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    • Genuine L18C4PF3 Laptop Battery Compatible for Lenovo Ideapad Flex-14IML Flex-14IWL Flex-14API C340-14API C340-14IML C340-14IWL S540-14API S540-14IML S540-14IWL L18M4PF3 L18M4PF4 L18C4PF4 5B10T09081
    Genuine L18C4PF3 Laptop Battery Compatible for Lenovo Ideapad Flex-14IML Flex-14IWL Flex-14API C340-14API C340-14IML C340-14IWL S540-14API S540-14IML S540-14IWL L18M4PF3 L18M4PF4 L18C4PF4 5B10T09081
    Genuine L18C4PF3 Laptop Battery Compatible for Lenovo Ideapad Flex-14IML Flex-14IWL Flex-14API C340-14API C340-14IML C340-14IWL S540-14API S540-14IML S540-14IWL L18M4PF3 L18M4PF4 L18C4PF4 5B10T09081
    Genuine L18C4PF3 Laptop Battery Compatible for Lenovo Ideapad Flex-14IML Flex-14IWL Flex-14API C340-14API C340-14IML C340-14IWL S540-14API S540-14IML S540-14IWL L18M4PF3 L18M4PF4 L18C4PF4 5B10T09081
    Genuine L18C4PF3 Laptop Battery Compatible for Lenovo Ideapad Flex-14IML Flex-14IWL Flex-14API C340-14API C340-14IML C340-14IWL S540-14API S540-14IML S540-14IWL L18M4PF3 L18M4PF4 L18C4PF4 5B10T09081

    Genuine L18C4PF3 Laptop Battery Compatible for Lenovo Ideapad Flex-14IML Flex-14IWL Flex-14API C340-14API C340-14IML C340-14IWL S540-14API S540-14IML S540-14IWL L18M4PF3 L18M4PF4 L18C4PF4 5B10T09081

    $58.99

    In stock, item location: Commerce, CA.ETA:3-5 business days to USPS
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    Battery Capacity

    45Wh

    Brand

    YuYan

    Voltage

    15.36V

    Model No

    L18C4PF3

    Warranty

    12 Months

    The Genuine L18C4PF3 Laptop Battery is the perfect replacement power source for a wide range of Lenovo IdeaPad models, ensuring reliable performance and extended laptop life. Built to meet or exceed original specifications, this high-quality lithium-ion battery provides stable power and long-lasting charge cycles.

     

    Compatible Models:

    • Lenovo IdeaPad Flex-14IML, Flex-14IWL, Flex-14API

    • Lenovo IdeaPad C340-14API, C340-14IML, C340-14IWL

    • Lenovo IdeaPad S540-14API, S540-14IML, S540-14IWL

     

    Replacement Part Numbers:

    • L18M4PF3, L18M4PF4, L18C4PF4, 5B10T09081

     

    Key Features:

    • Genuine and brand new replacement battery

    • Reliable 4-cell Li-ion design for steady power output

    • Safe and durable with multiple protection circuits

    • Perfect fit and easy installation, just like the original

    Restore your Lenovo IdeaPad’s mobility with the Genuine L18C4PF3 Battery — the ideal solution for users who need dependable performance at home, work, or on the go.

     


    FAQ

     

    Q1: Is the L18C4PF3 battery compatible with Lenovo Flex 14 series?
    Yes, this battery is fully compatible with Lenovo IdeaPad Flex-14IML, Flex-14IWL, and Flex-14API models.

     

    Q2: Can I use this battery for Lenovo C340 and S540 laptops?
    Absolutely. It works with C340-14API, C340-14IML, C340-14IWL, as well as S540-14API, S540-14IML, and S540-14IWL series.

     

    Q3: What replacement part numbers does this battery support?
    It supports L18M4PF3, L18M4PF4, L18C4PF4, and 5B10T09081.

     

    Q4: How do I know if my current battery needs replacement?
    If your laptop shuts down unexpectedly, has significantly reduced run time, or fails to charge properly, it’s time to replace the battery.

     

    Q5: Is this an original Lenovo battery?
    Yes, it’s a genuine replacement battery designed for Lenovo laptops, ensuring safety, quality, and performance.

