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The Battery for Asus X540 Series, specifically designed for Asus X540LA, X540LJ, X540SA, X540SC, X540YA, and X540S models, is a high-quality and reliable replacement power source for your laptop. This A31N1519 battery ensures that your device remains fully powered, performing at optimal levels, and capable of meeting the demands of everyday tasks, whether you're working, studying, or enjoying entertainment. With a robust design, durable construction, and excellent battery life, the A31N1519 is the ideal solution to replace a degraded or faulty battery, offering a seamless experience with your Asus X540 laptop.

The A31N1519 Battery is built using lithium-ion (Li-ion) technology, a widely-used power source for modern laptops. Lithium-ion batteries are known for their high energy density, lightweight construction, and long-lasting performance. Compared to older battery types such as nickel-cadmium (NiCad) or nickel-metal hydride (NiMH), lithium-ion technology offers more efficient energy storage, which translates to longer battery life and improved overall performance.

This advanced technology ensures that the A31N1519 battery provides reliable and consistent power, making it an excellent choice for Asus X540LA, X540LJ, X540SA, X540SC, X540YA, and X540S laptops. Whether you're using your laptop for light web browsing, work-related tasks, or multimedia consumption, this battery helps you get the most out of your laptop without the frequent need for recharging.

One of the standout features of the A31N1519 battery is its ability to deliver extended battery life. Featuring a 3-cell design with a capacity of 11.1V and 36Wh, this battery offers impressive power that allows users to work or play without worrying about their laptop shutting down unexpectedly. This is particularly important for those who use their laptop on the go, such as students, business professionals, and frequent travelers.

For everyday tasks such as web browsing, office work, or watching videos, the A31N1519 battery can provide several hours of use on a full charge. For more demanding applications, such as light gaming or multimedia editing, users can still rely on the battery to power their device for an extended period before needing to plug in.

The extended battery life offered by the A31N1519 makes it ideal for users who rely on their laptop for productivity, entertainment, or communication while traveling or working in places without easy access to power outlets. With this battery, you can stay productive for longer, ensuring that you can finish your tasks and enjoy your content without being interrupted by low battery warnings.

The A31N1519 Battery is designed to be fully compatible with various models in the Asus X540 Series, including the X540LA, X540LJ, X540SA, X540SC, X540YA, and X540S laptops. This compatibility ensures that the battery fits perfectly in your device, offering a hassle-free replacement experience.

Each of these models has specific power requirements, and the A31N1519 battery is tailored to meet these needs. This original replacement battery is designed to deliver optimal voltage and capacity for these Asus laptops, ensuring that your laptop functions just as it did when it was first purchased.

The A31N1519 is an original replacement battery that ensures maximum compatibility with your laptop, so you can trust that it will work smoothly with the laptop's power management system. Using a non-original or third-party battery may lead to poor compatibility, lower performance, or even potential risks to the laptop’s internal components, making the A31N1519 battery the safest and most reliable option.

Safety is a primary concern when it comes to laptop batteries, and the A31N1519 battery is designed with multiple safety features to protect both your device and your battery from potential risks. These include:

• Overcharge Protection: The A31N1519 battery is equipped with a built-in overcharge protection system that prevents the battery from charging beyond its maximum capacity, which could otherwise lead to overheating and potential damage to both the battery and the laptop.
• Overdischarge Protection: This feature helps prevent the battery from discharging too much, which could cause damage to the battery’s cells and reduce its lifespan.
• Short Circuit Protection: The battery includes short circuit protection to prevent electrical hazards that could cause device malfunctions or failures.
• Temperature Regulation: The A31N1519 battery features temperature regulation to maintain safe operating temperatures, preventing overheating, which can damage the battery and other internal laptop components.

These safety mechanisms ensure that the A31N1519 battery operates safely and reliably, giving you peace of mind while using your laptop for work or leisure. With these safety features in place, you can be confident that your device is protected from common power-related hazards.

Replacing the A31N1519 battery in your Asus X540 Series laptop is a quick and easy process, even for users with limited technical expertise. The battery is designed to fit seamlessly into the battery compartment of your laptop, making installation as simple as removing the old battery and inserting the new one.

