3×18650 DIY Power Bank Case – 3 USB Ports, No Welding
3×18650 DIY Power Bank Case – 3 USB Ports, No Welding
HUXUAN 3×18650 DIY Power Bank Case with 3 USB Ports
Build your own portable charger in minutes — no soldering, no welding, no tools required. The HUXUAN 3×18650 Power Bank Case lets you turn three standard 18650 batteries (sold separately) into a compact, on-the-go charging station with three USB output ports. Perfect for camping, travel, emergency preparedness, or any DIY electronics enthusiast.
Made in Mainland China.
Why You'll Love It
- Solder-Free Setup: Simply insert your 18650 batteries and you're ready to go — plug-and-play design means zero technical skills needed.
- Triple USB Output: Charge up to three devices simultaneously from a single compact housing.
- Portable & Lightweight: Compact size (22mm × 65mm × 98mm) slips easily into a bag, backpack, or pocket for reliable charging on the move.
- Durable Construction: Made from sturdy plastic and metal to protect your batteries and keep connections secure.
- Emergency Ready: An ideal backup power source when outlets aren't available — great for outdoor adventures or power outages.
Specifications
| Battery Model | 18650 (×3, not included) |
| Input | 5V 1A |
| Output | 5V 1A |
| USB Ports | 3 |
| Material | Plastic + Metal |
| Dimensions | 22mm × 65mm × 98mm |
| Package Includes | 1× Power Bank Case (batteries not included) |
| Origin | Mainland China |
How to Use
- Insert three 18650 batteries of the same capacity. Note: The flat end (sheet) is positive (+) and the spring end is negative (−). Do not reverse polarity — incorrect insertion may damage the board.
- Connect your USB data cable to any of the three USB ports.
- Begin charging your device instantly — no switches or setup required.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Are 18650 batteries included with the power bank case?
A: No, the 18650 batteries are not included. You will need to purchase three 18650 batteries separately. Make sure all three batteries have the same capacity for optimal performance and safety.
Q: How many devices can I charge at the same time with this DIY power bank case?
A: The case features three USB output ports, allowing you to charge up to three devices simultaneously, such as smartphones, earbuds, or other USB-powered devices.
Q: Do I need any soldering or special tools to assemble this power bank case?
A: No special tools or soldering are required. This is a weld-free, plug-and-play design — simply insert your 18650 batteries (observing correct polarity) and connect your USB cable to start charging right away.
Q: What is the output of this 18650 power bank case?
A: The output is 5V at 1A per port, which is suitable for charging most smartphones and small USB devices. The input for recharging the case is also 5V 1A.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.