---
product_id: 37748280
title: "FOSTO iPhone 7 Plus/8 Plus Battery Case, Ultra Slim Portable Charger iPhone 8 Plus Charging Case,4000mAh External Rechargeable Power Case for iPhone 7 Plus/8 Plus [Certified Chip, iOS 10+ 5.5 inch]"
brand: "brand: fosto"
price: "NT$139"
currency: TWD
in_stock: false
reviews_count: 8
url: https://www.desertcart.tw/products/37748280-fosto-iphone-7-plus-8-plus-battery-case-ultra-slim
store_origin: TW
region: Taiwan
---

# FOSTO iPhone 7 Plus/8 Plus Battery Case, Ultra Slim Portable Charger iPhone 8 Plus Charging Case,4000mAh External Rechargeable Power Case for iPhone 7 Plus/8 Plus [Certified Chip, iOS 10+ 5.5 inch]

**Brand:** brand: fosto
**Price:** NT$139
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** FOSTO iPhone 7 Plus/8 Plus Battery Case, Ultra Slim Portable Charger iPhone 8 Plus Charging Case,4000mAh External Rechargeable Power Case for iPhone 7 Plus/8 Plus [Certified Chip, iOS 10+ 5.5 inch] by brand: fosto
- **How much does it cost?** NT$139 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/37748280-fosto-iphone-7-plus-8-plus-battery-case-ultra-slim)

## Best For

- brand: fosto enthusiasts

## Why This Product

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

## Description

Full description not available

## Features

- About this item
- Not compatible with Apple stock or traditional 3.5mm headphones. ONLY compatible with Apple Airpod Bluetooth headphones or any other wirelessly connected headphone accessories.
- Doubles your iPhone 7 Plus / 8 Plus battery power to keep you going throughout the day, essential for traveling, camping, road trips, hiking, business trips and other occasions.
- Ultra Slim thin smooth finish designed rechargeable 4000mAh battery extender case with Four LED light power indicators for controlled charging and protection experience giving you more Stamina to enjoy an additional 100% battery life
- One touch power button on the back of the case to activate your battery case with built in Smart sensor to prevent overcharging and overheating.
- Certified lightning connector,FOSTO iPhone 7 Plus /8 Plus Battery Case works with iOS10 and all future iOS software updates

## Images

![FOSTO iPhone 7 Plus/8 Plus Battery Case, Ultra Slim Portable Charger iPhone 8 Plus Charging Case,4000mAh External Rechargeable Power Case for iPhone 7 Plus/8 Plus [Certified Chip, iOS 10+ 5.5 inch] - Image 1](https://images-na.ssl-images-amazon.com/images/I/61eHPgFXhjL.jpg)
![FOSTO iPhone 7 Plus/8 Plus Battery Case, Ultra Slim Portable Charger iPhone 8 Plus Charging Case,4000mAh External Rechargeable Power Case for iPhone 7 Plus/8 Plus [Certified Chip, iOS 10+ 5.5 inch] - Image 2](https://images-na.ssl-images-amazon.com/images/I/61F86IYVyVL.jpg)
![FOSTO iPhone 7 Plus/8 Plus Battery Case, Ultra Slim Portable Charger iPhone 8 Plus Charging Case,4000mAh External Rechargeable Power Case for iPhone 7 Plus/8 Plus [Certified Chip, iOS 10+ 5.5 inch] - Image 3](https://images-na.ssl-images-amazon.com/images/I/51oyx%2B12hfL.jpg)
![FOSTO iPhone 7 Plus/8 Plus Battery Case, Ultra Slim Portable Charger iPhone 8 Plus Charging Case,4000mAh External Rechargeable Power Case for iPhone 7 Plus/8 Plus [Certified Chip, iOS 10+ 5.5 inch] - Image 4](https://images-na.ssl-images-amazon.com/images/I/614-Oj2YRrL.jpg)
![FOSTO iPhone 7 Plus/8 Plus Battery Case, Ultra Slim Portable Charger iPhone 8 Plus Charging Case,4000mAh External Rechargeable Power Case for iPhone 7 Plus/8 Plus [Certified Chip, iOS 10+ 5.5 inch] - Image 5](https://images-na.ssl-images-amazon.com/images/I/61QQ5zSivNL.jpg)

## Customer Reviews

### ⭐ 







  
  
    Hated it! There is no on off button on ...
  

*by A***Y on Reviewed in the United States on April 27, 2017*

Hated it!  There is no on off button on this charger, it took twice as long to charge than the mophi and it is thinner so I was worried about dropping the phone & having the screen crack.  I returned the item to Amazon directly because the seller tried to offer me half of what I paid for it.  If you do purchase this item make sure to purchase through Anazon prime so you can return for a full refund.

### ⭐⭐ 







  
  
    Iphone 7Plus Battery Case FOSTO Ultra slim. Disappointed due to echo on the other person's side.
  

*by M***N on Reviewed in the United States on September 25, 2017*

August 4th I was so excited to receive my FOSTO iPhone 7 Plus battery case (ultra slim fit). This seemed like it was going to be my new dream case. My 7 Plus fit like a glove in it and the lenses and buttons were in perfect alignment. My phone held a charge it seemed like forever. I think after using my phone for two days the battery finally drained. Charging it up was a breeze. I believe it took 4 hours. I was traveling oversees in two days and set it aside to use for my trip. I had not made any phone calls yet, but it was working very well and I was super happy to have such a great looking and functional battery case that actually fit my iphone 7 Plus. When I got to my destination I called for my ride. The person on the other end had a hard time understanding me. She said there was an echo. I took the case off and inspected it, the seals seemed fine. I was 9 thousand miles away and unable to remedy my problem. Another customer review says this better than I can and I quote: "speaker holes are larger than this phone cover so when you slide your phone in, it echoes on the other people side, manufacturer did not allow for the same size width of the phone speaker in this model phone"  I believe he is right. The quality assurance just wasn't there for this manufacturer. I wish they would have more pride in their work. Unfortunately, it's just a pay check for them. I am hoping I got a the phone case from a bad lot. Sometimes this happens. I hope the vendor will make good on his product and send me another FOSTO. I return the one I bought  To the vendor: If you read this can you please respond. I would appreciate some kind of remedy when I return to the U.S. Thanks everyone for reading my review.

### ⭐⭐⭐⭐⭐ 







  
  
    On time and right fit
  

*by K***N on Reviewed in the United States on September 3, 2018*

Happy with whole order

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**Shop now:** [https://www.desertcart.tw/products/37748280-fosto-iphone-7-plus-8-plus-battery-case-ultra-slim](https://www.desertcart.tw/products/37748280-fosto-iphone-7-plus-8-plus-battery-case-ultra-slim)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-13*