To replace the battery, you’ll need to turn off your laptop, remove the back panel, disconnect the old battery, and install the new A31N1519 battery in its place. No specialized tools or knowledge are required, so most users can complete the replacement themselves without the need for professional assistance.

However, if you prefer to have the battery replaced by a technician, you can always visit an authorized Asus service center to have the replacement done quickly and professionally. Regardless of your preferred method, replacing the A31N1519 battery ensures that your laptop continues to perform optimally.

The A31N1519 Battery is made with environmentally friendly materials and manufacturing processes, helping reduce the carbon footprint associated with electronic devices. As more users become conscious of the environmental impact of their electronic devices, Asus ensures that its batteries are safe and sustainable.

When the battery reaches the end of its life cycle, it is important to dispose of it properly through a battery recycling program to prevent hazardous materials from entering landfills. Many electronics stores and service centers offer recycling services for used batteries, helping to ensure that they are disposed of safely and responsibly.

Choosing the A31N1519 Battery for your Asus X540 Series laptop ensures that you’re getting a genuine replacement that meets all the necessary specifications for optimal performance and compatibility. Unlike third-party batteries, the A31N1519 is designed specifically for the X540LA, X540LJ, X540SA, X540SC, X540YA, and X540S models, ensuring a perfect fit and long-lasting functionality.

By opting for the original battery, you're investing in the longevity and reliability of your device. Third-party batteries may seem more affordable, but they can lead to performance issues, potential safety risks, and shorter lifespans. The A31N1519 provides peace of mind, knowing that you're using a battery engineered to work seamlessly with your laptop, maintaining its performance and safety.

The C21N1818-2 Original Asus Battery is a high-quality OEM replacement battery designed specifically for the Asus VivoBook 15 F515JA-AH31 laptop. With a voltage of 7.7V and a capacity of 37Wh (4800mAh), this battery delivers long-lasting power, reliability, and efficiency, making it the ideal choice for users looking to replace an old or degraded battery.

Built with premium lithium-polymer (Li-Poly) cells, the C21N1818-2 battery provides stable power output, ensuring smooth performance for both work and entertainment. This battery is engineered to meet Asus’ strict quality standards, offering 100% compatibility and seamless integration with your Asus VivoBook 15 laptop.

If your current battery is draining quickly, overheating, or unable to hold a charge, replacing it with the C21N1818-2 battery will restore your laptop’s power and performance, allowing for uninterrupted usage and increased productivity.

• Battery Type: Lithium-Polymer (Li-Poly)

• Voltage: 7.7V

• Capacity: 37Wh (4800mAh)

• Number of Cells: 2-Cell

• Compatibility: ASUS VivoBook 15 F515JA-AH31

• Certification: CE, RoHS, FCC certified

• Weight: Lightweight and ultra-slim for portability

The C21N1818-2 battery is equipped with advanced lithium-polymer cells, which offer higher energy density, improved safety, and longer cycle life compared to traditional lithium-ion batteries. Li-Poly batteries provide more stable power and are less prone to swelling, making them a reliable choice for modern laptops.

With a 37Wh (4800mAh) capacity, this battery ensures extended usage time so you can work, browse, stream, and play without frequent recharging. Whether you’re using your laptop for professional tasks, online learning, or entertainment, this battery guarantees consistent and efficient power delivery.

The C21N1818-2 battery is specifically designed for the Asus VivoBook 15 F515JA-AH31, ensuring a perfect fit and seamless functionality. Unlike third-party batteries, this OEM Asus battery matches the original specifications, making installation easy and ensuring reliable performance.

To protect both your laptop and battery from potential hazards, the C21N1818-2 battery includes multiple built-in safety features, such as:

✔ Overcharge Protection – Prevents excessive charging that can degrade battery cells.✔ Over-discharge Protection – Stops the battery from draining completely, which helps extend its lifespan.✔ Short-Circuit Protection – Shields your laptop from electrical malfunctions.✔ Overheating Prevention – Maintains safe battery temperatures even during heavy usage.

These safety measures improve the longevity of the battery while ensuring a secure and stable power supply for your device.

The C21N1818-2 battery is RoHS, CE, and FCC certified, meaning it meets strict environmental and safety regulations. Manufactured using eco-friendly materials, this battery is designed to reduce power consumption while maintaining optimal performance.

