B31N1912 Replacement
4.3Editor score
42Wh high capacity
Includes screwdriver tools
24×7 email support
10 Best ASUS Laptop Battery Replacement (October 2026) Expert Guide
Finding a reliable power source is essential for keeping your ASUS laptop running smoothly throughout the day. A failing battery can disrupt your workflow and limit your mobility significantly during critical tasks.
We evaluated ten top-rated replacement batteries based on compatibility, safety certifications, capacity, and user feedback. Our analysis ensures you select a unit that matches your specific laptop model requirements accurately.
Each pick highlights key specifications, installation tips, and warranty details to guide your decision. Keep in mind that availability and pricing may fluctuate over time on the retail platform.
Top 3 Picks for Best ASUS Laptop Battery Replacement
Fancy Buying C21N1347
4.4Editor score
Li-polymer cell technology
38Wh capacity rating
CE and FCC certified
C41N1731-2 ROG
4.6Editor score
67Wh extended runtime
BattArmor safety system
ROG Strix optimized
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Top 10 Best ASUS Laptop Battery Replacement in 2026 Compared
The following table presents a side-by-side overview of the ten selected replacement batteries, highlighting their specific model compatibility, voltage ratings, and key safety features for quick reference.
ProductsSpecificationsEditor scorePrice
Best Budget
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Cells 3-cell
Type Li-ion
4.3Editor score
Editor's Choice
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Cells 3-cell
Type Polymer
4.3Editor score
Editor's Choice
C21N1347 X555
Voltage 7.6V
Capacity 38Wh
Cells 3-cell
Type Li-polymer
4.4Editor score
A32-K55 A Series
Voltage 11.1V
Capacity 5200mAh
Cells 3-cell
Type Li-polymer
4.3Editor score
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Cells 3-cell
Type Polymer
4.3Editor score
B31N1726 TUF
Voltage 11.4V
Capacity 48Wh
Cells 3-cell
Type Li-polymer
4.3Editor score
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Cells 3-cell
Type Li-ion
4.3Editor score
C41N1837 Zephyrus
Voltage 15.4V
Capacity 76Wh
Cells 4-cell
Type Li-ion
4.2Editor score
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Cells 3-cell
Type Li-ion
4.4Editor score
C41N1731-2 ROG
Voltage 15.4V
Capacity 67Wh
Cells 4-cell
Type Li-ion
4.6Editor score
1. Fancy Buying C21N1347 – Best Overall for Older X555 Models
Fancy Buying C21N1347
Voltage 7.6V
Capacity 5000mAh
Type Li-polymer
Cycles 500+
This replacement battery is designed specifically for ASUS laptops in the X555 and related series. It offers a solid capacity rating that matches the original equipment specifications closely for reliable daily use.
Pros
- High capacity for older models
- Li-polymer safety standard
- Affordable price point
- CE and FCC certified
- Clear installation notes
Cons
- Limited to X555 series
- Standard warranty period
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The Li-polymer construction ensures better energy density and safety compared to older chemistries. Users benefit from built-in circuit protection against overheat and short circuits during operation cycles.
While it lacks some premium features like extended warranties, the core performance remains consistent with OEM expectations. The price point makes it a cost-effective solution for extending laptop life.
If your device is an older X555 model with a worn-out power source, this battery provides a straightforward upgrade path. It restores mobility without requiring significant financial investment or technical expertise.
Optimized for X555 Series
The form factor and connector layout are engineered to fit X555 chassis without modification.
Safety Certifications
CE and FCC marks confirm compliance with international electrical safety standards for consumer electronics.
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2. B31N1912 Replacement – Best Budget Option for VivoBook
B31N1912 Replacement
Voltage 11.55V
Capacity 42Wh
Cells 3-cell
Support 24×7
This battery targets the popular VivoBook series covering multiple generations from E410 to L510 models. It delivers a standard capacity that aligns with the original design for consistent performance output.
Pros
- Affordable price point
- Includes screwdriver tools
- Wide model compatibility
- 24×7 email support
- UL CE FCC certified
Cons
- Return window may close early
- Basic warranty terms
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The inclusion of installation tools simplifies the replacement process for users without specialized equipment. Customer support is available around the clock to assist with compatibility questions or setup issues.
While the return window policy requires attention, the overall value proposition remains strong for budget-conscious buyers. Safety certifications provide assurance that the unit meets basic regulatory requirements for consumer electronics.
Ideal for those seeking a cost-effective way to extend their VivoBook's usage time without premium costs. It balances essential features with a competitive market position among third-party replacements.
Tool Kit Included
Screwdrivers and necessary hardware come in the package to facilitate easy installation at home.
Safety Compliance
Certifications like UL and CE ensure the battery meets strict safety guidelines for lithium-ion power cells.
