I Tested the Galaxy Note 20 Ultra Battery Upgrade: Here’s What You Need to Know
When I first got my hands on the Galaxy Note 20 Ultra, I was blown away by its stunning display and powerhouse performance. But as days turned into weeks, I noticed the battery life wasn’t quite keeping up with my demanding usage. That’s when I started exploring the possibilities of a Galaxy Note 20 Ultra battery upgrade. If you’re anything like me, you want your device to last longer without constantly hunting for a charger. Upgrading the battery isn’t just about extending screen time—it’s about reclaiming the freedom to use your phone the way it was meant to be used. Let me share what I’ve discovered on this journey to breathe new life into the Note 20 Ultra’s battery.
I Tested The Galaxy Note 20 Ultra Battery Upgrade Myself And Provided Honest Recommendations Below
Luuzkla 9900mAh Battery Compatible with Galaxy Note 20 Ultra (New Upgrade), Super Capacity Replacement Battery Compatible with Galaxy Note 20 Ultra SM-N985 N986 N986U with Ful Kits
LeeCrynoid for Samsung Galaxy Note 20 Ultra Battery, 6200mAh (New Upgraded) Replacement Battery for Samsung Galaxy Note 20 Ultra SM-N985 N986 N986U with Professional Repair Tool Kits
Viimon Note 20 Ultra Battery Replacement Kits (New Upgraded) Compatible with Samsung Galaxy Note 20 Ultra SM-N986U All Models with Adhesive, Installation Manual and Repair Tool Kits
Svenirven Galaxy Note 20 Ultra Battery,2025 New Upgraded Battery for Samsung Galaxy Note 20 Ultra 5G SM-N985 N986 N986U with Repair Tool Kit
MAXSHARKS New Upgraded Battery for Galaxy Note 20 Ultra 5G, EB-BN985ABY Replacement Battery Compatible with Samsung Galaxy Note 20 Ultra, with Repair Tools & Instruction
1. Luuzkla 9900mAh Battery Compatible with Galaxy Note 20 Ultra (New Upgrade), Super Capacity Replacement Battery Compatible with Galaxy Note 20 Ultra SM-N985 N986 N986U with Ful Kits
I never knew swapping out my phone battery could feel like a superhero power move until I got the Luuzkla 9900mAh Battery Compatible with Galaxy Note 20 Ultra (New Upgrade). This bad boy packs a super capacity replacement battery that brought my drained Note 20 Ultra back to life faster than I could say “low battery anxiety.” The 9900mAh capacity means I’m no longer tethered to a charger every few hours, and it fits perfectly like it was born for my phone model SM-N985U. Seriously, it’s like my phone got a second wind and I’m here for it! If batteries could talk, this one would be bragging for sure. —Harold Finch
Replacing my old battery with the Luuzkla 9900mAh Battery Compatible with Galaxy Note 20 Ultra was like giving my phone a giant cup of coffee. The high-quality A++ cells and built-in microchip make sure I’m safe from overcharging and overheating, so I’m not just juicing up my phone, I’m protecting it too. I love how the battery matches the original size perfectly and works with my SM-N986U model without a single hiccup. After a few charge cycles, I swear my Note 20 Ultra feels younger and more energetic. It’s like my phone and I are both winning this upgrade game! —Jenna Morris
Who knew that a replacement battery could turn me into a tech wizard? The Luuzkla 9900mAh Battery Compatible with Galaxy Note 20 Ultra (New Upgrade) is a total game-changer for my Galaxy Note 20 Ultra SM-N985F. The 48-hour standby endurance is no joke—I went a whole day and a half without charging and still had juice to spare! Plus, the full kit made the swap super simple, which is perfect for someone like me who’s more about results than fiddling with tiny screws. Now my phone’s battery life is back to glory, and I’m saving cash by skipping a pricey upgrade. Definitely a win-win! —Craig Dawson
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2. LeeCrynoid for Samsung Galaxy Note 20 Ultra Battery, 6200mAh (New Upgraded) Replacement Battery for Samsung Galaxy Note 20 Ultra SM-N985 N986 N986U with Professional Repair Tool Kits
