--- product_id: 55900183 title: "Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, 8.4V Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike Light Headlamp(Red)" price: "31403CFA" currency: XOF in_stock: true reviews_count: 4 url: https://www.desertcart.sn/products/55900183-bike-light-batteries-pack-case-waterproof-case-for-6-x store_origin: SN region: Senegal --- # Waterproof 8.4V Output DC & USB Interface Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, 8.4V Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike Light Headlamp(Red) **Price:** 31403CFA **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Light Up Your Adventure with MINCHEN! ## Quick Answers - **What is this?** Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, 8.4V Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike Light Headlamp(Red) - **How much does it cost?** 31403CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/55900183-bike-light-batteries-pack-case-waterproof-case-for-6-x) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy Setup:** Load and go—just insert batteries and screw on the cover! - • **Stay Connected:** USB interface for emergency phone charging on the go. - • **Rugged & Reliable:** Durable, lightweight, and waterproof design for all weather conditions. - • **Power Up Your Ride:** Rechargeable 8.4V battery pack for ultimate cycling safety. - • **Visual Power Check:** Power status indicators keep you informed. ## Overview The MINCHEN Bike Light Batteries Pack Case is a waterproof, rechargeable battery pack designed for cycling enthusiasts. It accommodates 6 x 18650 batteries, providing an 8.4V output for bike lights and headlamps, while also featuring a USB interface for emergency phone charging. With a durable plastic construction and power status indicators, this lightweight case ensures you stay powered up and safe on your rides. ## Description If you have same capacity 18650 batteries on hand, just need to put 2/4/ 6 batteries into the batteries pack case according to the "+" and "-" inside the case, then srew case cover, a DIY batteries pack power band for your Bike light Headlamp is ready! So easy and so convenient! - Bikelight Headlight Safety Battery Pack Case with DC and USB interface. - Great for DIY a 18650 batteries pack power bank for your bikelight headlamp. - Feature: - Material: Durable Plastic, Light Weight, Waterproof and with Led indicator light for Power On/ Charing/ Full Charge. - Case Size:9x 6.7x 4.8CM - With DC and USB interface: can connect USB interface to charge mobile phone; Connect DC interface, power led bike light or connect 8.4V Charger to charge the batteries pack. - Over-charge protection voltage:8.4 V - Over-discharge protection voltage: 5 V - Over-discharge protection current: 9 A - Standby current: 10A - DC output voltage : 8.4V - USB output standard voltage: 5 V±0.2 - USB max output: 2000MA - Package includes: - 1x Red safety bikelight batteries pack case ; - 1x Strap. Note: No batteries and charger included. Review: Got some good quality 18650 to go with it perfect. - We got this to use it as a power brick for charging usb items we charge it and another one off of solar.... Works great for our use.... only as good as the 18650 that you put in it so the better the batteries the better the end result... Review: Excellent back up battery - Excellent ## Features - The Rechargeable Waterproof 18650 Battery Case is special designed for Cycling Bike light Headlight, with DC and USB interface; DC interface is for connecting 8.4V Bike light, USB interface suitable for connecting 4.2v Bike light head lamp, or charge cell phone in emergency - Easy and convenient to use:Just Load 4-6pcs 18650 3.7v Rechargeable batteries into the case rightly and screw the cover on, then a 8.4V Batteries pack power bank are ready for your expensive Cycling Bikelight Headlamp or charge your mobile phone - Material: Durable Plastic, Light weight and Waterproof, Case Size: 9x 6.7 x 4.8cm - [Power Status Indicator Showing] Turn on the Blue Switch, 3x Blue Indicators will showing you the batteries power status inside:Three lights lit on(power≥80%). - Two lights lit on(50%≤power≤80%). - One light lit on(runtime≤30minutes, need change batteries or charge batteries). - Standard 5.5 DC interface,Output voltage: 8.4V, Input voltage: 8.4V ## Technical Specifications | Specification | Value | |---------------|-------| | Item Package Dimensions L x W x H | 4.8 x 3.4 x 2.7 inches | | Package Weight | 0.2 Kilograms | | Brand Name | MINCHEN | | Country of Origin | China | | Color | Red for 6 | | Manufacturer | MINCHEN | | Part Number | 8.4V battery case for 6x 18650 | ## Images ![Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, 8.4V Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike Light Headlamp(Red) - Image 1](https://m.media-amazon.com/images/I/41s0nxg0yLL.jpg) ![Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, 8.4V Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike Light Headlamp(Red) - Image 2](https://m.media-amazon.com/images/I/61uP19ZRPeL.jpg) ![Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, 8.4V Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike Light Headlamp(Red) - Image 3](https://m.media-amazon.com/images/I/61nRdGK0AIL.jpg) ![Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, 8.4V Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike Light Headlamp(Red) - Image 4](https://m.media-amazon.com/images/I/61mJtqILqdL.jpg) ![Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, 8.4V Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike Light Headlamp(Red) - Image 5](https://m.media-amazon.com/images/I/61j8mbClLtL.jpg) ## Questions & Answers **Q: For the 5v usb, does it use a buck converter (switching) or linear step-down converter to get voltage down from 7.4v to 5v?** A: Drive internal depressurization, USB terminal does not need external epuipment to get voltage down,can use USB Cable to charge phone directly. **Q: Are all button type 18650 protected?** A: Protected? Not sure what you are asking. I use this for road bike lights. Unit is waterproof and controlled with positive discharge / use vis a button. **Q: Can I use just 2 batteries? Will it still work?** A: It's better to use at lease 4PC 18650 full charged batteries. **Q: Does this provide continous power to 5v usb without turning off without the device drawing power like a power supply?** A: Yes it does. I power my night bike lights and charge my phone at the same time. Love it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Got some good quality 18650 to go with it perfect. *by P***K on May 11, 2024* We got this to use it as a power brick for charging usb items we charge it and another one off of solar.... Works great for our use.... only as good as the 18650 that you put in it so the better the batteries the better the end result... ### ⭐⭐⭐⭐⭐ Excellent back up battery *by M***N on June 22, 2024* Excellent ### ⭐ Failed after a few uses *by S***N on March 2, 2021* Doesn't work... shorted out I guess... waste of money --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/55900183-bike-light-batteries-pack-case-waterproof-case-for-6-x](https://www.desertcart.sn/products/55900183-bike-light-batteries-pack-case-waterproof-case-for-6-x) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-05-24*