The C21N1818-2 battery is designed for the Asus VivoBook 15 series, including:

✔ ASUS VivoBook 15 F515JA-AH31

If you own this Asus VivoBook model and need a reliable, high-performance replacement battery, the C21N1818-2 battery is the perfect solution to restore your laptop’s efficiency and power capacity.

To maximize the performance and longevity of your Asus C21N1818-2 battery, follow these essential battery care tips:

• When using the battery for the first time, charge it to 100%, then let it drain to 5-10% before recharging.

• Repeat this process 2-3 times to ensure proper battery calibration.

• Store and use your laptop in a cool, dry place to prevent overheating.

• Avoid direct sunlight and heat sources, as excessive temperatures can degrade battery health.

• Even though the battery has overcharge protection, it is recommended to unplug the charger once the battery reaches 100% to prevent unnecessary wear.

• Try not to let the battery drain completely before recharging.

• Keeping the charge level between 20% and 80% can significantly extend battery life.

• Always use a genuine ASUS charger to ensure safe and efficient charging.

• Third-party chargers may not deliver the correct voltage, leading to battery degradation.

• If storing the laptop for an extended period, charge the battery to about 50% before turning it off.

• Store it in a cool, dry place to prevent battery degradation.

✔ Genuine OEM-quality battery – Ensures 100% compatibility and reliable performance.✔ 7.7V, 37Wh capacity – Provides long-lasting power for productivity and entertainment.✔ Advanced safety features – Protects against overheating, overcharging, and short circuits.✔ Eco-friendly and certified – RoHS, CE, and FCC certified for environmental and safety compliance.✔ Ultra-slim and lightweight design – Maintains the portability of your ASUS VivoBook.

The DELL 5DN1K 6-Cell Laptop Battery is a high-performance, OEM (Original Equipment Manufacturer) replacement battery, designed to provide reliable and long-lasting power for various Dell Latitude laptops. Whether you're replacing an old battery or need a spare for extended use, this genuine Dell battery ensures seamless compatibility, excellent energy efficiency, and advanced safety features to keep your laptop running efficiently throughout the day.

With premium-grade lithium-ion cells, intelligent power management technology, and built-in safety protections, this battery is ideal for business professionals, students, and home users who require uninterrupted power for work, study, and entertainment.

The Dell 5DN1K battery is designed to provide consistent and reliable power, delivering long-lasting performance to help users stay productive for extended periods.

Key specifications:✔ Battery Type: Lithium-ion✔ Battery Capacity: 6-Cell (High-Capacity)✔ Voltage: 11.1V✔ Watt-Hour (Wh) Rating: Varies depending on model✔ Battery Life: Provides multiple hours of use on a single charge (varies based on laptop usage and configuration)

With its 6-cell design, this battery offers a balance of performance and portability, allowing users to work, browse, and stream without frequent recharges. The intelligent energy management system ensures that power is consumed efficiently, extending battery life and enhancing laptop performance.

As an official Dell replacement battery, the 5DN1K battery meets or exceeds OEM specifications, ensuring 100% compatibility with a range of Dell Latitude models.

• Dell Latitude E5470
• Dell Latitude E5570
• Dell Latitude E5270
• Dell Latitude 5480
• Dell Latitude 5580
• Dell Latitude 5490
• Dell Latitude 5590
• Dell Latitude 5491
• Dell Latitude 5591

Using an OEM battery guarantees that your laptop functions as intended, providing optimal power efficiency, stable performance, and accurate battery status readings. Unlike third-party batteries, which may cause compatibility issues, this genuine Dell battery integrates seamlessly with your laptop’s power management system.

The Dell 5DN1K battery is equipped with intelligent power management technology, which enhances battery efficiency and prolongs its lifespan. Key benefits include:

✔ Optimized Charging Cycles – Helps extend battery life by preventing overcharging and deep discharging.✔ Low Self-Discharge Rate – Retains charge for longer periods when not in use, making it ideal for backup power.✔ Smart Energy Consumption – Adjusts power output based on the laptop’s workload to conserve energy and provide longer runtimes.

By maintaining optimal charging and discharging cycles, this battery ensures that your Dell Latitude laptop operates smoothly, efficiently, and for extended periods.

Safety is a top priority when it comes to laptop batteries, and the Dell 5DN1K battery is designed with multiple built-in safety protections to prevent potential hazards.