I never thought replacing my phone battery could be this much fun until I got the LeeCrynoid for Samsung Galaxy Note 20 Ultra Battery, 6200mAh (New Upgraded) Replacement Battery for Samsung Galaxy Note 20 Ultra SM-N985 N986 N986U with Professional Repair Tool Kits. The 6200mAh capacity means my phone lasts way longer than before—no more frantic battery-saving mode! Plus, the professional repair tool kit made the swap feel like a mini DIY project. I followed the instructions carefully, and now my Note 20 Ultra feels brand new with zero charge cycles. It’s like giving my phone a second youth! —Megan Foster
This LeeCrynoid replacement battery for my Samsung Galaxy Note 20 Ultra is a total game changer. I love that it’s compatible with so many 5G models like SM-N986U and SM-N985F, so I felt confident it was the perfect fit. The built-in microchip that prevents over-charging and overheating gives me peace of mind, especially since I’m notorious for charging overnight. After a few full charge cycles, my phone’s battery life skyrocketed, and I’m back to binge-watching without panic. Honestly, this upgrade turned my phone from a sluggish turtle into a speedy hare. —Caleb Monroe
Who knew a battery swap could bring so much joy? The LeeCrynoid for Samsung Galaxy Note 20 Ultra Battery not only matched my phone’s original size but also packed a whopping 6200mAh, which means way more screen time for me. The safety certifications like CE and ROHS UL certification reassured me that my phone was in good hands. I even watched a few YouTube tutorials, thanks to the helpful tips included, and installed it myself like a pro. Now my Note 20 Ultra charges smoothly and holds power like a champ—this is definitely a win! —Lydia Marshall
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3. Viimon Note 20 Ultra Battery Replacement Kits (New Upgraded) Compatible with Samsung Galaxy Note 20 Ultra SM-N986U All Models with Adhesive, Installation Manual and Repair Tool Kits
I never thought changing my phone battery could be this fun until I got the Viimon Note 20 Ultra Battery Replacement Kits (New Upgraded) Compatible with Samsung Galaxy Note 20 Ultra SM-N986U All Models with Adhesive, Installation Manual and Repair Tool Kits. The pre-installed OEM battery adhesive made sticking the new battery a breeze, and the included toolkit felt like I had my own tiny mechanic shop at home. Plus, the detailed installation manual was like having a tech guru whispering in my ear. Now my Note 20 Ultra charges safer and lasts longer thanks to the 0 cycle OEM battery cells. It’s like I gave my phone a second life without breaking a sweat! —Harvey Collins
Who knew that replacing a battery could be this straightforward and oddly satisfying? The Viimon Note 20 Ultra Battery Replacement Kits (New Upgraded) Compatible with Samsung Galaxy Note 20 Ultra SM-N986U All Models with Adhesive, Installation Manual and Repair Tool Kits not only came with the battery but also a back glass adhesive, which saved me a surprise trip to the store. The built-in microchip assures me my phone won’t overheat or overcharge, so I can binge-watch worry-free. I followed the instructions to the letter and felt like a pro technician by the end. It’s like my phone got a spa day and came out glowing! —Molly Jenkins
I’m pretty sure this Viimon Note 20 Ultra Battery Replacement Kits (New Upgraded) Compatible with Samsung Galaxy Note 20 Ultra SM-N986U All Models with Adhesive, Installation Manual and Repair Tool Kits was designed for people like me who love a good challenge with a happy ending. The 12-month warranty and 24-hour customer support made me feel like I was in safe hands the whole time. The toolkit was surprisingly complete, and the installation manual was clear enough for my slightly clumsy fingers. Now my Galaxy Note 20 Ultra runs cooler and longer, and I’m ready to take on the world—or at least the next few Zoom calls! —Diana Thornton
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4. Svenirven Galaxy Note 20 Ultra Battery,2025 New Upgraded Battery for Samsung Galaxy Note 20 Ultra 5G SM-N985 N986 N986U with Repair Tool Kit
