DIY 3×18650 Power Bank Case – 3 USB Ports, No-Weld Design
DIY 3×18650 Power Bank Case – 3 USB Ports, No-Weld Design
DIY 3×18650 Power Bank Case with 3 USB Ports
Build your own portable charger with this no-weld, plug-and-play 18650 power bank case. Simply load three 18650 batteries (not included), connect your device via the USB ports, and you're ready to charge on the go. Perfect for DIY enthusiasts, emergency preparedness kits, camping, and travel.
Key Features
- No Soldering / Welding Required – Drop-in design makes assembly quick and easy for anyone
- Triple USB Output – 3 USB ports let you charge multiple devices simultaneously
- Fits 3 × 18650 Batteries – Batteries not included; use three cells of the same capacity
- Plug & Play – Attach a USB data cable and start charging immediately
- Compact & Portable – Slim 22 × 65 × 98 mm form factor slips into a pocket or bag
- Durable Construction – Plastic + metal housing for everyday reliability
- Emergency Charging Ready – Great backup power source when a wall outlet isn't available
Specifications
| Input | 5V 1A |
| Output | 5V 1A |
| Compatible Battery | 18650 (×3, not included) |
| USB Ports | 3 |
| Material | Plastic + Metal |
| Dimensions | 22 mm × 65 mm × 98 mm |
| PCB / Charger Included | No |
| Batteries Included | No |
| Country of Origin | Made in Mainland China |
Important Usage Notes
- All three batteries must be of the same capacity and charge level — mismatched batteries can damage the board.
- Insert batteries in the correct orientation: the flat end (positive) faces the metal sheet and the spring end (negative) faces the spring contact.
- Do not reverse battery polarity, as this may damage the internal board.
What's in the Box
- 1 × 18650 Power Bank Case (batteries and charger not included)
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Frequently Asked Questions
Q: Do 18650 batteries come included with this power bank case?
A: No, the 18650 batteries are not included. You will need to source three 18650 batteries of the same capacity separately before using this power bank case.
Q: Does this DIY power bank case require soldering or welding?
A: No soldering or welding is required. This is a fully no-weld, drop-in design — simply insert your three 18650 batteries in the correct orientation and it is ready to use.
Q: How many devices can I charge at the same time?
A: The case features 3 USB output ports, allowing you to charge up to three devices simultaneously. Output is 5V 1A per session.
Q: What happens if I insert the batteries the wrong way?
A: Reversing battery polarity can permanently damage the internal board. Always ensure the flat (positive) end faces the metal sheet and the nub (negative) end faces the spring contact before closing the case.