASUS A33-K55 A41-K55 – Reliable ASUS Laptop Battery Replacement
A32-K55 Laptop Battery for ASUS A33-K55 A41-K55
11.1V 5200mAh
Li-polymer type
Overcurrent protection
500 recharge cycles
This battery is designed to fit a vast array of older ASUS models making it a versatile option. Users praise its high 5200mAh capacity which extends usage time significantly compared to worn out cells. The 4.3 star rating reflects consistent performance in real world scenarios.
Pros
- High capacity
- Wide compatibility
- Built-in protections
- Refund guarantee
- Warranty coverage
Cons
- Older model support
- Contact steps needed
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Safety features like overcurrent and anti-overcharge protection are integrated into the design. This ensures that the battery charges safely and prevents potential damage to your laptop motherboard. The 100 percent new material claim reinforces its quality standards.
Support is available with a full refund policy within 30 days. Users should note the steps to contact the seller for issues within the first year. This level of support adds value to the purchase and reduces risk for buyers.
For those with older ASUS laptops this battery offers a chance to rejuvenate your device performance. The wide range of compatible models means many users can find a match here. Always confirm your part number to avoid compatibility issues during installation.
High Capacity Power
With 5200mAh capacity this battery delivers extended runtime for daily computing needs.
Safety Protections
Integrated circuit protection safeguards your device against power surges and overheating risks.
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5. B31N1912 C31N1912 Laptop Battery for ASUS VivoBook 14 15.6" – Solid ASUS Laptop Battery Replacement
B31N1912 C31N1912 Laptop Battery for ASUS VivoBook 14 15.6"
11.55V 42Wh
3-cell Polymer
Part number matches
Installation tools included
This battery replaces the original power source for specific VivoBook 14 and 15.6 inch models. The rating of 4.3 stars shows users are generally satisfied with its performance. The 42Wh capacity provides enough energy for typical productivity tasks without interruption.
Pros
- Matches original specs
- Wide model list
- Good value
- Warranty included
- Customer service
Cons
- Return window short
- Contact for support
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Compatibility is a strong point with specific model numbers listed in the product description. Users can easily check their device against the list to ensure a perfect fit. The inclusion of installation tools adds convenience to the replacement process.
The warranty offers 12 months of coverage with a 60 day return window. Note that contacting the seller is required for issues within this period. This support structure helps buyers feel secure in their purchase decision.
If you own a compatible VivoBook this battery offers a straightforward way to restore your laptop mobility. The alignment with original specs ensures your device functions as intended. Always check the return policy details before purchasing to stay informed.
Model Specific Fit
Designed to match original specifications for seamless integration with your ASUS VivoBook laptop.
Convenient Installation
Included tools simplify the physical replacement process reducing setup time and effort.
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6. B31N1726 Laptop Battery for Asus FX80 FX80G FX80GD – Trusted ASUS Laptop Battery Replacement
B31N1726 Laptop Battery for Asus FX80 FX80G FX80GD
11.4V 48Wh
3-cell Li-polymer
Temperature control
500 recharge cycles
This battery caters to ASUS TUF gaming users who need reliable power during demanding tasks. The 48Wh capacity supports extended gaming sessions or heavy workloads. Users give it a 4.3 star rating showing satisfaction with its performance and fit.
Pros
- High capacity
- Gaming model support
- Safety features
- Warranty coverage
- Quick response support
Cons
- Return window closed
- Contact needed for help
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The battery includes temperature control and anti-overcharge features to protect your system. These safeguards are essential for gaming laptops that generate more heat during use. The 500 recharge cycle claim aligns with standard expectations for quality replacement cells.
Support is available via email with a promise of response within 24 hours. The warranty covers 12 months and a refund within 30 days. This gives buyers confidence that any potential issues will be addressed promptly.
Gaming laptop owners should consider this battery to maintain their system performance and mobility. The compatibility with TUF FX series models is clearly listed. Verify your part number to ensure you select the correct battery for your device.
Gaming Ready Power
48Wh capacity delivers sustained energy for high performance gaming and productivity tasks.
Thermal Management
Temperature control features protect your device during extended high load usage periods.
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7. TREE.NB B31N1912 Laptop Battery Compatible with ASUS VivoBook 14 – Dependable ASUS Laptop Battery Replacement
TREE.NB B31N1912 Laptop Battery Compatible with ASUS VivoBook 14
11.55V 42Wh
3-cell Li-ion
Rigorous testing
Compatible with VivoBook
This battery from TREE.NB targets popular ASUS VivoBook 14 models with specific voltage alignment. Users appreciate the rigorous testing process that ensures correct capacity and current output. The 4.3 star rating suggests it performs consistently in daily use.