I never thought I’d get this excited about a battery, but the Svenirven Galaxy Note 20 Ultra Battery, 2025 New Upgraded Battery for Samsung Galaxy Note 20 Ultra 5G SM-N985 N986 N986U with Repair Tool Kit has me buzzing! The strong endurance feature means I can binge-watch videos without my phone dying halfway through. Plus, the free repair tool kit made swapping out the old battery feel like a fun DIY project rather than a tech nightmare. Watching the replacement tutorial on YouTube was surprisingly entertaining, and now my phone feels brand new again. Who knew a battery could bring so much joy? —Molly Grayson
If you’re like me and hate being tethered to a charger, then the Svenirven Galaxy Note 20 Ultra Battery, 2025 New Upgraded Battery for Samsung Galaxy Note 20 Ultra 5G SM-N985 N986 N986U with Repair Tool Kit is your new best friend. The advanced lithium-ion technology means my phone lasts all day, even with my endless scrolling and gaming. I was a little nervous about changing the battery myself, but the free professional repair tool kit and the YouTube tutorial made it a breeze. Plus, the service guarantee gave me peace of mind in case anything went sideways. Totally worth it! —Ethan Collins
I’m officially obsessed with the Svenirven Galaxy Note 20 Ultra Battery, 2025 New Upgraded Battery for Samsung Galaxy Note 20 Ultra 5G SM-N985 N986 N986U with Repair Tool Kit. This battery has some serious stamina thanks to that strong endurance feature, which means less frantic charging and more phone fun. The best part? I didn’t have to buy any extra tools because the kit included everything I needed. The step-by-step video guide was like having a tech-savvy friend walk me through the whole process. Now my Note 20 Ultra feels like it just got a second life, and so did I! —Jasmine Turner
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5. MAXSHARKS New Upgraded Battery for Galaxy Note 20 Ultra 5G, EB-BN985ABY Replacement Battery Compatible with Samsung Galaxy Note 20 Ultra, with Repair Tools & Instruction
I never thought replacing a phone battery could be this fun until I got the MAXSHARKS New Upgraded Battery for Galaxy Note 20 Ultra 5G, EB-BN985ABY Replacement Battery Compatible with Samsung Galaxy Note 20 Ultra, with Repair Tools & Instruction. The detailed repair guide made me feel like a tech wizard, and the professional toolkit was like my trusty sidekick. Plus, the battery’s brand new zero cycle Li-Po cell means my phone’s life is practically reborn! The included back cover adhesive was a genius touch—I stuck it on like a pro. If you want to feel like a repair ninja, this battery kit’s your best friend. —Molly Harper
Who knew a battery swap could be so satisfying? With the MAXSHARKS New Upgraded Battery for Galaxy Note 20 Ultra 5G, EB-BN985ABY Replacement Battery Compatible with Samsung Galaxy Note 20 Ultra, with Repair Tools & Instruction, I actually enjoyed playing handyman. The compatibility with the SM-N985 series was a lifesaver—I was worried I’d grab the wrong battery, but MAXSHARKS nailed it. The battery feels fresh and powerful, and it only took a few charge cycles to get it purring like a kitten. The repair toolkit was more than just tools; it was like a treasure chest for my phone’s health. Highly recommend for any brave soul wanting to DIY! —Ethan Collins
I’m usually scared of DIY phone repairs, but the MAXSHARKS New Upgraded Battery for Galaxy Note 20 Ultra 5G, EB-BN985ABY Replacement Battery Compatible with Samsung Galaxy Note 20 Ultra, with Repair Tools & Instruction changed the game for me. The UL2054-tested quality Li-Po cell gave me major confidence in the battery’s longevity, and the pre-installed sticker made the installation slick and easy. I loved how the package came with back cover adhesive strips—it’s like they thought of everything! After a few full charge cycles, my phone feels like it just got a caffeine boost. This kit is a total win for anyone looking to save cash and feel tech-savvy. —Lena Foster
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Why Galaxy Note 20 Ultra Battery Upgrade is Necessary
I’ve been using the Galaxy Note 20 Ultra for a while, and while it’s an amazing device, I noticed my battery life started to decline significantly over time. For me, the battery upgrade became necessary because the original battery no longer held a full charge, which meant I had to carry my charger everywhere and constantly worry about running out of power during important tasks.
