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    • Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A
    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A

    Genuine A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A

    $47.99

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

    77.5Wh

    Brand

    YuYan

    Voltage

    10.95V

    Model No

    A1321

    Warranty

    12 months

    The Genuine A1321 Laptop Battery is a reliable replacement for the Apple MacBook Pro 15-inch (Mid 2009 & 2010, A1286) models. Featuring premium lithium-ion cells, this battery provides long-lasting power, consistent performance, and complete compatibility with your original Apple battery.

    Key Features

    • High Capacity Lithium-Ion Cells – extended run time for daily use and professional tasks

    • Perfect Compatibility – designed for MacBook Pro 15" A1286 (Mid 2009 & 2010 versions)

    • OEM Equivalent Performance – meets or exceeds Apple’s original specifications (A1321)

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

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

    Safety & Reliability

    The A1321 replacement battery includes an intelligent circuit board with voltage stability, thermal regulation, and cell balancing, ensuring safe charging and reliable operation for your MacBook Pro.

    Packaging & Shipping

    Every battery is packed with anti-static protection and shock-absorbing foam to prevent damage during transit. Each unit undergoes strict testing before shipment to guarantee quality and performance.

    Compatibility Note

    Compatible Models:

    • MacBook Pro 15" A1286 (Mid 2009 & 2010 Versions)

    Compatible Part Numbers:

    • A1321 / MB985 / MB985LL/A / MB986 / MB986LL/A / MB986J/A / MC118 / MC118LL/A / MC373LL/A

     Not compatible with MacBook Pro 13" / 17" or later Retina models

    Important compatibility check.

    1. Before you purchase, please confirm that your MacBook's model number, the original battery's part number and your MacBook's version correctly match this replacement battery. You can access this information on your computer by: About this Mac --> More info... --> Serial number--> Check your MacBook's version on offical website or Google with the SN.

    2. Please take out the battery from your Macbook Pro, original battery model number will list on the battery. Model compatible with the listing: A1321 ONLY.

    --Please check your original battery model and shape before order

    Compatible Part Numbers:

    Use"Ctrl+ F" Find your P/N

    A1321 020-6380-A 020-6766-B 661-5211 661-5476

    MB986*/A / MB986CH/A / MB986J/A / MB986TA/A / MB986X/A / MB986ZP/A (only for Mid 2009 Mid 2010 Version)

    MB985 / MB985CH/A / MB985*/A / MB985CH/A / MB985J/A / MB985TA/A / MB985X/A / MB985ZP/A

    MC118 / MC118*/A / MC118CH/A / MC118J/A / MC118TA/A / MC118X/A / MC118ZP/A

    Compatible MacBookPro 15" Battery Model:

    A1321 ONLY

    A1321 020-6380-A 020-6766-B 661-5211 661-5476

    MB986*/A / MB986CH/A / MB986J/A / MB986TA/A / MB986X/A / MB986ZP/A (only for Mid 2009 Mid 2010 Version)

    MB985 / MB985CH/A / MB985*/A / MB985CH/A / MB985J/A / MB985TA/A / MB985X/A / MB985ZP/A

    Compatible Models:

    MacBook Pro 15.4" inch Mid 2009 version:

    MacBook Pro 15.4" 2.53GHz Core 2 Duo (MC118LL/A, A1286, MacBookPro5,4) - Mid 2009

    MacBook Pro 15.4" 2.66GHz Core 2 Duo (MB985LL/A, A1286, MacBookPro5,3) - Mid 2009

    MacBook Pro 15.4" 2.8GHz Core 2 Duo (MB986LL/A, A1286, MacBookPro5,3) - Mid 2009

    MacBook Pro 15.4" 3.06GHz Core 2 Duo (MB986LL/A, A1286, MacBookPro5,3) - Mid 2009

    MacBook Pro 15.4" inch Mid 2010 version:

    MacBook Pro 15.4" 2.4GHz Core i5 (MC371LL/A, A1286, MacBookPro6,2) - Mid 2010

    MacBook Pro 15.4" 2.53GHz Core i5 (MC372LL/A, A1286, MacBookPro6,2) - Mid 2010

    MacBook Pro 15.4" 2.66GHz Core i7 (MC373LL/A, A1286, MacBookPro6,2) - Mid 2010

    MacBook Pro 15.4" 2.8GHz Core i7 (MC373LL/A, A1286, MacBookPro6,2) - Mid 2010

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    Genuine A1321 / A1286 Laptop Battery FAQ – MacBook Pro 15-inch

     

    1. Which MacBook Pro models are compatible with the A1321/A1286 battery?

    The Genuine A1321 / A1286 battery fits the MacBook Pro 15-inch series:

    Model years: Mid 2009 & 2010

    Apple Part Numbers: MB985, MB985LL/A, MB986, MB986LL/A, MB986J/A, MC118, MC118LL/A, MC373LL/A

    This ensures full compatibility and reliable performance with these MacBook Pro models.

     

    2. What are the specifications of the A1321 / A1286 battery?

    Battery Type: Lithium-ion (Li-ion)

    Voltage: 10.95V – 11.1V

    Capacity: 77.5Wh

    Cells: 6-cell battery

    The battery provides long-lasting power to keep your MacBook Pro running for hours on a single charge.

     

    3. How do I know if I need to replace my MacBook Pro battery?

    You should consider replacing your A1321/A1286 battery if:

    Your MacBook Pro shuts down unexpectedly.

    The battery does not charge to 100% or charges slowly.

    macOS displays a “Service Battery” warning.

    Battery life is significantly shorter than when new.

    Replacing with a genuine A1321/A1286 battery restores optimal performance.

     

    4. Is the A1321 / A1286 battery genuine and safe?

    Yes. This is an original OEM-quality battery designed for MacBook Pro 15-inch. Benefits include:

    Overcharge and overheating protection

    Stable voltage output for safe operation

    Durable lifespan with multiple charge cycles

    Using a genuine battery prevents risks associated with low-quality third-party alternatives.

     

    5. How do I install the A1321 / A1286 battery?

    Power off your MacBook Pro.

    Remove the bottom case using the appropriate screwdriver.

    Disconnect the old battery from the logic board.

    Install the new A1321/A1286 battery and secure screws.

    Power on your MacBook Pro.

    Tip: Handle the battery carefully to avoid puncturing or damaging it.

     

    6. How long does the A1321 / A1286 battery last?

    Battery life per charge: 4–6 hours (depending on usage)

    Cycle lifespan: Around 1000 charge cycles

    Proper care, such as avoiding extreme temperatures, can extend the battery’s lifespan.

     

    7. Can this battery be used with newer MacBook Pro models?

    No. The A1321/A1286 battery is only compatible with MacBook Pro 15-inch Mid 2009 & 2010 models. Newer MacBook Pros use different batteries with incompatible connectors.

     

    8. Where can I buy a genuine A1321 / A1286 battery?

    Purchase from authorized retailers or trusted online stores to ensure OEM quality. Look for warranty support and positive customer reviews.

     

    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?

    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

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