Pros
- Rigorous testing
- Accurate voltage
- Support available
- Low self-discharge
- Compatible models clear
Cons
- Generic brand
- Need to check specs
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Safety and stability are emphasized with built-in circuit protections. The low self-discharge rate means the battery holds power well even if not used immediately. This is a useful feature for backup batteries or devices used intermittently.
Customer support is available to help with any issues after purchase. The product description highlights stability and guaranteed battery life. Users should contact the seller directly for any concerns about performance or fit.
For ASUS VivoBook owners this battery offers a stable power solution at a competitive price point. The focus on testing and safety adds value to the product. Always confirm compatibility with your specific laptop model before ordering.
Rigorous Testing
Each unit undergoes testing to ensure consistent voltage and capacity for reliable performance.
Stable Output
Low self-discharge and stable current delivery ensure dependable power for your laptop.
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8. C41N1837 Battery Replacement for Asus Rog Zephyrus GA502 – Powerful ASUS Laptop Battery Replacement
C41N1837 Battery Replacement for Asus Rog Zephyrus GA502
15.4V 76Wh
Grade A product
Multiple protections
500 charge cycles
This battery is designed for high performance ROG Zephyrus models requiring more power. The 76Wh capacity supports intensive applications like gaming or content creation. Users note its 4.2 star rating showing solid performance for power hungry laptops.
Pros
- High capacity
- Supports Zephyrus
- Grade A cells
- Email support
- Replacement warranty
Cons
- Higher price point
- Support via email only
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Safety features include overcharge and short circuit protection to safeguard your device. The Grade A cells ensure fast charges and low power consumption. This helps maintain efficiency and extends the battery life over multiple years.
Support is offered via email with a 12 month replacement policy. Buyers should be aware of the 30 day refund window for immediate issues. The brand commits to friendly customer service to resolve any concerns promptly.
If you own a ROG Zephyrus this battery is a strong choice for extending your laptop mobility. The high capacity ensures you can work longer away from a power outlet. Check your model compatibility before purchasing to confirm fit.
High Capacity Power
76Wh capacity provides extended usage for high performance tasks and gaming.
Grade A Quality
Premium cells offer fast charging and efficient power use for better performance.
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9. TREE.NB B31N1912 C31N1912 Laptop Battery Replacement for ASUS VivoBook 14 – Effective ASUS Laptop Battery Replacement
TREE.NB B31N1912 C31N1912 Laptop Battery Replacement for ASUS VivoBook 14
11.55V 42Wh
3-cell Li-ion
CE UL certified
Standard compatibility
This battery delivers reliable power for ASUS VivoBook 14 series users seeking longevity. The rating of 4.4 stars indicates strong user approval for its performance. The 42Wh capacity supports typical daily tasks effectively for students and professionals.
Pros
- Good ratings
- Safety certified
- Model specific
- Clear instructions
- Stable current
Cons
- Initial cycle needed
- Check return window
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Safety certifications like CE and UL ensure the product meets international standards. This builds trust in its reliability and durability for daily use. The Li-ion technology provides stable current and low self-discharge over time.
Users should note that initial cycling may be needed for the battery to wake up. Discharging to 10 to 20 percent before charging fully helps optimize performance. This is a common requirement for lithium ion replacements to ensure accuracy.
For those needing a standard replacement for their VivoBook this battery is a solid option. The clear model list helps avoid compatibility issues. Always check the warranty and return policy details before finalizing your purchase.
Certified Safety
CE and UL certifications confirm the product meets strict safety standards for consumer electronics.
Reliable Performance
Stable current delivery ensures consistent laptop performance during daily tasks.
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10. C41N1731-2 Battery Replacement for ASUS ROG Strix G15 G17 – Premium ASUS Laptop Battery Replacement
C41N1731-2 Battery Replacement for ASUS ROG Strix G15 G17
15.4V 67Wh
BattArmor safety
4335mAh capacity
Quality certified
This premium battery targets high performance ROG Strix models with advanced safety features. The 4.6 star rating reflects exceptional user satisfaction with its quality and reliability. The 67Wh capacity supports long sessions of gaming or heavy multitasking without interruption.
Pros
- High capacity
- Top rating
- BattArmor safety
- Installation tools
- Premium build
Cons
- Higher price
- Specific model fit
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The BattArmor safety system includes protections against overload and overheating. This advanced safety suite ensures your device remains secure during high power draw. The upgrade to 5.0 technology promises longer lasting and safer performance.
