---
product_id: 544646743
title: "Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case with Extended Backup, Ultra Rechargeable Battery Pack External Charger (6.7inch) - Black"
brand: "yishda"
price: "NT$115"
currency: TWD
in_stock: false
reviews_count: 8
url: https://www.desertcart.tw/products/544646743-battery-case-for-iphone-12-pro-max-8500mah-portable-protective
store_origin: TW
region: Taiwan
---

# Charge & sync without removal Designed for iPhone 12 Pro Max 8500mAh capacity Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case with Extended Backup, Ultra Rechargeable Battery Pack External Charger (6.7inch) - Black

**Brand:** yishda
**Price:** NT$115
**Availability:** ❌ Out of Stock

## Summary

> 🔌 Power Meets Style: Never Run Out of Juice Again!

## Quick Answers

- **What is this?** Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case with Extended Backup, Ultra Rechargeable Battery Pack External Charger (6.7inch) - Black by yishda
- **How much does it cost?** NT$115 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/544646743-battery-case-for-iphone-12-pro-max-8500mah-portable-protective)

## Best For

- yishda enthusiasts

## Why This Product

- Trusted yishda brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stay Informed:** 4 LED indicators keep you updated on your battery level at a glance.
- • **Power Up Your Day:** With a robust 8500mAh battery, stay charged and connected all day long!
- • **Easy Access & Control:** Perfect cutouts for seamless access to all ports and integrated power switch.
- • **Smart Charging Technology:** Intelligently prioritizes charging your phone before the battery case.
- • **Sleek & Stylish Protection:** Lightweight design that protects against drops while keeping your style intact.

## Overview

The YISHDA Battery Case for iPhone 12 Pro Max is a sleek, protective charging solution featuring an impressive 8500mAh capacity. Designed specifically for the iPhone 12 Pro Max, it allows for charging and syncing without removal, while its lightweight design ensures maximum portability. With smart charging technology and LED indicators, you can effortlessly manage your power needs.

## Description

Battery Case for iPhone 12 Pro Max, YISHDA 8500mAh Portable Protective Charging Case for iPhone 12 Pro Max Extended Backup Ultra Rechargeable Battery Pack External Charger Case(6.7inch)-Black Features: * Faster and safer charging with our iPhone battery charger case. * Ultra-thin, light-weight and compact design for portability. * Easy installation and removal. * Charge and sync your phone while refilling your battery at the same time. * LED indicator shows how much juice before you go. * Built-in short-circuiting and over-charging protection. Safety first. * High quality material to protect your phone, charging and protecting 2 in 1. * The iPhone ultra slim battery case provides 150% extra power to your iPhone, 14 hours talk time, 12 hours Internet use or up to 43 hours audio playback. Specifications: Compatibility: For iPhone 12 Pro Max (6.7 Inch) Battery Type: Grade A+ Li-polymer Capacity: 8500mAh Input: 0.5-1.5A (adaptive) Output: DC 1A-1.5A Connector: Lightning Sync (compatible with Apple's lightning cable) Package Included: 1 x 8500mAh Battery Charger Case for iPhone 12 Pro Max (6.7Inch) 1 x User Manual Warning and Notes: 1. The battery case needs to be charged fully at the first time before being used. 2. Prevent the battery case from serious fall, abrasion, or others. If there is any unusual phenomenon, please stop using it immediately. 3. Do not expose this battery case to moisture or liquid. Please keep it dry all the time. 4. Do not place the battery case next to the heat-dissipating electrical devices, or other excessively hot environment. 5. Recommend that you use iPhone's original data cable to charge the battery case to avoid incompatibility or some other issues. 6. Do not disassemble or replace any spare parts. 7. Due to high output power, when you charge the battery case, its surface will gradually become hot. This is a normal reaction.

