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    • Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life
    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life
    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life
    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life
    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life
    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life
    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life
    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life

    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S Genuine 100% Life

    $44.99

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

    53.8Wh/4600mAh

    Brand

    YuYan

    Voltage

    11.58V

    Model No

    A3240

    Warranty

    12 months

    The Genuine Apple MacBook Air 13-inch M4 2025 A3240 Laptop Battery (0303S) is an OEM-quality replacement engineered for seamless compatibility and long-lasting performance. Featuring high-capacity lithium-ion cells, this battery ensures stable power, extended runtime, and reliable safety protection, making it the ideal choice for professionals, students, and everyday users.


    Key Features

    • High-Capacity Design – delivers long runtime and reliable performance

    • OEM Compatibility – fits MacBook Air 13" M4 2025 (A3240) precisely

    • Smart Battery Protection – safeguards against overcharging, overheating, and short circuits

    • Eco-Friendly Materials – RoHS-compliant, free of lead and mercury

    • 100% Genuine & Brand New – certified quality with full testing


    Safety & Reliability

    The 0303S battery integrates intelligent circuit protection for:

    •  Overcharge & over-discharge shut-off

    •  Temperature control for safe operation

    •  Balanced cell management for extended cycle life

    This ensures consistent power delivery and safe charging performance for your MacBook Air M4.


    Packaging & Shipping

    •  Secure anti-static and shockproof packaging

    •  Fast, trackable worldwide shipping

    •  Each battery undergoes strict testing before dispatch


    Compatibility Guide

     Compatible With:

    • MacBook Air 13-inch M4 2025 (A3240)

    ✔ Battery Part Number:

    • 0303S

    Not Compatible With:

    • MacBook Air M1 / M2 / M3 models

    • MacBook Pro series


    Why Choose This Genuine Apple A3240 Battery?

    • OEM-level quality for reliable long-term use

    • Smart safety protections for worry-free charging

    • Eco-friendly and compliant with international standards

    • 100% life, brand new, tested before shipping


    Compatible Apple Part Numbers
    A3240
    MC6T4LL/A
    MC6U4LL/A
    A3240 EMC 8781


    Compatible Apple Laptop Models
    MacBook Air M4 10 CPU/8 GPU 13 inch 2025
    MacBook Air 13 inch M4 2025
    MacBook Air M4 10 CPU/10 GPU 13 inch 2025
    MacBook Air 2025 M4

     

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    Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery 0303S – FAQ

     

    1. What is the Genuine Apple MacBook Air 13 M4 2025 A3240 OEM Laptop Battery (0303S)?

    The A3240 OEM Laptop Battery (0303S) is the original, genuine battery designed specifically for the Apple MacBook Air 13-inch M4 2025 model. It ensures 100% compatibility, long-lasting power performance, and the same high quality as the factory-installed battery.

     

    2. Is this battery compatible with my MacBook Air?

    Yes. This battery is compatible with the Apple MacBook Air 13" M4 (2025) A3240 model. Always double-check your MacBook’s model number (found on the underside of your laptop or in “About This Mac”) before purchase to ensure compatibility.

     

    3. What is the battery capacity and performance?

    Model Number: A3240 (OEM)

    Part Code: 0303S

    Type: Genuine Apple Lithium-polymer battery

    Condition: 100% Brand New, Genuine OEM

    Battery Life: Optimized for long usage with reliable charge cycles, offering the same performance as your original MacBook Air M4 2025 battery.

     

    4. How do I know if my MacBook Air needs a battery replacement?

    You may need a replacement if you notice:

    Rapid battery drain even after full charging.

    MacBook shutting down unexpectedly.

    Battery not charging or only charging partially.

    “Service Recommended” warning in macOS battery health settings.

     

    5. Is this battery safe to use?

    Yes. This genuine Apple OEM battery includes built-in safety protections against overcharging, overheating, and short-circuiting. Using a genuine replacement ensures both performance stability and device safety.

     

    6. Can I install the battery myself?

    If you have experience with electronics, you can replace the battery using the proper tools. However, Apple MacBook batteries are glued in and may require special tools for safe removal. For best results, we recommend professional installation to avoid damaging internal components.

     

    7. How long does the Genuine MacBook Air M4 2025 battery last?

    On average, this battery can last 1000+ charge cycles under normal usage. With proper care, you can expect years of reliable performance before needing another replacement.

     

    8. Does the battery come with a warranty?

    Yes. Genuine OEM Apple batteries typically include a 12-month warranty against manufacturing defects. Always confirm with your seller for warranty coverage details.

     

    9. Why choose a genuine OEM battery over third-party options?

    100% compatibility with your MacBook Air M4 2025 A3240.

    Reliable power performance and longer lifespan.

    Built-in Apple safety standards.

    Maintains the original macOS battery health monitoring functions.

     

    10. Where can I buy the Genuine Apple MacBook Air 13 M4 2025 A3240 Battery (0303S)?

    You can purchase this genuine OEM battery from authorized Apple service providers, certified resellers, or trusted online marketplaces that guarantee authenticity. Always avoid counterfeit or low-quality replacements, as they may damage your MacBook.

     

    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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