Lenovo ThinkPad E490s Battery: Your Complete Replacement Guide

Estimated reading time: 6 minutes

• Model Number: L18C3P51
• Expected Runtime: Up to 6 hours
• Replacement: Integrated design requires disassembly
• Pricing: OEM typically $60–100; third-party options less than $50
• Warranty: 12–24 months for genuine parts

Table of Contents

• Understanding the Lenovo ThinkPad E490s Battery
• Replacing the Lenovo ThinkPad E490s Battery
• Warranty and Purchase Tips
• User Experience Insights
• Maintenance and Troubleshooting
• FAQ

Understanding the Lenovo ThinkPad E490s Battery

Battery Specifications

The heart of your device lies in its battery, and for the Lenovo ThinkPad E490s, the following specifications are critical:

• Model Number: The official part number for the Lenovo ThinkPad E490s battery is L18C3P51.
• Chemistry: This battery utilizes Lithium-ion technology and is integrated within the laptop.
• Voltage/Capacity: The battery has a voltage rating of 11.25V and a capacity of 42Wh (3.65Ah).
• Expected Runtime: Under ideal usage conditions, the battery can provide up to 6 hours of productivity.
• Rapid Charge Technology: This battery supports rapid charging, allowing you to charge it to approximately 80% in just one hour with the included 65W adapter.

Compatibility

When replacing your battery, ensure it fits your model perfectly. The L18C3P51 battery is:

• Direct Replacement: This part is 100% compatible with the ThinkPad E490s.
• Third-Party Options: Several retailers offer compatible third-party replacements for both the E480s and E490s.

Performance and Battery Health

To ensure a long life for your Lenovo ThinkPad E490s battery, consider the following tips:

• Health Tips: Avoid deep discharges and prolonged exposure to high temperatures.
• Degradation Expectations: Lithium-ion batteries typically retain about 80% of their original capacity after around 300-500 full charge cycles.

Signs of Battery Failure

Recognizing battery failure indicators allows you to take timely action. Be aware of the following symptoms:

• Decreased battery life and runtime
• Overheating during charge cycles
• Swelling or physical deformities
• Inconsistent battery percentage reporting

Replacing the Lenovo ThinkPad E490s Battery

Replacement Guide

Replace your ThinkPad’s battery with care. Note that the battery is integrated, meaning it’s not a user-replaceable component without some technical skill:

• Non-Removable Design: You’ll need to disassemble the base cover of your laptop. This task is considered intermediate-level.
• Official Guidance: Lenovo provides comprehensive video tutorials on how to disable the built-in battery.

Step-by-Step Instructions

1. Power Down: Ensure your device is completely powered off and disconnected from any power source.
2. Remove the Back Cover: Use a screwdriver to carefully detach the base cover.
3. Disconnect the Battery: Locate the battery connection and carefully disconnect it from the motherboard.
4. Install the New Battery: Position the new battery in place and connect it securely.
5. Reassemble: Replace the back cover and screws, then power on your laptop.

For detailed guidance, check Lenovo’s official support resources here.

Pricing

When purchasing a replacement battery, here’s what to expect:

• OEM Replacement Battery Cost: Genuine L18C3P51 batteries typically range from $60 to $100.
• Third-Party Options: These might be available for less than $50, but proceed with caution as quality can vary widely.

Warranty and Purchase Tips

• Warranty Information: Most genuine and reliable third-party batteries come with a 12 to 24-month warranty.
• Beware of Counterfeits: Purchasing from unauthorized sellers can lead to quality issues and safety hazards.

User Experience Insights

User feedback on the Lenovo E490s battery generally reflects satisfaction with runtime and performance. However, here are some common experiences:

• General Feedback: The original battery typically supports several hours of productivity under normal conditions.
• Replacement Experiences: Users often find that OEM batteries last longer than cheaper third-party replacements.
• Common Complaints: Users sometimes notice a decrease in battery life as the cycles accumulate.

Maintenance and Troubleshooting

To prolong the life of your new battery and keep performance optimal:

• Battery Calibration: Occasionally, let your battery discharge completely and then fully recharge.
• Keep Updated: Maintain both system and battery firmware through Lenovo Vantage.
• Monitor Health: Regularly check your battery health in system settings.

FAQ

• What do I do if my Lenovo ThinkPad E490s battery fails? Check for signs of damage and consider a replacement if necessary.
• How long does a Lenovo ThinkPad E490s battery last? Typically up to 6 hours under normal usage conditions.
• Where can I buy a replacement battery? Reliable options include Lenovo’s official store and reputable online retailers.
• How can I tell if my battery is degraded? Monitor battery performance and consider replacing it when it drops below 80% capacity.

If you’re encountering battery issues with your Lenovo ThinkPad E490s, don’t delay! Ensuring a reliable power source is crucial for your productivity. Check out the Lenovo L18C3P51 Battery for your E490s today and experience the power and performance you deserve.

If you need further assistance or have questions about specific battery sellers, be sure to consult Lenovo’s official support resources or reach out to our knowledgeable customer service team.

Sam

I’m a tech writer from Delhi who lives near Nehru Place laptop market. This gives me daily access to parts, vendors, and repair insights that I share through my blog. I help people fix their laptops by explaining problems simply and showing where to find quality replacement parts.