## Features

- Lightweight

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age Range Description | Adult |
| Asin | B0C9TNV9XD |
| Best Sellers Rank | 467 in Mobile Phone Battery Charger Cases |
| Brand Name | YISHDA |
| Colour | Black |
| Compatible Cellular Phone Models | Apple iPhone 12 Pro Max |
| Compatible Devices | iPhone 12 Pro Max |
| Compatible Phone Models | iPhone 12 Pro Max |
| Customer Package Type | Standard |
| Customer Reviews | 3.6 3.6 out of 5 stars (59) 3.6 out of 5 stars |
| Embellishment Feature | Clear Back |
| Enclosure Material | Plastic |
| Form Factor | Basic Case |
| Is Autographed | No |
| Model Name | 12PRO MAX |
| Model Number | 12PRO MAX |
| Number Of Packs | 1 |
| Pattern | Solid |
| Product Features | Lightweight |
| Product Finish Type | Glossy |
| Screen Size | 6.7 Inches |
| Theme | Protective |
| Unit Count | 1.0 count |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** YISHDA
- **Compatible phone models:** iPhone 12 Pro Max
- **Colour:** Black
- **Compatible devices:** iPhone 12 Pro Max
- **Material:** Plastic
- **Water resistance level:** Not Water Resistant
- **Pattern:** Solid
- **Theme:** Protective
- **Special feature:** Lightweight
- **Finish type:** Smooth

## Images

![Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case with Extended Backup, Ultra Rechargeable Battery Pack External Charger (6.7inch) - Black - Image 1](https://m.media-amazon.com/images/I/61-GBowAsZL.jpg)
![Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case with Extended Backup, Ultra Rechargeable Battery Pack External Charger (6.7inch) - Black - Image 2](https://m.media-amazon.com/images/I/71iCUAvNCJL.jpg)
![Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case with Extended Backup, Ultra Rechargeable Battery Pack External Charger (6.7inch) - Black - Image 3](https://m.media-amazon.com/images/I/71ZdBFZlXVL.jpg)
![Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case with Extended Backup, Ultra Rechargeable Battery Pack External Charger (6.7inch) - Black - Image 4](https://m.media-amazon.com/images/I/71S6KxdrDaL.jpg)
![Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case with Extended Backup, Ultra Rechargeable Battery Pack External Charger (6.7inch) - Black - Image 5](https://m.media-amazon.com/images/I/61XykNBOGBL.jpg)

## Questions & Answers

**Q: Recently bought the phone case I got the original headset for the phone I plugged the headset in but it’s not showing the symbol that headset connect**
A: I too had this problem, I couldn't have my headphones (original) plugged in to the case and for them to connect and still work. Unfortunately I had to either have the case off and listen to headphones, but I didn't want to risk damaging the connections so I went ahead and purchased some Bluetooth enabled headphones and they work well. One thing I have to say about this case is mine gets really hot when charging my phone from the case. Whether that's just my case being damaged over time just thought id let you know. All the best. Hope all is well with the current COVID situation.

**Q: Hey, how long should it take to fully charge the battery case? Not sure if it's broken but it never seems to reach full battery capacity**
A: It should take up to 2 hours to fully charge but before you charge the phone you must charge the charger

**Q: Can you use normal headphones with an adapter?**
A: Yes

**Q: Can you stick a magnet to the back of the case?**
A: because the charging box capacity is high, the strength of the magnet is not too strong . Thank you for your advice.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best case rather than portable batteries
*by  on Reviewed in the United Kingdom 22 May 2024*

I check all the reviews and i buy this case some people said you can’t turn it off but that’s wrong…..I just use my case from last 2 weeks its very good light weight and when i put on charge at night its automatically both case and iphone charge and in the morning my iphone and battery case full of charge and iphone stop charging when its on 100%…. Than i use all day when my battery on 20% i press button and its go on charging and when its on 100% i just press double time then its turned off…..: thank you

### ⭐ This battery doesn't work and I can't send it back- collection only -no one comes to collect it
*by  on Reviewed in the United Kingdom 22 February 2025*

This battery doesn't work and I can't send it back.. it says they will collect it but no one comes to collect it..

### ⭐⭐⭐⭐⭐ Great charger
*by  on Reviewed in the United Kingdom 5 April 2025*

Cheaper than my last one but same so very happy

## Frequently Bought Together

- YISHDA Battery Case for iPhone 12 Pro Max, 8500mAh Portable Protective Charging Case for iPhone 12 Pro Max Extended Backup Ultra Rechargeable Battery Pack External Charger Case(6.7inch)-Black
- JETech Privacy Screen Protector for iPhone 12 Pro Max 6.7-Inch with Camera Lens Protector, Anti Spy Tempered Glass Film, 2-Pack Each

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**Shop now:** [https://www.desertcart.tw/products/544646743-battery-case-for-iphone-12-pro-max-8500mah-portable-protective](https://www.desertcart.tw/products/544646743-battery-case-for-iphone-12-pro-max-8500mah-portable-protective)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-08-27*