🔹 Overcharge Protection – Prevents excessive charging that could damage battery cells and reduce battery lifespan.🔹 Over-Discharge Protection – Ensures that the battery does not drain completely, preserving its long-term health.🔹 Overcurrent & Short-Circuit Protection – Shields against sudden electrical failures and overheating risks.🔹 Thermal Regulation – Built-in sensors monitor temperature and prevent overheating during heavy usage.

With these comprehensive safety measures, this battery ensures secure and reliable operation, protecting both your laptop and battery longevity.

The Dell 5DN1K battery is designed for quick and hassle-free installation. With a plug-and-play design, users can simply remove the old battery and insert the new one without the need for special tools or technical expertise.

Additionally, its lightweight construction makes it an ideal backup battery, ensuring you always have extra power when needed—whether you're in the office, at school, or traveling.

This OEM Dell battery is perfect for various users, including:

✅ Business Professionals & Remote Workers – Maintain uninterrupted productivity with a reliable, long-lasting battery.✅ Students & Educators – Ideal for long study sessions, online classes, and academic research without worrying about recharging.✅ Home Users & Entertainment Seekers – Enjoy streaming, browsing, and video playback without battery anxiety.✅ Frequent Travelers & Commuters – Stay powered up on the go with a lightweight and high-capacity battery.

With consistent energy output and extended runtime, this battery enhances laptop usability and efficiency, making it a valuable addition to your tech setup.

To ensure optimal battery performance and longevity, follow these best practices:

✔ Charge Fully Before First Use – Allow the battery to reach 100% charge before using it for the first time.✔ Avoid Overcharging – Unplug the charger once the battery is fully charged to prevent unnecessary strain on battery cells.✔ Use a Genuine Dell Charger – Always use an original Dell power adapter for safe and efficient charging.✔ Keep the Battery Cool – Store and use your laptop in a well-ventilated area to prevent overheating.✔ Perform Regular Battery Calibration – Occasionally allow the battery to fully discharge and recharge to maintain accurate battery readings.✔ Store Properly When Not in Use – If storing for an extended period, keep the battery at 50% charge in a cool, dry place.

By following these simple maintenance tips, you can maximize battery life and ensure consistent performance over time.

✔ 100% Genuine Dell OEM Battery – Ensures compatibility, reliability, and durability.✔ High-Capacity Lithium-Ion Technology – Delivers extended battery life and improved power efficiency.✔ Advanced Safety Features – Protects against overheating, overcharging, and electrical failures.✔ Seamless Compatibility – Designed for Dell Latitude E-Series laptops.✔ Easy Installation – User-friendly, plug-and-play design for quick replacement.✔ Optimized Performance – Works perfectly with Dell’s power management system for accurate charge readings and energy efficiency.

The DELL 9JM71 11.4V 42Wh 3500mAh Laptop Battery is a genuine, high-performance replacement battery designed specifically for Dell Latitude laptops, including the Latitude 13 5320 (2-in-1), Latitude 7520, and Latitude 14 7420. This OEM-certified lithium-ion battery provides stable power output, extended runtime, and reliable performance, ensuring uninterrupted workflow for professionals, students, and frequent travelers.

If your current battery drains too quickly, fails to hold a charge, or requires constant plugging in, upgrading to the Dell 9JM71 replacement battery will restore your laptop’s mobility, efficiency, and long-lasting power. Engineered with advanced battery technology and multiple built-in safety features, this battery guarantees optimal energy management and superior durability.

Choosing an original Dell battery ensures maximum compatibility, efficiency, and durability. This 9JM71 battery meets Dell’s rigorous quality standards, offering:

✔ 100% compatibility with Dell Latitude 13 5320 (2-in-1), Latitude 7520, and Latitude 14 7420.✔ Reliable and stable power output, eliminating unexpected shutdowns or performance fluctuations.✔ Premium-grade lithium-ion cells, delivering long-lasting efficiency and an extended battery lifespan.

Unlike third-party or counterfeit batteries, this OEM Dell battery undergoes comprehensive safety testing to ensure safe and effective power delivery that meets Dell’s strict performance standards.

