I'm very satisfied. The charging speed is fast.
DIY Power Bank Case for 18650 to 21700 Batteries
Price range: $6.79 through $10.31
Compatible with 18650/18700/20700/21700 lithium batteries.
- Fast charging output: 5V/2.4A, 9V/2A, 12V/1.4A
- Input voltage: DC 5V 2A/PD
- Durable ABS material with non-slip surface
- Easy assembly and battery replacement
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Estimated Delivery Time3–7 business days
Compact DIY Power Bank Case
This power bank case is designed for easy assembly and battery replacement, compatible with popular lithium battery sizes: 18650, 18700, 20700, and 21700. Its versatile design supports flat, pointed, and various battery types to maximize flexibility.
Choose between black or white ABS casing with a non-slip sun pattern texture that offers a secure grip and durable protection for your power bank components.
Fast Charging and Safety Features
Equipped with multiple fast charging outputs (5V/2.4A, 9V/2A, 12V/1.4A), this case efficiently charges your devices using USB interfaces while maintaining stable performance.
Safety is prioritized with built-in reverse connection protection to prevent damage to the motherboard. Over-voltage and over-current protection circuits ensure secure operation during battery use.
- Multiple interface options for convenience
- On/off button shows remaining power on click
- Long press activates built-in flashlight
Flexible Battery Configuration
The case supports single or dual battery configurations, allowing users to mix battery capacities as needed. A reverse battery IC safeguards the device from incorrect installation, providing peace of mind for DIY power bank projects.
- Use one or two batteries interchangeably
- Works with various lithium battery models
Key Specifications
- Input voltage: DC 5V 2A/PD
- Fast charging output: 5V/2.4A, 9V/2A, 12V/1.4A
- Battery capacity dependent on installed cells (~10000mAh)
- Material: ABS with non-slip sun pattern finish
- Colors available: White, Black
What's in the Box
Includes one pre-assembled and tested mobile power supply kit without batteries, ready for customization and use.
- Mobile power supply kit *1 (batteries not included)
Discussion
4.5
Based on 18 reviews
Cheap version of a power bank, price is inflated
The product is as described. the shipping time is fair. so far, i do not recognize any defect. satisfied.
Superb. has a flash light in case of emergency. has charge indicator in 25% increments wanted to discard the batteries from vape devices after i quit but now i repurposed them.
A nice power bank, just right for a couple of batteries that are lying around unused, they will work in the power bank and charge batteries for flashlights conveniently, fast charging works, the flashlight can shine for a whole month straight.
