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    • Genuine A1527 A1705 Laptop Battery for MacBook Retina 12" A1534 Early 2015 2016 Mid 2017 EMC 2746 2991 3099 MK4M2LL/A MJY32LL/A MF855LL/A MK4N2LL/A MJY42LL/A MF855 MF865LL/A MNYG2LL/A MLHA2LL/A 7.55V 39.71Wh
    Genuine A1527 A1705 Laptop Battery for MacBook Retina 12" A1534 Early 2015 2016 Mid 2017 EMC 2746 2991 3099 MK4M2LL/A MJY32LL/A MF855LL/A MK4N2LL/A MJY42LL/A MF855 MF865LL/A MNYG2LL/A MLHA2LL/A 7.55V 39.71Wh
    Genuine A1527 A1705 Laptop Battery for MacBook Retina 12" A1534 Early 2015 2016 Mid 2017 EMC 2746 2991 3099 MK4M2LL/A MJY32LL/A MF855LL/A MK4N2LL/A MJY42LL/A MF855 MF865LL/A MNYG2LL/A MLHA2LL/A 7.55V 39.71Wh
    Genuine A1527 A1705 Laptop Battery for MacBook Retina 12" A1534 Early 2015 2016 Mid 2017 EMC 2746 2991 3099 MK4M2LL/A MJY32LL/A MF855LL/A MK4N2LL/A MJY42LL/A MF855 MF865LL/A MNYG2LL/A MLHA2LL/A 7.55V 39.71Wh
    Genuine A1527 A1705 Laptop Battery for MacBook Retina 12" A1534 Early 2015 2016 Mid 2017 EMC 2746 2991 3099 MK4M2LL/A MJY32LL/A MF855LL/A MK4N2LL/A MJY42LL/A MF855 MF865LL/A MNYG2LL/A MLHA2LL/A 7.55V 39.71Wh
    Genuine A1527 A1705 Laptop Battery for MacBook Retina 12" A1534 Early 2015 2016 Mid 2017 EMC 2746 2991 3099 MK4M2LL/A MJY32LL/A MF855LL/A MK4N2LL/A MJY42LL/A MF855 MF865LL/A MNYG2LL/A MLHA2LL/A 7.55V 39.71Wh

    Genuine A1527 A1705 Laptop Battery for MacBook Retina 12" A1534 Early 2015 2016 Mid 2017 EMC 2746 2991 3099 MK4M2LL/A MJY32LL/A MF855LL/A MK4N2LL/A MJY42LL/A MF855 MF865LL/A MNYG2LL/A MLHA2LL/A 7.55V 39.71Wh

    $49.99

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

    5623mAh

    Brand

    YuYan

    Voltage

    7.55V

    Model No

    A1527

    Warranty

    12 months

    The Genuine A1527 / A1705 Laptop Battery is the ideal replacement for the Apple MacBook Retina 12-inch A1534 (Early 2015, 2016, Mid 2017). Featuring a 7.55V 39.71Wh lithium-polymer design, this battery delivers reliable performance, long-lasting runtime, and perfect compatibility with your original Apple battery.

    Key Features

    • 7.55V 39.71Wh High-Capacity Design – supports extended use for work, travel, and entertainment

    • Perfect Compatibility – engineered for MacBook Retina 12" A1534 (2015–2017)

    • OEM Equivalent Standard – matches or exceeds Apple’s original A1527 / A1705 specifications

    • Advanced Protection Circuitry – safeguards against overcharging, overheating, over-discharging, and short circuits

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

    Safety & Reliability

    This A1527 / A1705 replacement battery integrates a smart power management circuit that regulates temperature and voltage for safe charging and efficient energy use, ensuring long battery life.

    Packaging & Shipping

    Each battery is individually packed with anti-static protection and shock-absorbing foam to prevent damage during transit. Every unit passes a rigorous quality control process before shipment.

    Compatibility Guide

     Compatible Models:

    • MacBook Retina 12" A1534 (Early 2015, 2016, Mid 2017)

     Compatible EMC Numbers:

    • EMC 2746 / EMC 2991 / EMC 3099

    Compatible Part Numbers & Model References:

    • A1527 / A1705

    • MK4M2LL/A / MJY32LL/A / MF855LL/A / MK4N2LL/A / MJY42LL/A / MF865LL/A / MNYG2LL/A / MLHA2LL/A

     Not compatible with MacBook Air or MacBook Pro models.

