--- product_id: 719652316 title: "21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit" brand: "xyirmcyf" price: "7183 kr" currency: ISK in_stock: true reviews_count: 9 category: "Xyirmcyf" url: https://www.desertcart.is/products/719652316-21800mah-super-capacity-battery-compatible-with-iphone-11-pro-max store_origin: IS region: Iceland --- # 21800mAh super capacity Pro-grade repair toolkit included Built-in smart safety chip 21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit **Brand:** xyirmcyf **Price:** 7183 kr **Availability:** ✅ In Stock ## Summary > 🔋 Power up your iPhone 11 Pro Max like a pro — never settle for less! ## Quick Answers - **What is this?** 21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit by xyirmcyf - **How much does it cost?** 7183 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/719652316-21800mah-super-capacity-battery-compatible-with-iphone-11-pro-max) ## Best For - xyirmcyf enthusiasts ## Why This Product - Trusted xyirmcyf brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **DIY Friendly Kit:** Complete professional-grade toolset for seamless iPhone 11 Pro Max battery replacement - • **Risk-Free Upgrade:** 12-month warranty with easy exchange or refund ensures confidence in your purchase - • **Smart Safety Tech:** Integrated chip prevents overcharging, overheating, and short circuits for peace of mind - • **Next-Level Durability:** 0 cycle new battery supports up to 2000 charge cycles for lasting performance - • **Unmatched Power Reserve:** 21800mAh capacity delivers up to 2x longer battery life than original ## Overview This 21800mAh Li-Polymer replacement battery is custom-built for iPhone 11 Pro Max models A2218, A2161, and A2220, offering significantly higher capacity than the original. It comes with a professional repair toolkit to simplify installation, supports up to 2000 charging cycles, and features a smart chip for advanced safety protections. Certified by CE, FCC, UL, PSE, and ROHS, it ensures reliable, long-lasting performance backed by a 12-month warranty. ## Description Important notes: 1. Before you buy the product, please confirm your mobile phone model again to avoid buying a wrong battery. You can check the model number on the back of the phone. 2. We strongly recommend that you watch the corresponding installation video on YouTube before replacing the battery. 3. Please install carefully. Avoid puncturing the battery, which may cause battery expansion. 4. If your phone constantly restarts and the logo flashes or is not charged. Probably the connection of the ribbon cable is poor. Please re-insert the ribbon cable, check the connector and clamp it firmly. 5. Please make sure to fully charge and discharge your new battery 3 to 5 cycles. 6. Please use your original charger and cable to charge this battery. If you have any questions or problems with our products, please let us know. Review: Definitely good for the price - Definitely a good battery. I have an IPhone XR, so the 8 year old battery it came with wasn’t doing well. This newer one works a lot better When i replaced it, the old battery was at 74% capacity. When it’s below 80%, it makes a lot of apps just freeze or suddenly stop working for a bit. In my case, it was mostly Google maps while I was using it to get around. I only replaced it a few hours ago and I’m already noticing a huge difference. All my apps work, and it appears to be charging faster. Of course, Apple does have a notification now when I open the battery health saying it’s not an “official Apple battery” which doesn’t bother me. I’d rather buy the same part for $30 versus $90 cause it has the Apple logo on it. Just something to keep in mind if it will bother you, as this will happen with any Apple tech when you don’t install an official Apple part. For anyone who hasn’t done this before, you will need a heat gun of some kind (some other reviewers used hair dryers, I used a heat gun from a mechanic friend) and a thin piece of flat metal to get the screen off. Absolutely take your time with this, cause if you don’t, you will break the screen, heat gun or not. There are also cables behind your screen that connects to the motherboard so be careful of those when pulling it off. Also, if you have it, use some rubbing alcohol and q-tips. There is some pretty serious glue holding the battery in place, putting the q-tips soaked in the alcohol along the edge will help soften the glue/degrade it so it will be easier to pop the older battery out. Admittedly, you could technically use the heat gun for this as well, but I’d advise against it since having it directly on any electronic battery can end badly. My only complaint about this product, is the cable that connects the battery to the motherboard is about 1-2mm too long. This makes it difficult to get in, but the seller does provide some really good metal tweezers that will help with this a lot. Overall, it’s a