---
product_id: 8550228
title: "OISOUND 2500mAh Credit-Card-Size Ultra-Slim 1A USB Fast Charging Portable External Battery Charger Pack with Built-In Micro-USB Cable - White"
brand: "coisound"
price: "626899₫"
currency: VND
in_stock: false
category: "Wireless Phone Accessory"
url: https://www.desertcart.vn/products/8550228-oisound-2500mah-credit-card-size-ultra-slim-1a-usb-fast
store_origin: VN
region: Vietnam
---

# OISOUND 2500mAh Credit-Card-Size Ultra-Slim 1A USB Fast Charging Portable External Battery Charger Pack with Built-In Micro-USB Cable - White

**Brand:** coisound
**Price:** 626899₫
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** OISOUND 2500mAh Credit-Card-Size Ultra-Slim 1A USB Fast Charging Portable External Battery Charger Pack with Built-In Micro-USB Cable - White by coisound
- **How much does it cost?** 626899₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/8550228-oisound-2500mah-credit-card-size-ultra-slim-1a-usb-fast)

## Best For

- coisound enthusiasts

## Why This Product

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

## Description

Features:
Capacity: 2500mAh, Li-polymer, Built-in micro USB output, not need to bring separated cable.
Ultra Slim Design for Easy Carrying，Super slim, OK to put in to wallet.
It applies to Samsung, Apple 4/.4s, Apple 5/5s and other.
For iPhones requires Micro USB to iPhone Lightning Converter.
Output: 5V / 1A USB port for charging devices. Input: 5V / 1A. Use a 1A adapter (not included) for fastest charging time.
Package includes: External Battery, Micro USB wire, iPhone5 converter. 
Specifications:
Capacity: 2500mAh (Li-polymer battery cell)
Dimensions: 3.8" x 2.44" x .0.2" (9.8 x 6.2 x 0.51cm) 
Weight: 2.39 oz (68 g) 
Color:white
Package includes: External Battery, iPhone5 converter. 
This is a power bank that's so compact that can be able to put into your wallet.It's with a built-in output port (micro USB), you don't need to bring another cable for your Android/Iphone or  Windows smart phones.

## Features

- Capacity: 2500mAh, Li-polymer, Built-in micro USB output, not need to bring separated cable.
- Ultra Slim Design for Easy Carrying，Super slim, OK to put in to wallet.
- It applies to Samsung, Apple 4/.4s, Apple 5/5s and other.
- For iPhones requires Micro USB to iPhone Lightning Converter.
- Output: 5V / 1A USB port for charging devices. Input: 5V / 1A. Use a 1A adapter (not included) for fastest charging time

## Images

![OISOUND 2500mAh Credit-Card-Size Ultra-Slim 1A USB Fast Charging Portable External Battery Charger Pack with Built-In Micro-USB Cable - White - Image 1](http://ecx.images-amazon.com/images/I/31S2wsAITtL.jpg)
![OISOUND 2500mAh Credit-Card-Size Ultra-Slim 1A USB Fast Charging Portable External Battery Charger Pack with Built-In Micro-USB Cable - White - Image 2](http://ecx.images-amazon.com/images/I/41BgPlrofSL.jpg)
![OISOUND 2500mAh Credit-Card-Size Ultra-Slim 1A USB Fast Charging Portable External Battery Charger Pack with Built-In Micro-USB Cable - White - Image 3](http://ecx.images-amazon.com/images/I/41yOmFx-aHL.jpg)
![OISOUND 2500mAh Credit-Card-Size Ultra-Slim 1A USB Fast Charging Portable External Battery Charger Pack with Built-In Micro-USB Cable - White - Image 4](http://ecx.images-amazon.com/images/I/315IZHgqEUL.jpg)
![OISOUND 2500mAh Credit-Card-Size Ultra-Slim 1A USB Fast Charging Portable External Battery Charger Pack with Built-In Micro-USB Cable - White - Image 5](http://ecx.images-amazon.com/images/I/31ajC5GrIGL.jpg)

---

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**Shop now:** [https://www.desertcart.vn/products/8550228-oisound-2500mah-credit-card-size-ultra-slim-1a-usb-fast](https://www.desertcart.vn/products/8550228-oisound-2500mah-credit-card-size-ultra-slim-1a-usb-fast)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-04-26*