     

    Compatible Apple Part Numbers

     

    A1527

    A1534 EMC 2991

    A1534 EMC 3099

    A1705

    A1534 EMC 2746

     

    Compatible Apple Laptop Models

     

    MacBook 12 inch Retina A1534(Early 2016)

    MacBook 12 inch Retina A1534(EMC 2746)

    MacBook 12 inch Retina MF855LL/A

    MacBook 12 inch Retina MF865LL/A*

    MacBook 12 inch Retina MLHA2LL/A

    MacBook Air 12" Retina A1534 (Early 2015)

    MacBook Air 12-inch Retina A1534 (Early 2016)

    MacBook Core I7 1.4GHZ 12 inch Retina A1534(EMC 3099)

    MacBook Core M 1.3GHZ 12 inch Retina A1534(EMC 2746)

    MacBook Core M3 1.1GHZ 12 inch Retina A1534(EMC 2991)

    MacBook Core M5 1.2GHZ 12 inch Retina A1534(EMC 2991)

    MF855

    MJY32

    MJY32LL/A

    MLHA2LL/A

    MNYG2LL/A

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    Genuine A1527 / A1705 Laptop Battery for MacBook Retina 12-inch A1534 (2015–2017) – FAQ

     

    1. What is the Genuine A1527 / A1705 Laptop Battery?

    The Genuine A1527 / A1705 battery is the official replacement battery designed for the MacBook Retina 12-inch A1534 series (Early 2015, Early 2016, and Mid 2017). It features a 39.71Wh capacity at 7.55V, ensuring reliable performance and the same endurance as the original Apple-installed battery.

     

     

    2. Which MacBook models are compatible with this battery?

    This battery is specifically compatible with:

    MacBook Retina 12-inch (A1534)

    Years: Early 2015, Early 2016, Mid 2017

    EMC Codes: 2746, 2991, 3099

    Part Numbers:

    A1527

    A1705

    Compatible Apple Model Numbers:

    MK4M2LL/A, MJY32LL/A, MF855LL/A, MK4N2LL/A

    MJY42LL/A, MF865LL/A, MNYG2LL/A, MLHA2LL/A

     

     

    3. What are the specifications of the A1527 / A1705 MacBook battery?

    Battery Model: A1527 / A1705

    Device Compatibility: MacBook Retina 12" A1534 (2015–2017)

    Voltage: 7.55V

    Capacity: 39.71Wh

    Battery Type: Lithium Polymer (Li-Polymer)

    Design: Ultra-thin to match the slim MacBook Retina profile

     

     

    4. How do I know if my MacBook Retina uses the A1527 / A1705 battery?

    You can check by:

    Turning your MacBook over and confirming the model number A1534 is printed on the bottom case.

    Verifying your EMC code (2746, 2991, or 3099).

    Checking your MacBook’s original battery model under System Report → Power section in macOS.

     

     

    5. Why choose a genuine A1527 / A1705 battery instead of a cheaper alternative?

    Full compatibility with all A1534 MacBook Retina models

    Optimized charging cycles for maximum lifespan

    Built-in safety features (overheating, overcharging, and short-circuit protection)

    Superior quality compared to third-party replacements

     

     

    6. How long does the A1527 / A1705 battery last per charge?

    A brand-new genuine battery provides up to 8–10 hours of usage depending on your tasks, screen brightness, and apps running. This performance is comparable to a factory-new MacBook Retina.

     

     

    7. How many charge cycles can I expect?

    The genuine A1527 / A1705 battery supports up to 1,000 full charge cycles, while maintaining up to 80% of its original capacity under normal usage.

     

     

    8. Can I replace the A1527 / A1705 battery myself?

    Replacing the battery in the MacBook Retina 12" is not simple, as the battery is glued to the chassis. We recommend professional installation to avoid damage to your device.

     

     

    9. Does the A1527 / A1705 battery come with a warranty?

    Yes, most genuine A1527 / A1705 replacement batteries are covered by a 12-month warranty against defects in materials or performance. Always confirm warranty terms with your seller.

     

    10. Where can I buy a genuine A1527 / A1705 MacBook Retina battery?

    You can purchase from:

    Apple Authorized Service Providers

    Reputable online retailers specializing in MacBook parts

    Verified third-party sellers with strong customer reviews

     

     

    Summary:
    The Genuine A1527 / A1705 Laptop Battery is the correct replacement for MacBook Retina 12-inch A1534 (2015–2017). With 7.55V power, 39.71Wh capacity, and Apple-grade quality, it ensures your slim MacBook Retina stays portable, powerful, and reliable.

    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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