    Compatible Models (use "Ctrl+F to find your model quickly")

     

    • Fit for Lenovo IdeaPad S540-14API Series
    • Fit for Lenovo IdeaPad Flex-14IML / Flex-14IWL / FLEX-14API Series
    • Fit for Lenovo IdeaPad S540-14IWL / S540-14IWL Touch Series
    • Fit for Lenovo IdeaPad S540-14IML/ S540-14IML Touch Series
    • Fit for Lenovo Ideapad C340-14API / C340-14IML / C340-14IWL Series:

     

    C340-14API-032 / C340-14API-199 / C340-14API-258 / C340-14API-301 / C340-14API-302 / C340-14API 3200u / C340-14API-769 / C340-14API-772 / C340-14API-902 / 2)C340-14API-81n60088ta / C340-14API-81n600d2ge / C340-14API-81n6006sge / C340-14API-81n6004uge / C340-14API-81n6004xpb / C340-14API-81n60064ta / C340-14API-81n6009jsc / C340-14API-81n6006tge / C340-14API-81n60030fr

     

    Replacement for Part Number:

    L18C4PF3 / L18M4PF3 / L18M4PF4 / L18C4PF4 / 5B10T09077 / 5B10T09080 / 5B10W67417 / 5B10W67415 / 5B10W67221 / 5B10T09081 / 5B10T09079 / 5B10W67194

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    Genuine L18C4PF3 Laptop Battery FAQ – Compatible with Lenovo Ideapad Flex & S540 Series

     

    1. What is the Genuine L18C4PF3 Laptop Battery?

    The Genuine L18C4PF3 is a high-quality replacement laptop battery designed for Lenovo Ideapad Flex, C340, and S540 series notebooks. It provides reliable power, consistent performance, and long-lasting usage compared to generic alternatives.

     

    2. Which laptop models are compatible with this battery?

    This battery is compatible with several Lenovo models, including:

    Lenovo Ideapad Flex Series: Flex-14IML, Flex-14IWL, Flex-14API

    Lenovo C340 Series: C340-14API, C340-14IML, C340-14IWL

    Lenovo S540 Series: S540-14API, S540-14IML, S540-14IWL

    It also works as a replacement for related part numbers: L18M4PF3, L18M4PF4, L18C4PF4, 5B10T09081.

     

    3. What are the specifications of the L18C4PF3 battery?

    Battery Type: Li-ion rechargeable

    Voltage: 15.36V

    Capacity: Typically around 52.5Wh / 3400mAh (varies slightly by batch)

    Cells: 4-cell design

    Condition: 100% genuine and brand new

     

    4. How do I know if this battery is right for my laptop?

    To ensure compatibility:

    Check your laptop’s model number (e.g., Flex-14IML or S540-14IWL).

    Confirm the original battery part number (e.g., L18C4PF3, L18M4PF3, or 5B10T09081).

    Match the voltage and capacity specifications with your current battery.

    If all three match, this battery is the correct replacement.

     

    5. How long does the Genuine L18C4PF3 battery last on a full charge?

    On average, this battery provides 4–6 hours of runtime, depending on your laptop’s configuration, screen brightness, and workload. With proper care, it will maintain strong performance over hundreds of charge cycles.

     

    6. How can I extend the life of my new Lenovo L18C4PF3 battery?

    Avoid overcharging (unplug once fully charged).

    Keep the laptop and battery in a cool, dry place.

    Perform occasional full discharge and recharge cycles.

    Use genuine Lenovo or certified replacement chargers.

     

    7. Is this a genuine Lenovo battery?

    Yes, the L18C4PF3 battery is a genuine Lenovo-compatible replacement that meets OEM specifications. It offers the same safety, reliability, and performance as the original factory battery.

     

    8. How do I replace the L18C4PF3 battery?

    Shut down your laptop and disconnect the charger.

    Remove the back cover using the proper screwdriver.

    Disconnect the old battery from the motherboard.

    Insert the new battery, align it, and reconnect the cable.

    Reinstall the cover and power on your laptop.

    Tip: If you’re not comfortable opening your laptop, seek professional assistance.

     

    9. Does the battery come with a warranty?

    Most sellers provide a 12-month warranty and a 30-day money-back guarantee for the L18C4PF3 laptop battery. Always check seller details before purchasing.

     

    10. Where can I buy the Genuine L18C4PF3 laptop battery?

    You can purchase this battery from trusted online retailers, Lenovo parts distributors, and certified electronics stores. Be sure to verify compatibility before ordering.

     

    Focus on working not charging… 

    “3 years ago I ordered what I thought was a simple replacement battery for my laptop. Within weeks it overheated, lost charge quickly, and even damaged my charger port. I was shocked! I knew cheap batteries were risky, but I had no idea how quickly they could fail — and how dangerous they could be for my laptop. That experience inspired me to focus on reliable, safe, and long-lasting power solutions that people can truly trust.”

    Our world has become extremely dependent on laptops, yet too many people rely on cheap, low-quality batteries and adapters that fail quickly and create unnecessary e-waste. Many laptop users are aware of the frustration — shorter lifespans, overheating, constant replacements — and are searching for better solutions. But if we want to protect our devices, our data, and even our environment, we need to start choosing safer, longer-lasting, and more reliable power options.”

    CEO

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    Why YuYan?

    1. Where reliability meets performance

    UL (Underwriters Laboratories) and CE (Conformité Européenne) are globally recognized organizations that set the benchmark for product safety, performance, and compliance. Our laptop batteries and adapters are rigorously tested and certified to meet UL and CE standards, ensuring they are safe, reliable, and compatible with your device. This means every product you purchase from us has passed strict safety checks and delivers dependable power you can trust.

