---
product_id: 787042767
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: "9022 som"
currency: KGS
in_stock: true
reviews_count: 13
category: "Xyirmcyf"
url: https://www.desertcart.kg/products/787042767-21800mah-super-capacity-battery-compatible-with-iphone-11-pro-max
store_origin: KG
region: Kyrgyzstan
---

# 21800mAh ultra capacity 0 cycle, 2000+ charge lifespan Pro-grade repair toolkit included 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:** 9022 som
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your iPhone 11 Pro Max like a boss—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?** 9022 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/787042767-21800mah-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

- • **Safe & Smart:** A+ grade Li-Polymer cells with built-in smart chip protect against overcharge, overheating, and short circuits—safety meets performance.
- • **DIY Made Easy:** Complete professional repair toolkit included, plus step-by-step video guides—replace your battery like a pro, no tech degree needed.
- • **Built to Endure:** 0 cycle new battery with up to 2000 charging cycles means your iPhone 11 Pro Max stays powered longer, no compromises.
- • **Power That Outlasts:** Experience 21800mAh super capacity—more juice than your original battery for unstoppable all-day productivity.
- • **Confidence Guaranteed:** 12-month exchange or refund policy ensures risk-free upgrade—join thousands of savvy users who trust XYIRMCYF.

## Overview

This XYIRMCYF replacement battery for iPhone 11 Pro Max delivers a massive 21800mAh capacity—significantly exceeding the original battery life. Featuring 0 cycle freshness and a lifespan of up to 2000 charge cycles, it ensures long-lasting performance. The package includes a professional repair toolkit for easy installation, backed by advanced safety features like overcharge and overheating protection. Certified by CE, FCC, UL, PSE, and ROHS, it offers a reliable, risk-free upgrade with 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: XYIRMCYF Battery note 10plus - Very good product.ordered it for my Note 10 plus, work perfectly and I would say easy value for money. At the same time I don't see any changes in the capacity of the battery and how long it takes to run dry
Review: Great product, may have caused strange charging behavior (read desc) - These things last forever, they seem to have issues charging and I don't know if that's just because of my controller but it takes very specific cables to charge my controller now (chromebook chargers, and other high power chargers). My girlfriend's controller does not have this issue so I do not know the cause, just wanted to note it.

## 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 |
| Best Sellers Rank | #442 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #1 in Cell Phone Replacement Batteries |
| Customer Reviews | 4.3 4.3 out of 5 stars (896) |
| Date First Available | July 10, 2025 |
| Item Weight | 5 ounces |
| Item model number | 11ProMax |
| Manufacturer | XYIRMCYF |
| Package Dimensions | 7.2 x 4.41 x 0.75 inches |

## 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/51ixfjQL4KL.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/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 4](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 5](https://m.media-amazon.com/images/I/61IBCg-hHWL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ XYIRMCYF Battery note 10plus
*by K***N on January 17, 2026*

Very good product.ordered it for my Note 10 plus, work perfectly and I would say easy value for money. At the same time I don't see any changes in the capacity of the battery and how long it takes to run dry

### ⭐⭐⭐⭐⭐ Great product, may have caused strange charging behavior (read desc)
*by J***P on December 30, 2025*

These things last forever, they seem to have issues charging and I don't know if that's just because of my controller but it takes very specific cables to charge my controller now (chromebook chargers, and other high power chargers). My girlfriend's controller does not have this issue so I do not know the cause, just wanted to note it.

### ⭐⭐⭐⭐⭐ I Did It!! You can too!
*by A***B on December 7, 2025*

After watching some YouTube videos (multiple times) I finally pulled the trigger on replacing my iPhone SE (1st gen) battery. It went amazing well! I had a few minor issues: pulling out the adhesive strips (yup, they broke) and the video addressed how to deal with that. With some blow dryer heat and some gentle prying, I was able to get the old battery out. Yay! The other issue was knowing which screwdriver-type tool to use with which screws. The screws are incredibly tiny. Repeat: incredibly TINY. 😕 I’d say the reassemble process took more time than the disassemble time. Those teeny tiny screws were challenging (along with figuring out which tool to use). After the successful reassembly the new battery showed it was 65% charged (out of the box). I went ahead and plugged in the device to fully charge to 100%. GREAT news, the battery has only gone down by 2% after 4 hours. Woo-hoo! With the original battery it would go from 100% to 20% in a matter of 2 hours ☹️. And then from 20% to zero % within minutes. I am so pleased that I now have a reliable device that I use mainly for reading ebooks and for music, plus some random apps that I got for free way back when. And a side note, I’m a female in my late 60’s, and am quite proud of myself for my accomplishment. If I can do it, you can too!

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**Shop now:** [https://www.desertcart.kg/products/787042767-21800mah-super-capacity-battery-compatible-with-iphone-11-pro-max](https://www.desertcart.kg/products/787042767-21800mah-super-capacity-battery-compatible-with-iphone-11-pro-max)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-01*