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3. B31N1912 VivoBook – Solid Choice for 14 Inch VivoBooks
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Cells 3-cell
Return 60-day
This unit is engineered for the 14-inch VivoBook variants including E410 and L410 series. It offers a polymer cell design that prioritizes safety and energy density in a compact form factor.
Pros
- Polymer cell technology
- Includes installation tools
- 60-day return policy
- Wide VivoBook compatibility
- User manual included
Cons
- Standard capacity limits
- Support via email only
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The package includes an auxiliary tool and manual to guide users through the physical swap process. A 60-day return window provides additional peace of mind compared to standard thirty-day policies.
Performance aligns with OEM expectations for daily tasks like browsing and document editing. The lack of phone support is offset by clear documentation and a straightforward compatibility list.
Buyers looking for a dependable replacement for specific 14-inch VivoBook models will find this option fitting. It ensures continued portability without requiring significant upgrades to the device itself.
Extended Return Window
A sixty-day period allows ample time to test the battery under real-world conditions before finalizing the purchase.
Installation Guidance
The included user manual details steps for safe removal and connection of the new power unit.
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4. A32-K55 A Series – Reliable Power for Legacy A55 and K55 Models
A32-K55 A Series
Voltage 11.1V
Capacity 5200mAh
Type Li-polymer
Warranty 12-months
Targeting older ASUS laptops like the A45 and K55 series, this battery offers robust capacity for daily use. The Li-polymer construction ensures efficient energy transfer and reduced risk of overheating during operation.
Pros
- High capacity 5200mAh
- Circuit protection features
- 12-month warranty
- Wide legacy compatibility
- Fast charging support
Cons
- Designed for older models
- Physical size may vary
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Features include built-in protection against overcharge and short circuits, enhancing overall safety. The twelve-month warranty period covers potential defects, giving users confidence in long-term reliability.
While not suitable for newer ultrabooks, it remains a critical solution for maintaining older business or home machines. The compatibility list is extensive, covering various part numbers within the A and K series.
Users with legacy devices who need extended runtimes will appreciate the high capacity rating. It effectively restores functionality to aging systems that still meet current computing needs.
Legacy Device Support
Designed specifically for older chassis designs that are no longer supported by official manufacturer parts.
Overcharge Protection
Internal circuits prevent damage from excessive power input during charging cycles to extend lifespan.
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5. B31N1912 VivoBook – Consistent Performance for 15.6 Inch Variants
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Cells 3-cell
Return 60-day
This replacement is optimized for 15.6 inch VivoBook models including E510 and L510 series. It maintains a consistent voltage and capacity to ensure stable power delivery during typical computing sessions.
Pros
- Includes installation tools
- 60-day return policy
- Broad VivoBook fit
- Lightweight polymer design
- Manual provided
Cons
- Capacity matches standard OEM
- Support via email only
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Packaging includes auxiliary tools and a user manual to simplify the physical installation process. The 60-day return policy offers flexibility for users to verify fit and function before finalizing the purchase.
Performance is reliable for everyday tasks without significant deviations from original specifications. The lightweight construction helps maintain the portability of the laptop chassis after the swap.
Suitable for owners of mid-sized VivoBooks who need a straightforward power solution without premium features. It balances cost and functionality effectively for general productivity users.
Tool Availability
Installation accessories are included in the box to avoid the need for separate purchases.
Compatibility Range
Covers a wide range of 15.6 inch VivoBook generations ensuring broad applicability across models.
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6. B31N1726 TUF – Ideal for Gaming and High-Performance TUF Laptops
B31N1726 TUF
Voltage 11.4V
Capacity 48Wh
Type Li-polymer
Warranty 12-months
Designed for ASUS TUF gaming laptops, this battery supports higher energy demands during intensive sessions. The Li-polymer cells provide reliable power with protection against overheat and overcharge conditions.
Pros
- High 48Wh capacity
- Li-polymer safety
- TUF specific fit
- 12-month warranty
- Includes installation tools
Cons
- Gaming battery weight
- Standard charge speed
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It fits models like FX504 and FX80 series accurately, ensuring compatibility with the specific chassis layout. The package includes necessary tools to streamline the replacement process for tech-savvy users.
Warranty coverage extends to twelve months which protects against early failures. The capacity is sufficient to sustain light gaming or heavy tasks away from a power outlet.
Gamers and power users looking to restore mobility to their TUF devices will find this option effective. It prioritizes durability and safety in a form factor designed for rugged use cases.
TUF Optimized
Engineered to match the physical constraints and electrical requirements of the TUF gaming chassis.
Extended Warranty
Twelve months of coverage provides assurance against manufacturing defects beyond the standard return period.
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7. B31N1912 VivoBook – Quality Cell for VivoBook Reliability
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Type Li-ion
Cells 3-cell
This replacement battery emphasizes cell quality with rigorous testing to ensure correct voltage and capacity output. It is designed for VivoBook models like E410 and L510 to restore standard operational performance.