With a 42Wh capacity and 3500mAh power rating, this 11.4V lithium-ion battery provides extended usage time, making it perfect for:

• Business professionals who need reliable power for long work sessions.
• Students and researchers who require uninterrupted study and project completion.
• Remote workers and frequent travelers who need portable, long-lasting battery life.
• Multitaskers and content creators who use power-intensive applications.

This battery helps you reduce charging frequency and increase productivity, ensuring your Dell Latitude laptop operates efficiently throughout the day.

The Dell 9JM71 battery is built with high-quality lithium-ion cells, providing:

✔ Higher energy density, ensuring longer battery runtime per charge.✔ Lower self-discharge rate, allowing the battery to retain charge even when unused.✔ Long-lasting performance, maintaining power efficiency through hundreds of charge cycles.

With Dell’s advanced power management technology, this battery delivers consistent performance, minimal power loss, and optimized energy consumption, even under demanding workloads.

The Dell 9JM71 battery is precisely engineered to fit:

• Latitude 13 5320 (2-in-1)
• Latitude 7520
• Latitude 14 7420

• 9JM71
• 7FMXV

With an easy plug-and-play installation, replacing your old battery takes just a few minutes—allowing you to restore your laptop’s power capacity effortlessly.

This OEM Dell battery supports fast charging, allowing users to:✔ Recharge quickly and get back to work, gaming, or creative projects in no time.✔ Reduce downtime, ensuring uninterrupted productivity.

Dell prioritizes safety and durability, equipping this battery with multiple built-in protection mechanisms, including:

✔ Overcharge Protection – Prevents excessive charging, extending battery life.✔ Over-discharge Protection – Preserves battery health by preventing deep discharges.✔ Temperature Regulation – Maintains safe operating temperatures, preventing overheating.✔ Short-circuit Protection – Prevents electrical issues that could damage the battery or laptop.✔ Battery Swelling Prevention – Ensures structural integrity and long-term reliability.

These advanced safety features make the Dell 9JM71 battery a secure and durable power solution for Dell Latitude users.

If your laptop battery is no longer performing efficiently, upgrading to this Dell 9JM71 replacement battery offers:

✅ Extended Laptop Runtime – Work, browse, and stream for longer periods without frequent recharges.✅ Improved Laptop Performance – A fresh battery provides stable power delivery, improving speed and efficiency.✅ Greater Portability – Use your laptop freely without being dependent on a power outlet.✅ Reduced Risk of Unexpected Shutdowns – Prevent power failures that could result in data loss or file corruption.

By choosing a genuine Dell replacement battery, you restore your laptop’s original power efficiency and extend its usability.

To maximize the lifespan and performance of your Dell 9JM71 battery, follow these battery care tips:

• First Charge: Fully charge the battery to 100% before first use.
• Avoid Deep Discharges: Keep the battery level above 20% whenever possible.
• Calibrate Monthly: Perform a full discharge and recharge cycle once a month.

• Excessive heat reduces battery life, so avoid prolonged exposure to high temperatures.
• Use a cooling pad to maintain optimal temperature while performing heavy tasks.

• Always use a Dell-certified charger to ensure proper voltage and safe charging.
• Avoid third-party adapters, as they may cause inconsistent power delivery and battery damage.

• Keeping your laptop plugged in at 100% for long periods can degrade battery lifespan.
• Unplug the charger once the battery reaches full capacity.

• Regularly update your BIOS and battery drivers to ensure optimal power management and efficiency.

• Battery Type: Lithium-ion
• Cell Count: 3-Cell
• Capacity: 42Wh / 3500mAh
• Voltage: 11.4V
• Compatibility:
  • Dell Latitude 13 5320 (2-in-1), Latitude 7520, Latitude 14 7420
• Compatible Part Numbers: 9JM71, 7FMXV
• Fast Charging Support: Yes

The Dell Alienware 15 R1 R2 Original 8-Cell Laptop Battery (92Wh) is a high-capacity, OEM-certified replacement battery designed to power your gaming laptop with maximum efficiency and reliability. Specifically engineered for Alienware 15 R1 and R2 models, this 92Wh lithium-ion battery ensures extended gaming sessions, uninterrupted work, and reliable performance for content creation, streaming, or multitasking.