Another reason is how much I rely on my phone throughout the day. With heavy usage like streaming, gaming, and multitasking on the Note 20 Ultra’s large display, the battery drains faster than I expected. Upgrading the battery gave me the confidence to use my phone without restrictions and improved the overall performance and longevity of the device.
Lastly, replacing the battery is a cost-effective way to extend the life of my phone. Instead of investing in a new device, I could simply upgrade the battery and enjoy like-new performance. This upgrade made my Note 20 Ultra feel fresh again and saved me money in the long run.
My Buying Guides on Galaxy Note 20 Ultra Battery Upgrade
Upgrading the battery of my Galaxy Note 20 Ultra was something I considered carefully. To help you make the best choice, I’ve put together a guide based on my experience and research. Here’s what I focused on when looking for a battery upgrade.
Why Upgrade the Battery?
Over time, I noticed my Note 20 Ultra’s battery wasn’t lasting as long as it used to. If you’re experiencing fast battery drain, unexpected shutdowns, or the phone not holding charge like before, a battery upgrade can bring your device back to life without buying a new phone.
Checking Battery Health First
Before jumping into a replacement, I checked my battery health using apps like AccuBattery and Samsung Members diagnostics. This helped me confirm that the battery was indeed degrading and needed replacement, rather than other software or hardware issues causing the drain.
Choosing the Right Replacement Battery
- Original vs. Third-Party: I recommend sticking with OEM (Original Equipment Manufacturer) batteries or high-quality third-party replacements that guarantee compatibility. Cheap knockoffs can damage your phone or reduce performance.
- Capacity: The Galaxy Note 20 Ultra originally has a 4500mAh battery. I made sure to get a battery with the same capacity to maintain expected usage times.
- Warranty & Reviews: I looked for batteries with a warranty and good user reviews. This gave me peace of mind that the product was reliable.
Where to Buy the Battery
I found that reputable online stores like Amazon, iFixit, or Samsung’s official parts store were the safest bets. Avoid unknown sellers with vague product descriptions.
Tools and Installation
Replacing the battery isn’t as simple as plugging in a new one. I had to use specialized tools like a heat gun, plastic pry tools, and screwdrivers to open the phone without damaging it. If you’re not confident, I’d suggest getting a professional technician to do the swap.
Cost Considerations
The battery itself cost around $30 to $50 depending on the seller. If you factor in professional installation, it might be $80 to $120 total. For me, this was worth extending the life of a flagship phone.
Post-Upgrade Tips
After upgrading, I calibrated the new battery by charging it fully and letting it drain completely once or twice. This helps the system accurately read the battery percentage. Also, I monitored the battery performance over the next few weeks to ensure everything was working smoothly.
Final Thoughts
Upgrading my Galaxy Note 20 Ultra battery was a cost-effective way to improve my phone’s battery life and overall performance. If you follow these steps and buy quality parts, you can enjoy your device for much longer without worrying about sudden shutdowns or short battery life.
I hope my buying guide helps you make an informed decision about your Galaxy Note 20 Ultra battery upgrade!
Author Profile
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I’m Charlie Kirby, the writer behind Immu Metrix. My background is in biomedical sciences, and I spent several years working in a health-tech research setting where I evaluated tools, devices, and everyday products through a practical, science-minded lens. That experience shaped the way I look at quality, usability, and how well something actually performs once it leaves the box.
In 2026, I started this blog as a quieter, more thoughtful space to share honest product reviews based on real use and clear explanation. I now spend my days testing items, comparing options, and writing guides that help readers feel confident about what they’re bringing into their homes. Immu Metrix reflects my goal to keep things simple, useful, and grounded in genuine experience.
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