good product. Also cause I saw another review mention it, any battery you get for a replacement part will be charged around 50%. This is just a safety/law thing in the states. If they keep them fully charged they are more likely to get damaged from lack of use while they are in storage/inventory. Doesn’t just apply to phones, but laptops and various other lithium batteries. Also, for anyone getting rid of the old battery, staples (at the time of writing this review) will take it and recycle it for free as part of their tech recycling program. This includes bloated batteries (they just need to put those in a separate bin due to the fire hazard, so make sure to give it directly to a staff member if it’s bloated). The daily limit in terms of tech recycling at staples is 20 items and you can get points for it that go towards coupons (if your into that). Highly recommend making sure that any lithium battery is disposed of properly due to the chemicals and fire hazard the old ones can possess Review: Good price and works great so far. - Price was right and the battery arrived with everything needed to do the replacement, and then some. I think I only used about a third of the tools that were included. The battery was about half charged out of the box and has taken a full charge and has worked great since it was installed about a week ago. ## Features - 【Compatible Model】This Replacement battery compatible with iPhone 11 Pro Max (Model: A2218 A2161 A2220). (Note: NOT compatible with other iPhone model). Before purchasing this battery, please make sure that the your Phone model number matches! - 【New Upgraded Capacity】 21800mAh Super capacity compatible with iPhone 11 Pro Max, more power than original standard battery, same size but more capacity and more power life. New 0 Cycle, up to 2000 charging cycles. You will no longer have to worry about your Phone running out of battery quickly! - 【Easy Installation】XYIRMCYF Battery for iPhone 11 Pro Max with complete professional repair tool kits. If you want to replace the battery more easily, we highly recommend you to watch videos about 11 Pro Max battery replacement on YouTube. Novices can easily install, complete. If you have any questions about the battery, please contact us. - 【Safe and Quality】XYIRMCYF 11 Pro Max Replacement Battery is made of A+ grade high quality batteries. Built-in smart chip to prevent over charging, over discharging and overheating protection, short circuit protection, high safety performance, long service life. Meanwhile, our batteries are tested under strict quality control standards and certified by CE, FCC, UL, PSE, ROHS. Ensures efficient and safe use. - 【12 Months, Exchange or Refund Guaranteed】 We place a high value on customer experience. If you have any questions, whether before or after sales, please do not hesitate to contact us. We will do our best to solve it for you. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0FH6TPV11 | | Antenna Location | Phone | | Best Sellers Rank | #1,371 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #1 in Cell Phone Replacement Batteries | | Brand | XYIRMCYF | | Compatible Phone Models | 11ProMax | | Customer Reviews | 4.3 4.3 out of 5 stars (1,291) | | Manufacturer | XYIRMCYF | | Model Name | 11ProMax | | Model Number | 11ProMax | | Reusability | Rechargeable | | UPC | 739819950274 | | Unit Count | 1.0 Count | | Warranty Description | 1 | ## Product Details - **Brand:** XYIRMCYF - **Model Name:** 11ProMax - **Recommended Uses For Product:** Phone - **Reusability:** Rechargeable - **Unit Count:** 1.0 Count ## Images ![21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit - Image 1](https://m.media-amazon.com/images/I/61Dvjbi8v+L.jpg) ![21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit - Image 2](https://m.media-amazon.com/images/I/611TCONY5bL.jpg) ![21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit - Image 3](https://m.media-amazon.com/images/I/61m-oN-1wPL.jpg) ![21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit - Image 4](https://m.media-amazon.com/images/I/61C6E7M1WDL.jpg) ![21800mAh Super Capacity Battery Compatible with iPhone 11 Pro Max, 0 Cycle Li-Polymer Replacement Battery for iPhone 11 Pro Max, with Professional Repair Tool Kit - Image 5](https://m.media-amazon.com/images/I/61YKJ+m8xLL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Definitely good for the price *by P***N on March 5, 2026* Definitely a good battery. I have an IPhone XR, so the 8 year old battery it came with wasn’t doing well. This newer one works a lot better When i replaced it, the old battery was at 74% capacity. When it’s below 80%, it makes a lot of apps just freeze or suddenly stop working for a bit. In my case, it was mostly Google maps while I was using it to get around. I only replaced it a few hours ago and I’m already noticing a huge difference. All my apps work, and it appears to be charging faster. Of course, Apple