Step-Up Lithium Battery Charging Protection Board

Product Introduction:
- Input Voltage:  3.7V~5.5V
- Charging Current:  1A(max)
- Output Current:  1A(max)
- Output voltage:  5V  
- BAT Discharging Stop Voltage:  2.9V  
- Discharging Efficiency:  85%(input 3.7V output 5V/1A)

Features:
- Charging and discharging indication
- Internally installed charging and discharging power MOS  
- Preset 4.2V charging voltage, precision ±1%
- Max 8uA standby current
- Integration charging management and discharging management
- Intelligent temperature control and over temperature protection
- Integration output over voltage protection,short coircuit protection,overload protection
- Integration overcharging and over discharging protection
- Support trickle mode and zero voltage charging

When charging: red light flashing;
Full charged: red light light for a long time.