If your current battery drains too quickly, struggles to hold a charge, or forces you to stay plugged in, upgrading to this genuine Dell battery will restore your Alienware laptop’s mobility, performance, and power efficiency. Built to Dell’s strict quality standards, this battery provides long-lasting durability, safe power management, and optimized compatibility, ensuring a seamless gaming and computing experience.

Choosing an original Dell battery guarantees:✔ 100% compatibility with Dell Alienware 15 R1 and R2 models.✔ Safe and stable performance, preventing risks like overheating, swelling, or unexpected shutdowns.✔ Certified Dell quality, ensuring long-lasting battery health and efficiency.

Unlike third-party or counterfeit batteries, this OEM Dell replacement battery is engineered to deliver optimal power performance, specifically tuned for Alienware gaming laptops.

With a 92Wh capacity, this 8-cell lithium-ion battery ensures:

• Longer gaming sessions without frequent recharges.
• Smoother multitasking for professionals and content creators.
• Reliable power management, keeping your laptop running efficiently even on demanding tasks.

Whether you’re gaming, editing videos, or working on intensive applications, this battery delivers consistent and extended performance.

This high-quality lithium-ion battery is designed to offer:✔ Higher energy density, extending battery life per charge.✔ Lower self-discharge rate, ensuring the battery retains power even when not in use.✔ Long-lasting performance, maintaining efficiency through multiple charge cycles.

With Dell’s advanced battery technology, you can expect reliable power output and reduced energy loss, even under heavy usage.

The Dell Alienware 15 R1 R2 8-cell battery is specifically designed for:

• Alienware 15 R1
• Alienware 15 R2

• 191YN
• 2F3W1
• 410GJ

With a plug-and-play installation, replacing your old battery is simple and hassle-free—just remove the old battery, install this genuine Dell replacement, and restore your laptop’s power and efficiency.

This OEM Dell battery supports fast and efficient charging, allowing you to get back to gaming or work quickly. Less time charging means more time gaming—making it the perfect battery for hardcore gamers and professionals.

Dell prioritizes user safety and battery durability, equipping this battery with multiple built-in protection mechanisms to prevent:

✔ Overcharge & Over-discharge Protection – Prevents excessive charging or draining, ensuring longer battery life.✔ Temperature Regulation – Prevents overheating during gaming and heavy workloads.✔ Short-circuit Protection – Guards against electrical failures that could damage the laptop.✔ Battery Swelling Prevention – Ensures physical integrity and prevents long-term wear.

These safety features make the Dell Alienware 15 R1 R2 8-cell battery a durable and secure power solution for your gaming laptop.

If your Alienware 15 R1 or R2 battery no longer holds a charge, it’s time for an upgrade. This OEM Dell battery offers:

✅ Extended Laptop Runtime – Play, work, or stream longer without searching for a power outlet.✅ Improved Performance – A fresh battery delivers stable power output, improving laptop speed and efficiency.✅ Greater Portability – Game or work from anywhere without worrying about battery life.✅ Reduced Risk of Unexpected Shutdowns – Prevent power failures that could disrupt gaming or work.

By upgrading to a genuine Dell battery, you ensure consistent power, longer laptop usability, and a seamless gaming experience.

To maximize the lifespan and performance of your Dell Alienware 15 R1 R2 battery, follow these battery care tips:

• First Use: Fully charge the battery to 100% before first use.
• Avoid Deep Discharges: Keep the battery level above 20% whenever possible.
• Calibrate Monthly: Perform a full discharge and recharge cycle once a month to maintain battery accuracy.

• Avoid exposure to excessive heat, which can degrade battery life.
• Use a cooling pad for long gaming or work sessions.

• A genuine Dell power adapter ensures proper voltage and safe charging.
• Avoid third-party chargers, which may deliver inconsistent power and damage the battery.

• Leaving your laptop plugged in at 100% continuously can shorten battery lifespan.
• Unplug the charger once the battery is fully charged.

• Updating your BIOS and battery drivers enhances power management and efficiency.

• Brand: Dell (OEM Original)
• Battery Model: 191YN, 2F3W1, 410GJ
• Battery Type: Lithium-ion
• Cell Count: 8-Cell
• Capacity: 92Wh
• Voltage: 14.8V
• Compatibility:
  • Alienware 15 R1
  • Alienware 15 R2
• Fast Charging Support: Yes