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    • Genuine RJ40G Battery for Dell Latitude 5420 5520 Precision 3560 01K2CF 075X16
    Genuine RJ40G Battery for Dell Latitude 5420 5520 Precision 3560 01K2CF 075X16
    Genuine RJ40G Battery for Dell Latitude 5420 5520 Precision 3560 01K2CF 075X16
    Genuine RJ40G Battery for Dell Latitude 5420 5520 Precision 3560 01K2CF 075X16
    Genuine RJ40G Battery for Dell Latitude 5420 5520 Precision 3560 01K2CF 075X16

    Genuine RJ40G Battery for Dell Latitude 5420 5520 Precision 3560 01K2CF 075X16

    $56.99

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

    3941mAh/63.2Wh

    Brand

    YuYan

    Voltage

    15.2V

    Model No

    RJ40G 075X16 WY9DX

    Warranty

    12 Months

    The Genuine RJ40G 15.2V 63Wh 3941mAh Battery is the ideal replacement or backup power solution for your Dell Latitude and Precision laptops. Engineered for reliability, this high-quality lithium-ion battery ensures stable performance and extended runtime, making it perfect for professionals and students who rely on their laptops daily.

     

    Compatible Models:

    • Dell Latitude 5420

    • Dell Latitude 5520

    • Dell Precision 3560

     

    Compatible Part Numbers:

    • RJ40G

    • 01K2CF

    • 075X16

     

    Specifications:

    • Voltage: 15.2V

    • Capacity: 63Wh / 3941mAh

    • Battery Type: 4-cell Li-ion

    • Condition: Brand new, 100% genuine

    With its robust design and high efficiency, the RJ40G battery provides the dependable power you need to keep your Dell laptop running smoothly. Whether you are replacing a worn-out battery or upgrading for longer unplugged use, this genuine battery guarantees both compatibility and safety.

     

    4. FAQ

     

    Q1: Is this battery original or aftermarket?
    A1: This is a genuine OEM RJ40G battery, designed specifically for Dell laptops for maximum compatibility and performance.

     

    Q2: How do I check compatibility with my laptop?
    A2: You can confirm compatibility by checking your current battery’s part number (RJ40G, 01K2CF, or 075X16) or ensuring your laptop model is Dell Latitude 5420, 5520, or Precision 3560.

     

    Q3: What is the average battery life per charge?
    A3: Depending on usage and settings, the RJ40G battery typically lasts 4–6 hours on a full charge.

     

    Q4: Does the battery come with a warranty?
    A4: Yes, all our genuine Dell batteries come with a 12-month warranty against defects in materials and workmanship.

     

    Q5: Can I replace this battery myself?
    A5: Yes, the RJ40G battery is user-replaceable. Simply remove the bottom cover of your laptop, disconnect the old battery, and install the new one.

     

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    Genuine 15.2V 63Wh 3941mAh RJ40G Battery for Dell Latitude 5420 5520 Precision 3560 – FAQ

     

    1. What models are compatible with the Genuine RJ40G 15.2V 63Wh battery?

    This RJ40G replacement battery is designed for Dell Latitude 5420, Dell Latitude 5520, and Dell Precision 3560 laptops. It also replaces OEM part numbers 01K2CF and 075X16. Always check your existing battery’s model number before ordering to ensure compatibility.

     

    2. What is the battery capacity and voltage?

    The RJ40G battery has a capacity of 63Wh / 3941mAh and operates at 15.2V. This provides long-lasting performance for business and everyday use, making it ideal for both productivity and mobility.

     

    3. Is this an original or aftermarket battery?

    This is a genuine replacement RJ40G battery, manufactured to meet Dell’s original quality standards. It offers reliable performance, safety features, and a perfect fit for supported Dell models.

     

    4. How do I know if this battery will fit my laptop?

    Check the label on your current battery for one of these part numbers: RJ40G, 01K2CF, or 075X16. If your laptop model is Latitude 5420, Latitude 5520, or Precision 3560, this battery will be fully compatible.

     

    5. How long does the RJ40G battery last on a full charge?

    Battery life depends on usage, settings, and applications. On average, the RJ40G provides 5–8 hours of runtime, depending on workload. For light tasks like browsing or word processing, it can last longer.

     

    6. Does the battery have built-in safety features?

    Yes. The RJ40G battery includes protection against overcharge, overheating, and short-circuits, ensuring safe and stable performance for your Dell laptop.

     

    7. How should I care for my new laptop battery?

    Charge the battery fully before first use.

    Avoid keeping the laptop plugged in at 100% for extended periods.

    Store the battery in a cool, dry place if not used for a long time.

    Perform partial discharge/charge cycles to extend lifespan.

     

    8. What are the package contents?

    1 × Genuine RJ40G 15.2V 63Wh Battery

    User guide for installation and care instructions

     

    9. Is installation easy?

    Yes. The RJ40G battery is designed for a direct fit, requiring only basic tools to install. If you are not comfortable replacing it yourself, professional installation is recommended.

     

    10. Why choose the Genuine RJ40G replacement battery?

    · 

    Perfect fit for Dell Latitude 5420, 5520, Precision 3560

    · 

    · 

    Genuine OEM quality and reliability

    · 

    · 

    Long battery life with 63Wh capacity

    · 

    · 

    Safety-certified with overcharge and overheating protection

    · 

     

    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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