22.5W Fast Charging Power Bank Case for 21700 Cells
22.5W Fast Charging Power Bank Case for 21700 Cells
22.5W Intelligent Fast Charging Power Bank Case
Power up your devices at maximum speed with this 22.5W high-efficiency charging case designed for 21700 battery cells. Built from durable ABS + PCB materials, this smart power bank shell delivers broad compatibility across smartphones, tablets, earbuds, and other USB-powered electronics — keeping you fully charged whether you're commuting, travelling, or working on the go.
Made in Mainland China.
Key Features
- 22.5W Fast Charging — Dramatically reduces charging time for compatible devices with high-efficiency power delivery.
- Dual or Quad Cell Configuration — Supports 21700 × 2 or 21700 × 4 cell layouts (battery cores sold separately) for flexible capacity options.
- Wide Input/Output Compatibility — Input: 5V/2A, 5V/3A, 9V/2A, 12V/1.5A | Output: 4.5V/5A, 5V/3A, 9V/2A, 12V/1.5A.
- Built-in Safety Mechanisms — Integrated overcharge and overheat protection for secure, stable charging every time.
- Sturdy ABS + PCB Construction — Engineered for reliable performance across daily and travel use.
- Available in Black or White — Choose the colour that suits your style.
Who Is It For?
Perfect for busy professionals, frequent travellers, and multi-device users who need a dependable, portable power solution. Whether it's a daily commute, a business trip, or an outdoor adventure, this charging case ensures your electronics stay powered throughout.
Specifications
| Materials | ABS + PCB |
| Input | 5V/2A | 5V/3A | 9V/2A | 12V/1.5A |
| Output | 4.5V/5A | 5V/3A | 9V/2A | 12V/1.5A |
| Max Charging Power | 22.5W |
| Cell Compatibility | 21700 × 2 or 21700 × 4 (not included) |
| Colour Options | Black, White |
| Origin | Mainland China |
What's in the Box?
- 1 × 22.5W Fast Charging Power Bank Case
- Note: 21700 battery cells are NOT included.
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Frequently Asked Questions
Q: Are the 21700 battery cells included with the fast charging power bank case?
A: No, the 21700 battery cells are not included. The package contains only the 22.5W fast charging power bank case shell. You will need to source compatible 21700 cells separately — either 2 or 4 cells depending on your chosen configuration.
Q: What devices are compatible with this 22.5W charging case?
A: This power bank case is compatible with a wide range of USB-powered electronics including smartphones, tablets, Bluetooth earbuds, and other devices that support standard USB charging protocols. Its multi-voltage output (4.5V–12V) ensures broad device compatibility.
Q: Does the power bank case have overcharge protection?
A: Yes. The case features built-in safety mechanisms including overcharge and overheat protection, ensuring safe and stable charging for your connected devices.
Q: Can I choose the colour of the power bank case?
A: Yes, this charging case is available in Black and White. Please select your preferred colour option at the time of purchase.
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.