does have a notification now when I open the battery health saying it’s not an “official Apple battery” which doesn’t bother me. I’d rather buy the same part for $30 versus $90 cause it has the Apple logo on it. Just something to keep in mind if it will bother you, as this will happen with any Apple tech when you don’t install an official Apple part. For anyone who hasn’t done this before, you will need a heat gun of some kind (some other reviewers used hair dryers, I used a heat gun from a mechanic friend) and a thin piece of flat metal to get the screen off. Absolutely take your time with this, cause if you don’t, you will break the screen, heat gun or not. There are also cables behind your screen that connects to the motherboard so be careful of those when pulling it off. Also, if you have it, use some rubbing alcohol and q-tips. There is some pretty serious glue holding the battery in place, putting the q-tips soaked in the alcohol along the edge will help soften the glue/degrade it so it will be easier to pop the older battery out. Admittedly, you could technically use the heat gun for this as well, but I’d advise against it since having it directly on any electronic battery can end badly. My only complaint about this product, is the cable that connects the battery to the motherboard is about 1-2mm too long. This makes it difficult to get in, but the seller does provide some really good metal tweezers that will help with this a lot. Overall, it’s a good product. Also cause I saw another review mention it, any battery you get for a replacement part will be charged around 50%. This is just a safety/law thing in the states. If they keep them fully charged they are more likely to get damaged from lack of use while they are in storage/inventory. Doesn’t just apply to phones, but laptops and various other lithium batteries. Also, for anyone getting rid of the old battery, staples (at the time of writing this review) will take it and recycle it for free as part of their tech recycling program. This includes bloated batteries (they just need to put those in a separate bin due to the fire hazard, so make sure to give it directly to a staff member if it’s bloated). The daily limit in terms of tech recycling at staples is 20 items and you can get points for it that go towards coupons (if your into that). Highly recommend making sure that any lithium battery is disposed of properly due to the chemicals and fire hazard the old ones can possess ### ⭐⭐⭐⭐⭐ Good price and works great so far. *by G***S on March 12, 2026* Price was right and the battery arrived with everything needed to do the replacement, and then some. I think I only used about a third of the tools that were included. The battery was about half charged out of the box and has taken a full charge and has worked great since it was installed about a week ago. ### ⭐⭐⭐⭐⭐ Excellent battery to give life back to your N3DS XL *by C***S on August 13, 2025* Excellent battery replacement for my N3DS XL (SNES Version). I loved the price vs. quality after use it for 2 weeks and I can say that I'm very satisfied with it. The installation is extremely simple to perform since you only need to remove the back cover (don't forget to remove the stylus and any games you have prior removing the cover). The size of the battery shown no issues and it was a perfect fit. The tool kit was perfect as I only needed 1 of the screwdrivers and keep the others for other projects. As recommended by the website, you must perform 3 to 5 complete charge and discharge cycles, and let me tell you that the discharge was a looong because even when the red light started bliking indicating that the battery was almost out, it took around 1hr to 1.5hrs to turn itself off (I got tired of playing before that happened, but left it in the gameplay loop). I used the battery by playing MK7 with full brightness, medium sound volume and the wifi on so it would drain the battery faster and still gave me a good 6-7 hours practically none stop (I didn't closed the console to avoid having it in standby). Overall, this battery's functionality delivers what is advertised on the detail page. Great price, great fit, and definitely a future next purchases. ## Frequently Bought Together - XYIRMCYF 15500mAh Super Capacity Battery Compatible with iPhone 7 Plus, 0 Cycle Li-Polymer Replacement Battery for iPhone 7 Plus, with Professional Repair Tool Kit - for iPhone 7 Plus Screen Replacement 5.5 Inch Black, Diykitpl 3D Touch LCD Screen Digitizer Replacement for A1661,A1784,A1785, with Repair Tools Kit+Waterproof Frame Adhesive+Screen Protector --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.is/products/719652316-21800mah-super-capacity-battery-compatible-with-iphone-11-pro-max](https://www.desertcart.is/products/719652316-21800mah-super-capacity-battery-compatible-with-iphone-11-pro-max) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-04-23*