    2. UL & CE Certified Power Solutions

    Our laptop batteries and adapters are rigorously tested and certified to meet UL (Underwriters Laboratories) and CE (Conformité Européenne) safety standards. These certifications ensure that every product delivers consistent performance, protects against overheating, overcharging, and short circuits, and is fully compliant with international regulations. With UL & CE certified power solutions, you can trust that your laptop will run safely, efficiently, and without interruptions — at home, at work, or on the go.

    3. Sleek & Minimal Laptop Power

    Designed to complement your laptop, our batteries and adapters feature a sleek, modern look while delivering reliable power. Compact, minimal, and stylish — they fit perfectly into your workspace or on the go.

    4. Make Our Power Solutions Yours

    Don’t settle for unreliable batteries or adapters. Choose our certified, long-lasting power solutions and make them an essential part of your laptop experience — at home, at work, or on the go.

    5. Engineered for Compatibility: Powering Your Ecosystem.

    This addresses a major pain point. Customers need to know the charger works seamlessly not just with their laptop, but with their phone, tablet, and other USB-C devices. It positions YuYan as a unified power solution for all their tech, reducing cable clutter and complexity.

    6.Built to Last: Durability You Can Depend On.

    This directly counters the fear of buying a cheap product that breaks. It highlights quality construction (e.g., reinforced cables, robust connectors, premium materials) and implies a longer product lifecycle, which is a strong value argument over cheaper, disposable alternatives.

    7.Intelligent Charging: Protect Your Device's Battery Health.

    This showcases advanced technology. Modern chargers with intelligent chipsets can regulate voltage and current to avoid overcharging and overheating, which degrades batteries. This shows YuYan cares about protecting the customer's much more expensive laptop investment.

    8.Eco-Conscious Innovation: Responsible Power.

    This appeals to the environmentally conscious consumer. It can encompass energy-efficient operation (less wasted energy), the use of recyclable materials in packaging or products, and adherence to environmental standards like RoHS. This builds a positive, modern brand image.

    9.Globally Ready: A Worldwide Travel Companion.

    A huge benefit for travelers. If YuYan's chargers support 100-240V input voltage and come with interchangeable plugs (or a versatile design), this is a massive selling point. It tells the global citizen that this is the only charger they need to pack.

    For a Sustainable Laptop Future

    At YuYan, it all starts with a vision: to create reliable, safe, and long-lasting power solutions for laptops everywhere.

    Did you know that millions of low-quality laptop batteries and adapters fail every year, creating unnecessary e-waste and safety hazards? Immediate action needs to be taken to protect both your devices and the environment.

     

    That’s why YuYan was created — to provide high-quality, certified batteries and adapters that are safe, durable, and eco-conscious. We believe the best way to make a positive change is through the products people use every day. A portion of every purchase goes directly to supporting electronic waste reduction initiatives and responsible recycling programs.

     

    By choosing our products, you’re not only ensuring reliable power for your laptop — you’re helping reduce e-waste, protect the environment, and support a sustainable technology future. Thank you for making a difference!

    People Usually Ask

    1: How do I know if this battery/adapter fits my laptop?

    Please check your laptop model or the part number on your original battery/adapter. A full compatibility list is provided in the item description. If you are not sure, feel free to contact us before purchase.

    2: Is this an original (OEM) product?

    No, our products are brand-new high-quality replacement batteries/adapters, fully compatible with the original manufacturer’s specifications. All items are CE / FCC / RoHS certified.

    3: Does the voltage/capacity have to match exactly?

    Voltage (V) must match within ±0.5V of your original battery.

    Capacity (mAh/Wh) can be different: a higher capacity means longer runtime but may be slightly heavier.

    4: Do your batteries have a memory effect?

    No. Our batteries use Grade A Lithium-Ion/Polymer cells and are free from memory effect. You can charge or discharge at any time.

    5: Can I use an adapter with higher amperage or wattage?

    The voltage must match (e.g., 19V adapter for a 19V laptop).

    The amperage (A) and wattage (W) can be equal or higher, but not lower.

    6: How long is the battery lifespan?

    Typically 500–800 charge cycles, which is about 2–4 years under normal usage.

    7. How should I care for my battery?

    Avoid extreme heat or cold.

    Do not leave it plugged in for months without use.

    For long-term storage, keep the battery at 40–60% charge in a cool, dry place.

    8. Why does the battery arrive with partial charge?

    For shipping safety, all batteries are shipped with 30–60% charge. This is normal. Please fully charge the battery before first use..

    9. Do you provide warranty?

    Yes. All our batteries and adapters come with a 12-month warranty. If there is any quality issue, we offer replacement or refund.

    10. Don’t they cut a lot of trees to make these still?

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