---
product_id: 31715444
title: "ROUP 5V/8.4V DC and USB Interface 18650 Battery Pack Box Holder Power Bank Case for Bike Bicycle Light Headlight Cellphone Mobile Phone iPhone (Black)"
brand: "roup"
price: "S$76"
currency: SGD
in_stock: false
category: "Misc."
url: https://www.desertcart.sg/products/31715444-roup-5v-8-4v-dc-and-usb-interface-18650-battery
store_origin: SG
region: Singapore
---

# ROUP 5V/8.4V DC and USB Interface 18650 Battery Pack Box Holder Power Bank Case for Bike Bicycle Light Headlight Cellphone Mobile Phone iPhone (Black)

**Brand:** roup
**Price:** S$76
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** ROUP 5V/8.4V DC and USB Interface 18650 Battery Pack Box Holder Power Bank Case for Bike Bicycle Light Headlight Cellphone Mobile Phone iPhone (Black) by roup
- **How much does it cost?** S$76 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/31715444-roup-5v-8-4v-dc-and-usb-interface-18650-battery)

## Best For

- roup enthusiasts

## Why This Product

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

## Description

Battery Indicators:  -7.5 V above three bright lights  -7.0 V above two bright lights  -6.5 V above a bright light  -6.5 V or less a lamp flashese slowly  -Input: DC 100-240 V (can charge the battery with 8.4 V charger)  -Output: DC 8.4 V USB: 5 V  Package Included:  1x 18650 Rechargeable battery pack box  1x Nylon bandage

## Features

- 18650 Battery pack box: upgrading in traditional 18650 8.4 V lithium battery group basis
- Improve replacement battery pack inconvenient shortcomings, greatly facilitate the users of the battery pack DIY requirements, without spot welding battery, thereby greatly reducing the battery internal resistance, improve the battery discharge performance, so as to effectively improve battery life
- Power supply: you can use two or four 18650 rechargeable lithium battery as a power source
- The output side: USB and DC dual output power supply function, DC output voltage is 8.4 V (can power the 8.4 V device, such as the bike light), DC output voltage is 5 V (can power the cellphone and other 5 V device), to meet a wider usage scenarios, the product comes with overcharge and over discharge protection, protection of the battery is more safe and sustainable

## Images

![ROUP 5V/8.4V DC and USB Interface 18650 Battery Pack Box Holder Power Bank Case for Bike Bicycle Light Headlight Cellphone Mobile Phone iPhone (Black) - Image 1](http://ecx.images-amazon.com/images/I/41F5JBLZcbL.jpg)
![ROUP 5V/8.4V DC and USB Interface 18650 Battery Pack Box Holder Power Bank Case for Bike Bicycle Light Headlight Cellphone Mobile Phone iPhone (Black) - Image 2](http://ecx.images-amazon.com/images/I/41K398G15uL.jpg)
![ROUP 5V/8.4V DC and USB Interface 18650 Battery Pack Box Holder Power Bank Case for Bike Bicycle Light Headlight Cellphone Mobile Phone iPhone (Black) - Image 3](http://ecx.images-amazon.com/images/I/41Veo5YKLlL.jpg)
![ROUP 5V/8.4V DC and USB Interface 18650 Battery Pack Box Holder Power Bank Case for Bike Bicycle Light Headlight Cellphone Mobile Phone iPhone (Black) - Image 4](http://ecx.images-amazon.com/images/I/41GxKk%2BM1vL.jpg)
![ROUP 5V/8.4V DC and USB Interface 18650 Battery Pack Box Holder Power Bank Case for Bike Bicycle Light Headlight Cellphone Mobile Phone iPhone (Black) - Image 5](http://ecx.images-amazon.com/images/I/41GoCKW%2BY9L.jpg)

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**Shop now:** [https://www.desertcart.sg/products/31715444-roup-5v-8-4v-dc-and-usb-interface-18650-battery](https://www.desertcart.sg/products/31715444-roup-5v-8-4v-dc-and-usb-interface-18650-battery)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-03*