--- product_id: 700517313 title: "XYIRMCYF 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: "$42.69" currency: USD in_stock: true category: "Xyirmcyf" url: https://www.desertcart.us/products/700517313-xyirmcyf-21800mah-super-capacity-battery-compatible-with-iphone-11-pro store_origin: US region: United States of America --- # 21800mAh super capacity Pro repair tool kit included Smart chip safety tech XYIRMCYF 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:** $42.69 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your iPhone 11 Pro Max like a pro — never settle for less! ## Quick Answers - **What is this?** XYIRMCYF 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?** $42.69 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/700517313-xyirmcyf-21800mah-super-capacity-battery-compatible-with-iphone-11-pro) ## 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 - • **Plug & Play Pro Kit:** Complete professional repair tools included for seamless DIY installation. - • **Safety First, Always:** Built-in smart chip protects against overcharge, overheating, and short circuits. - • **Zero Cycle Freshness:** Brand new 0 cycle battery ensures peak performance from day one. - • **Unmatched Power Boost:** 21800mAh capacity delivers up to 2x longer battery life than original. - • **Peace of Mind Warranty:** 12-month exchange or refund guarantee for risk-free upgrade. ## Overview The XYIRMCYF 21800mAh replacement battery for iPhone 11 Pro Max offers a massive capacity upgrade with 0 cycle freshness and up to 2000 charge cycles. It comes with a professional-grade repair tool kit for easy installation, built-in smart safety chips, and is certified by CE, FCC, UL, PSE, and ROHS. Backed by a 12-month warranty, it’s the ultimate power solution for professionals who demand reliability and longevity. ## 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. ## 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 | #7,352 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #11 in Cell Phone Replacement Batteries | | Brand | XYIRMCYF | | Compatible Phone Models | 11ProMax | | Customer Reviews | 4.1 out of 5 stars 1,663 Reviews | | Manufacturer | XYIRMCYF | | Model Name | 11ProMax | | Model Number | 11ProMax | | Recommended Uses For Product | Phone | | Reusability | Rechargeable | | UPC | 739819950274 | | Unit Count | 1.0 Count | | Warranty Description | 1 | ## Product Details - **Brand:** XYIRMCYF - **Model Name:** 12MINI - **Recommended Uses For Product:** Phone - **Reusability:** Rechargeable - **Unit Count:** 1.0 Count ## Images ![XYIRMCYF 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) ![XYIRMCYF 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) ![XYIRMCYF 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) ![XYIRMCYF 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) ![XYIRMCYF 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. ## Frequently Bought Together - XYIRMCYF 15500mAh Super Capacity Battery Compatible with iPhone 8/8G, 0 Cycle Li-Polymer Replacement Battery for iPhone 8/8G, with Professional Repair Tool Kit - for iPhone 8 Screen Replacement Black Full Assembly 4.7" 3D Touch LCD Display Screen Digitizer for A1863, A1905, A1906 with Front Camera+Earpiece+Sensors+Waterproof Seal+Repair Tools+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.us/products/700517313-xyirmcyf-21800mah-super-capacity-battery-compatible-with-iphone-11-pro](https://www.desertcart.us/products/700517313-xyirmcyf-21800mah-super-capacity-battery-compatible-with-iphone-11-pro) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-19*