18650 Power Bank Case 22.5W Fast Charging USB-C DIY Shell
18650 Power Bank Case 22.5W Fast Charging USB-C DIY Shell
Build Your Own High-Capacity Power Bank with This DIY 18650 Battery Case
Take full control of your portable charging setup with this Transparent 8-Cell 18650 Power Bank Shell. Designed for electronics enthusiasts and DIYers, this clear ABS enclosure lets you build a custom, large-capacity power bank from scratch — no soldering required. Compatible with a wide range of devices including iPhone and Samsung smartphones, it supports 22.5W fast charging via USB-C and Micro USB ports.
Made in Mainland China.
Key Features
- 22.5W Fast Charging Output: Multi-voltage output (5V/1A, 9V/2A, 12V/1.5A) delivers rapid, efficient charging for your devices.
- 8-Slot 18650 Design: Accommodates eight 18650 cells for a large total capacity — perfect for extended off-grid use or travel.
- Transparent ABS Shell: The clear housing lets you monitor your batteries at a glance, making assembly and troubleshooting easy.
- Digital LED Display: Real-time battery status display keeps you informed of remaining charge at all times.
- Dual Input/Output Ports: Features both USB-C and Micro USB ports for flexible device compatibility.
- No Welding Required: Tool-free, solder-free assembly with detachable housing and wire compensation support.
- Comprehensive Protection: Integrated overcurrent, overvoltage, short-circuit, overcharge, and over-discharge protection keeps your batteries and devices safe.
- High Efficiency: Synchronous switch discharge at 5V/2A achieves over 95% conversion efficiency, minimizing wasted energy.
Specifications
| Material | ABS (Transparent) |
| Battery Slots | 8 × 18650 (batteries not included) |
| Max Output Power | 22.5W |
| Output Voltages | 5V/1A · 9V/2A · 12V/1.5A |
| Discharge Efficiency | >95% |
| Ports | USB-C + Micro USB |
| Display | LED Digital Battery Indicator |
| Compatible Devices | iPhone, Samsung, and most USB-charged devices |
| Origin | Made in Mainland China |
What's in the Box?
- 1 × Transparent 18650 Power Bank Shell (8-cell)
- Note: 18650 batteries are NOT included. Please purchase compatible 18650 cells separately.
Notes
- Colors may appear slightly different due to monitor resolution variations.
- Minor dimensional differences may occur due to manual measurement.
For guidance on safely handling and storing lithium-ion batteries, visit the U.S. Consumer Product Safety Commission – Lithium-Ion Battery Safety.
Frequently Asked Questions
Q: Does this 18650 power bank case come with batteries included?
A: No, the transparent 18650 power bank shell does not include batteries. You will need to source eight compatible 18650 lithium-ion cells separately to use this DIY power bank case.
Q: What devices are compatible with this 22.5W fast charging power bank shell?
A: This DIY power bank case supports fast charging for a wide range of USB-charged devices, including iPhone models, Samsung smartphones, tablets, Bluetooth earbuds, and more — via the USB-C or Micro USB output ports.
Q: Is soldering required to assemble this power bank case?
A: No soldering is required. The shell is designed for solder-free, tool-free assembly with detachable housing and built-in wire compensation, making it accessible for hobbyists and beginners alike.
Q: What safety protections does this 18650 battery storage box include?
A: The case features integrated overcurrent protection, overvoltage protection, short-circuit protection, as well as overcharge and over-discharge protection for your 18650 cells, making it a reliable and safe DIY power bank solution.