Users receive installation tools and a service guide with the battery for convenience. The quality certification ensures the product is tested for reliability. Support is available 24 hours for any questions or issues with the product.
For ROG Strix owners this battery offers a top tier upgrade to restore full mobility. The high capacity and safety features make it worth the investment. Always confirm your model series matches the compatibility list before ordering.
BattArmor Safety
Advanced safety protections guard against overcharge and heat for secure operation.
Premium Build
High quality materials and technology ensure long term performance and reliability.
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Buying Guide – How to Choose the Best ASUS Laptop Battery Replacement
Selecting the right replacement battery requires understanding your laptop model and the technical specifications that match it. This guide outlines the critical factors to consider before making a purchase to ensure compatibility and safety.
Model Compatibility
The most important factor is verifying that the battery part number matches your laptop's original specification. Check your device model number and compare it against the manufacturer's list to ensure a perfect fit.
Always double check the compatible models list before purchasing to avoid receiving an incompatible part.
Voltage and Capacity
Voltage must match the original battery exactly to prevent damage to your laptop. Capacity measured in Wh or mAh determines how long your laptop lasts on a single charge.
Look for capacity ratings similar to the original to maintain expected battery life.
Safety Certifications
Choose batteries that carry safety certifications like CE FCC UL or RoHS. These marks indicate the product meets international standards for electrical safety and environmental compliance.
Safety certifications help protect your device and yourself from potential electrical hazards.
Cell Quality
Quality cells such as Grade A Li-ion or Li-polymer ensure better longevity and reliability. High quality cells can withstand hundreds of recharge cycles without significant degradation.
Prefer batteries that explicitly mention cell grade to ensure long term performance.
Warranty and Support
A robust warranty policy offers peace of mind in case of defects or early failure. Look for options with at least 12 months of coverage and clear return policies.
Good customer support ensures you can resolve any issues quickly after purchase.
Price Value
Balance the cost with the expected performance and lifespan of the battery. Extremely cheap options may lack safety features or use lower quality cells.
Investing in a reputable brand often saves money in the long run by reducing replacement frequency.
Installation Tools
Some replacements include screwdrivers or installation guides to simplify the process. This can save you time and effort when swapping out the battery.
Check if tools are included to avoid additional purchases before you can replace the battery.
User Reviews
Read customer feedback to gauge real world performance and reliability of the product. Look for patterns in reviews regarding compatibility and durability over time.
Positive user feedback is a strong indicator of a reliable replacement battery.
How to Use and Care for Your ASUS Laptop Battery Replacement
After installing your new battery discharge it to about 10 to 20 percent before charging it fully. This initial calibration helps the battery management system accurately report charge levels and extends longevity.
Avoid leaving your laptop plugged in at 100 percent charge for extended periods to reduce wear on the battery cells. Use the device on battery power regularly to maintain the chemical balance inside the cells.
Store your laptop in a cool dry environment and avoid exposing it to extreme temperatures that can degrade battery health. Keeping the device in a stable climate helps preserve battery performance over time.
Frequently Asked Questions
How do I know which battery replacement fits my ASUS laptop?
To find the correct battery check your laptop model number and original battery part number. Compare these details with the compatibility list provided by the seller to ensure a match. This prevents ordering the wrong size or voltage for your device.
Is it safe to use a third party replacement battery?
Yes many third party batteries are safe if they carry proper safety certifications like CE or UL. Ensure the product meets OEM standards and includes protections against overcharge and short circuits for safe usage.
How long does a replacement laptop battery typically last?
A quality replacement battery can last for several years or about 500 charge cycles depending on usage. Proper care such as avoiding extreme temperatures helps extend the overall lifespan of the battery.
Do replacement batteries come with installation tools?
Some replacement batteries include basic tools like screwdrivers to aid in installation. Check the product details to confirm if tools are included or if you need to prepare your own before starting.
What should I do if my new battery is not recognized?
If the battery is not recognized check the connections and reinstall the battery securely. Sometimes discharging the battery to 5 to 10 percent and cycling it fully can wake it up for proper recognition.
Can I return the battery if it does not work?
Most sellers offer a return window of 30 to 60 days for defective or incorrect batteries. Contact the seller via their provided support channel to initiate a return or replacement process quickly.
Final Thoughts on Choosing the Best ASUS Laptop Battery Replacement
Choosing the right battery replacement depends on your specific laptop model and power needs. The top picks offer a range of options for budget and premium users alike.
Prioritize safety certifications and compatibility to ensure your device runs smoothly after installation.
Always check current prices and warranty terms before purchasing to get the best value for your investment.