I received the case, it matches the description, and as I wanted, it has a Type C connector for charging. The lid seems to be a one-time use type with clips; after closing it, it will be difficult to open it again for battery replacement.
DIY Type-C 18650 Power Bank Case Kit Portable 5W USB
Price range: $2.27 through $2.31
DIY 1-slot 18650 power bank case with Type-C input and USB 5V/1A output. Durable plastic shell, compact design, easy no-solder assembly using spring contacts.
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Estimated Delivery Time3–7 business days
Compact power bank case for DIY projects
This portable kit houses a single 18650 battery (not included) for creating your own power bank. The sleek, lightweight design makes it perfect for on-the-go charging solutions. Crafted from durable plastic, it offers long-lasting protection for your battery and electronics.
Simple, solder-free assembly
Designed for ease of use, the case features spring contacts that require no soldering, allowing quick battery installation and replacement. Type-C input supports 5V charging, while USB output delivers 5W (5V/1A) power to recharge your devices efficiently.
- No soldering required – spring contacts included
- Compact build ideal for DIY enthusiasts and emergency power
- Compatible with most USB-powered devices such as phones and earbuds
Reliable performance and broad compatibility
With an 80% power conversion efficiency, this kit ensures stable and effective energy use. Its output can charge up to 90% of standard electronic devices, making it versatile for multiple emergency or travel uses.
Key specifications
- Battery slot: single 18650 (battery not included)
- Input: Type-C 5V charging
- Output: USB 5V / 1A max (5W)
- Material: durable plastic shell
- Efficiency: approximately 80%
Package contents
- DIY battery power bank case x1
Discussion
4.6
Based on 8 reviews
The plastic supporting the battery looks weak...
After aligning the battery terminals with the grooves, the battery does not fit properly when installed.
Simple but very useful. Decent finishes. You get what you pay for.
These are great little power bank chargers for around the house- especially if you have a few 18650 cells lying around. i use them mainly for recharging led sensor lamps and the like but they’re good for most things that charge or run from a 5v usb socket. in fact they’re very un-fussy about the load.
I really like them, only the cells i bought were a bit on the upper limit of the tolerance, so i had to sand away a few of the inner ribs a bit to make them close nicely. i also kind of miss a way to test how full they are, there is no button or indication, only a blue led when in use and a red blinking when charging and continuous when full, but not when in use as far as i am aware... love the current sensing though. i use them on my mosquito tennis rackets, which i soldered a usb cable to and when i push the button they activate instantly!
