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    • Genuine Battery EB-BR840ABY [Upgraded] for Samsung Galaxy Watch 3 SM-R840 SM-R845 SM-R845U 45mm Battery Free Adhesive Tool Kits
    Genuine Battery EB-BR840ABY [Upgraded] for Samsung Galaxy Watch 3 SM-R840 SM-R845 SM-R845U 45mm Battery Free Adhesive Tool Kits
    Genuine Battery EB-BR840ABY [Upgraded] for Samsung Galaxy Watch 3 SM-R840 SM-R845 SM-R845U 45mm Battery Free Adhesive Tool Kits
    Genuine Battery EB-BR840ABY [Upgraded] for Samsung Galaxy Watch 3 SM-R840 SM-R845 SM-R845U 45mm Battery Free Adhesive Tool Kits
    Genuine Battery EB-BR840ABY [Upgraded] for Samsung Galaxy Watch 3 SM-R840 SM-R845 SM-R845U 45mm Battery Free Adhesive Tool Kits
    Genuine Battery EB-BR840ABY [Upgraded] for Samsung Galaxy Watch 3 SM-R840 SM-R845 SM-R845U 45mm Battery Free Adhesive Tool Kits

    Genuine Battery EB-BR840ABY [Upgraded] for Samsung Galaxy Watch 3 SM-R840 SM-R845 SM-R845U 45mm Battery Free Adhesive Tool Kits

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    Battery Capacity

    1.27Wh

    Brand

    YuYan

    Voltage

    3.85V

    Model No

    EB-BR840ABY

    Warranty

    12 Months

    Restore your Samsung Galaxy Watch 3 45mm to full power with the Genuine EB-BR840ABY [Upgraded] Battery. Designed specifically for SM-R840, SM-R845, and SM-R845U models, this high-quality replacement battery ensures reliable and long-lasting performance.

     

    Key Features:

    • Genuine Upgraded Battery: Meets or exceeds original Samsung specifications.

    • High Capacity & Long Life: Ensures your smartwatch runs longer between charges.

    • Easy Installation: Includes free adhesive tool kit for safe and convenient battery replacement.

    • Compatibility: Perfectly fits Samsung Galaxy Watch 3 45mm SM-R840, SM-R845, and SM-R845U.

    • Safety Assured: Premium lithium-ion cells with protection against overcharging, overheating, and short circuits.

    Whether your battery drains quickly or you need a spare, the EB-BR840ABY battery is a reliable solution to keep your Galaxy Watch 3 performing like new.

    What devices are compatible with the EB-BR840ABY battery?

    The EB-BR840ABY battery is compatible with Samsung Galaxy Watch 3 45mm models: SM-R840, SM-R845, and SM-R845U.

    Is this a genuine Samsung battery?

    Yes, this is a genuine upgraded Samsung battery, designed to meet or exceed the original specifications.

    Does the battery come with installation tools?

    Yes, a free adhesive tool kit is included to make battery replacement safe and easy.

    How long will the battery last after replacement?

    The battery is designed to restore daily use comparable to a new Samsung watch battery, depending on your usage habits.

    Can I install the battery myself?

    Yes, the included adhesive tool kit allows safe DIY installation. Handle carefully and avoid puncturing or bending the battery.

    Can this battery be used in other Samsung Galaxy Watch models?

    No, this battery is specifically designed for the 45mm Galaxy Watch 3 series. Using it in other models may cause malfunction.

    What warranty does this battery have?

    Warranty varies by seller, but genuine Samsung batteries typically include a limited warranty against defects.

    How should I dispose of the old battery?

    Follow local guidelines for recycling lithium-ion batteries. Do not throw them in the trash.

    Will replacing the battery affect water resistance?

    Proper installation maintains water resistance. Ensure the adhesive is applied correctly during replacement.

    How can I tell if my Galaxy Watch 3 needs a battery replacement?

    Signs include rapid battery drain, unexpected shutdowns, or frequent charging needs.

     

    Compatible Samsung Part Numbers
    EB-BR840ABY
    GH43-05011A

    Compatible Samsung Watch Models
    GALAXY WATCH 3 45MM
    SM-R845
    SM-R840

     

     

     

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    Genuine 0.92Wh 240mAh Battery BR830ABY for Samsung Galaxy Watch Active 2 40mm R830 R835

    1. What device is the BR830ABY battery compatible with?

    The BR830ABY battery is specifically designed for the Samsung Galaxy Watch Active 2 40mm models, including SM-R830 and SM-R835 versions.

     

    2. What is the capacity and power rating of this battery?

    This genuine replacement battery has a capacity of 240mAh and a power rating of 0.92Wh, providing reliable performance to keep your smartwatch powered throughout the day.

     

    3. Is this an original Samsung battery or a third-party replacement?

    This is a genuine Samsung battery, manufactured to meet the original specifications for the Galaxy Watch Active 2 40mm, ensuring safety, compatibility, and durability.

     

    4. How do I know if my Watch Active 2 battery needs replacement?

    Common signs include:

    Quick battery drain despite normal use
    Watch overheating while charging
    Watch not powering on or restarting frequently
    Reduced battery life compared to when new

     
    5. Can I install the BR830ABY battery myself?

    Replacing the battery requires opening the watch carefully, which involves specialized tools and skills. If you are not experienced with smartwatch repairs, it is recommended to have the replacement done by a professional technician.

     
    6. How long will the new battery last after installation?

    Battery life will vary based on usage, settings, and software, but a new BR830ABY should restore your Watch Active 2 to its original performance levels, offering a full day or more of usage on a single charge.

     
    7. Does the battery include installation tools or adhesive?

    This product listing is usually for the battery only. If tools, adhesive, or repair kits are needed, check the product description or purchase them separately.

     
    8. How should I care for the new battery to maximize its lifespan?


    Avoid overcharging or letting the battery fully discharge
    Keep the smartwatch away from extreme heat or cold
    Use the original Samsung charger for best results
    Charge regularly instead of letting the watch sit unused for weeks

     
    9. Is the BR830ABY battery safe to use?

    Yes, being a genuine Samsung part, it includes built-in protection against overcharging, overheating, and short-circuiting, ensuring safe and reliable operation.

     
    10. What models are not compatible with the BR830ABY battery?

    This battery is only for the Galaxy Watch Active 2 40mm (R830/R835). It will not fit the 44mm version (which uses BR820ABY) or other Galaxy Watch models.

     

    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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