Pros
- High grade A cells
- Low self-discharge
- Stable current output
- Multiple model support
- Customer support
Cons
- Support via email
- Standard warranty terms
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Features include low self-discharge rates and stable current flow which contribute to longer usage times. The unit meets compatibility guidelines for safety and environmental standards during production.
While it relies on email communication for support, users report consistent performance across various model variants. The focus on high-grade materials aims to extend the overall lifecycle of the power unit.
Buyers prioritizing cell quality and reliable specifications for their VivoBook will find this selection appropriate. It offers a direct path to restoring original power capacity without compromising on essential safety metrics.
Grade A Cells
Uses high-quality cells to ensure consistent capacity and safety throughout the product's expected lifespan.
Low Self-Discharge
Maintains charge longer when not in use so the battery is ready when needed for work.
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8. C41N1837 Zephyrus – Premium Solution for ROG Zephyrus Models
C41N1837 Zephyrus
Voltage 15.4V
Capacity 76Wh
Type Li-ion
Warranty 12-months
Targeting high-performance ROG Zephyrus laptops, this battery offers a substantial capacity to support demanding workloads. The 76Wh rating ensures longer runtimes for gaming or creative tasks on the go.
Pros
- High 76Wh capacity
- ROG Zephyrus fit
- Multiple safety protections
- Grade A cells
- 12-month warranty
Cons
- Higher price point
- Limited to ROG
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Features include advanced safety protections against overheat and short circuits which are critical for high-voltage systems. The Grade A cells guarantee efficient power transfer and reduced heat generation during use.
Warranty coverage extends to twelve months to protect against manufacturing defects. The high voltage specification aligns with the specific power management systems in ROG series chassis.
Users with Zephyrus models who need extended battery life should consider this premium option. It delivers robust performance that matches the high standards of gaming hardware.
ROG Optimization
Engineered to match the specific voltage and connector requirements of Zephyrus gaming notebooks.
Safety Protections
Built-in circuits prevent damage from thermal issues or electrical faults during operation cycles.
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9. B31N1912 VivoBook – Certified Safe Replacement for Everyday Use
B31N1912 VivoBook
Voltage 11.55V
Capacity 42Wh
Type Li-ion
Certified CE UL
This battery offers certified safety compliance with both CE and UL marks which provide extra assurance to buyers. It fits VivoBook models E410 and L510 ensuring stable power delivery across various configurations.
Pros
- CE and UL certified
- Strict compatibility tests
- Clear installation notes
- Environmentally safe
- Good rating score
Cons
- Email support only
- Standard return window
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Rigorous compatibility guidelines help prevent issues with voltage or physical fit. The product emphasizes environmental safety standards during manufacturing processes which appeals to eco-conscious users.
Installation notes advise on battery cycling to wake up the new unit properly. User ratings reflect consistent satisfaction with performance and longevity compared to other third-party options.
Those seeking a safe, certified replacement for their VivoBook will find this unit dependable. It balances safety certifications with a straightforward design that meets everyday computing demands.
Certified Safety
UL and CE certification confirm adherence to strict electrical safety standards for consumer electronics.
Cycling Tips
Guidance on discharging to 1020 percent helps activate the battery management system correctly.
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10. C41N1731-2 ROG – Best Premium Choice for ROG Strix Laptops
C41N1731-2 ROG
Voltage 15.4V
Capacity 67Wh
Type Li-ion
BattArmor safety
This premium battery targets ROG Strix laptops with a high 67Wh capacity and advanced safety features. It fits G15 and G17 models accurately to restore the original mobility performance of the device.
Pros
- High 67Wh capacity
- BattArmor safety system
- ROG Strix specific fit
- Includes installation tools
- 24-hour service
Cons
- Premium pricing
- ROG specific
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The BattArmor safety system includes overcharge and temperature protection which reduces risks during intensive gaming sessions. Users receive installation tools and a service manual to guide the replacement process safely.
Customer support responds within 24 hours to resolve any compatibility or setup concerns. The high rating reflects consistent satisfaction with performance and reliability across various ROG chassis variants.
ROG owners looking for top-tier power solutions should consider this option to maintain device longevity. It provides a robust balance of safety, capacity, and support that justifies the investment for serious users.
BattArmor System
Advanced safety technology prevents overheating and circuit overload during demanding use cases.
ROG Fitment
Precise engineering ensures a secure connection to the Strix G and G7 series internal ports.
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Buying Guide – How to Choose the Best ASUS Laptop Battery Replacement
Selecting the right replacement battery requires careful attention to model compatibility and safety features to ensure optimal performance and device longevity.
Model Compatibility
Ensure the replacement battery matches your specific laptop model and part number to avoid installation issues or electrical mismatches. Check the product title and description for listed compatible chassis like VivoBook or ROG Strix.
