ST6845-C Li-Ion Cell Charger with 5V Step-Up Converter Arduino

Step-Up converter and charger for lithium batteries (e.g. 18650). The converter is used in Power Banks. It has protection against excessive discharge of batteries.
Specification:
- Voltage on terminals B +, B- - 3.7 - 5V
- Micro USB socket voltage - 5V
- USB socket voltage 5V
- USB socket current - 1A
- Maximum battery charging current 1A
- Minimum battery cut-off voltage - 2.9 V