---
product_id: 59200354
title: "Multi-function Waterproof 18650 Battery Case for Bike Light Bicycle Lamp Power Bank Box for Phones with DC USB Dual Ports"
brand: "sinomall"
price: "R1022"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/59200354-multi-function-waterproof-18650-battery-case-for-bike-light-bicycle
store_origin: ZA
region: South Africa
---

# Multi-function Waterproof 18650 Battery Case for Bike Light Bicycle Lamp Power Bank Box for Phones with DC USB Dual Ports

**Brand:** sinomall
**Price:** R1022
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Multi-function Waterproof 18650 Battery Case for Bike Light Bicycle Lamp Power Bank Box for Phones with DC USB Dual Ports by sinomall
- **How much does it cost?** R1022 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/59200354-multi-function-waterproof-18650-battery-case-for-bike-light-bicycle)

## Best For

- sinomall enthusiasts

## Why This Product

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

## Description

Input Voltage: 8.4V Output Voltage: 8.4V Overcharge protection voltage: 8.4V Over discharge protection voltage: 5V Discharge protection current: 9A Standby current: Under 10μA USB Output Voltage: 5V+/-0.2 USB Max Output: 2000mA DC Size: 5.5mm*2.1mm Size: 45x45x100mm Net weight: 130g Battery Included: No Structure: two batteries in parallel and two batteries in series Compatibility: 2 or 4 pieces 18650 li-ion batteries in any capacity Water-proof Note: Please put in battery in a right way. Charge it when power indicator light flashes. Don't use the device in the water. Waterproof standard is IPX4.

## Features

- 55*21mm 8.4V DC port battery packs for bike light
- 5V USB battery packs for mobile phone
- DC & USB port double charger
- 18650 battery packs
- power bank

## Images

![Multi-function Waterproof 18650 Battery Case for Bike Light Bicycle Lamp Power Bank Box for Phones with DC USB Dual Ports - Image 1](https://images-eu.ssl-images-amazon.com/images/I/41dd0ymwjcL.jpg)
![Multi-function Waterproof 18650 Battery Case for Bike Light Bicycle Lamp Power Bank Box for Phones with DC USB Dual Ports - Image 2](https://images-eu.ssl-images-amazon.com/images/I/41k-TXmSKTL.jpg)
![Multi-function Waterproof 18650 Battery Case for Bike Light Bicycle Lamp Power Bank Box for Phones with DC USB Dual Ports - Image 3](https://images-eu.ssl-images-amazon.com/images/I/41JdoYxkjkL.jpg)
![Multi-function Waterproof 18650 Battery Case for Bike Light Bicycle Lamp Power Bank Box for Phones with DC USB Dual Ports - Image 4](https://images-eu.ssl-images-amazon.com/images/I/41wFGimbR8L.jpg)
![Multi-function Waterproof 18650 Battery Case for Bike Light Bicycle Lamp Power Bank Box for Phones with DC USB Dual Ports - Image 5](https://images-eu.ssl-images-amazon.com/images/I/4128IvB6kSL.jpg)

---

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**Shop now:** [https://www.desertcart.co.za/products/59200354-multi-function-waterproof-18650-battery-case-for-bike-light-bicycle](https://www.desertcart.co.za/products/59200354-multi-function-waterproof-18650-battery-case-for-bike-light-bicycle)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-04-23*