Always verify the model number on the old battery against the new one before purchasing to guarantee a proper fit.
Voltage and Capacity
Look for voltage ratings that match the original equipment specifications to prevent potential damage to the power management system. Capacity measured in Wh or mAh should align with OEM standards for expected runtime.
Choose a battery with similar or slightly higher capacity if your usage demands longer unplugged performance than the original design allowed.
Safety Certifications
Prioritize units that carry certifications like CE FCC or UL which indicate adherence to international safety standards for lithium-ion cells. These marks help ensure that the battery has passed rigorous testing for electrical safety and stability.
Confirming safety certifications reduces the risk of overheating or electrical hazards during normal usage conditions.
Cell Type and Quality
Distinguish between Li-ion and Li-polymer options as the latter often offers better safety and energy density for modern ultrabooks. High-grade cells contribute to better longevity and consistent performance throughout the battery's lifecycle.
Select batteries that explicitly mention Grade A cells or quality control testing to ensure reliable power output.
Warranty and Support
Look for providers offering at least a 12-month warranty to cover potential defects or early failures after installation. Reliable email support channels help resolve setup or compatibility questions quickly when issues arise.
A longer warranty period signals confidence in product quality and provides peace of mind for the investment.
Installation Tools
Check if the package includes necessary screwdrivers or tools to simplify the physical swap process without needing additional purchases. Some units come with detailed manuals that guide users through the steps safely.
Having the right tools in the box reduces the risk of damage during the replacement procedure and saves time.
Return Policy
Understand the return window details because some products may have shorter periods than the standard Amazon return policy allows. Ensuring you can test the battery within this timeframe protects your purchase decision.
A flexible return policy allows you to verify fit and function before the window closes to avoid extra costs.
User Reviews and Ratings
Analyze user feedback for real-world insights on longevity, fit, and charging behavior beyond just the star rating. Comments about installation experiences or customer service responsiveness offer valuable context for your decision.
A high rating combined with detailed positive reviews usually indicates a reliable choice for your specific laptop model.
How to Use and Care for Your ASUS Laptop Battery Replacement
Before installation ensure the laptop is fully powered down and disconnected from any power sources to prevent electrical shorts. Remove the back cover carefully using the provided tools to access the battery compartment safely.
Connect the new battery connector firmly to the motherboard socket and secure the unit with screws to prevent movement inside the chassis. Reattach the back cover and power on the laptop to check if the system recognizes the battery.
Charge the new battery to full capacity before regular use and cycle it a few times to help wake up the power management system properly. Avoid letting the battery drain completely to zero percent during daily usage to extend its lifespan.
Frequently Asked Questions
How do I know if a replacement battery fits my ASUS laptop?
Check the model number printed on your original battery and compare it with the compatibility list in the product title. Look for exact matches in series names like VivoBook or ROG to ensure proper fitment.
Are third-party batteries as safe as OEM ones?
Reputable third-party brands often include safety certifications like CE and UL which ensure compliance with electrical safety standards. Always verify these marks before purchasing to minimize risks associated with lithium-ion cells.
What should I do if the new battery is not recognized?
Reinstall the battery and check that the connector is fully seated without loose contact. Discharge the battery to around ten percent then recharge it fully to help wake up the internal management system.
How long does a typical replacement battery last?
Most quality replacement units offer around five hundred recharge cycles before capacity degrades significantly. Actual daily usage time depends on your workload and screen brightness settings on the device.
Can I replace the battery myself or do I need a professional?
Many modern laptops allow for DIY replacement if you have basic tools and follow safety precautions. Consult the product manual or online guides for your specific model to ensure correct steps.
Why does the battery show reduced capacity at first?
New lithium batteries sometimes show lower initial readings until they complete a few full charge and discharge cycles. This process helps calibrate the battery meter to reflect true remaining charge levels accurately.
What is the difference between Li-ion and Li-polymer batteries?
Li-polymer cells are generally lighter and safer with better energy density compared to standard Li-ion variants. They are preferred in ultrabooks where weight and physical space are critical design factors.
Does the warranty cover accidental damage?
Most warranties cover manufacturing defects or early failures but exclude physical damage caused by drops or water exposure. Check the specific seller policy to understand the exact terms and conditions provided.
Final Thoughts on Choosing the Best ASUS Laptop Battery Replacement
We have highlighted ten reliable options tailored to different ASUS laptop series ranging from budget-friendly VivoBook choices to premium ROG solutions. Each pick balances compatibility safety certifications and capacity to meet varied user needs.
Prioritize models that match your specific device part number and offer strong safety protections like UL or CE certification. A robust warranty and good customer support also help ensure a smooth experience after installation.
Always verify current pricing and availability on the retailer platform as these factors can change over time. Selecting the right battery restores your laptop mobility and extends its useful life effectively.