Product Name: 5V 2A Smart USB Charger 18650 21700 Li-ion Battery Charger BoxType-C Power Bank Case DIY Digital Display Cell Phones Powerbank

Features:
- Charge your devices on the go with this versatile power bank case
- Includes a digital display for easy monitoring of battery levels

Specifications:
- Input: 5V 2A
- Compatible with 18650 and 21700 Li-ion batteries
- Type-C port for convenient charging
- DIY power bank case with digital display
- Ideal for charging cell phones and other devices
- Compact and portable design
- Other specifications: Easy to assemble and use

Package List:
1. 5V 2A Smart USB Charger
2. DIY Power Bank Case
3. User Manual