ERHIndia dc Ultra Small 5v Micro USB Power Bank Charging Module Circuit Board Single USB Step Up with Mobile Charging Data Cable and 18650,1200mAh Electronic Components Electronic Hobby Kit

Product description Features: 1. Charging and discharging indication, based on advanced HT4928S IC 2. Internally installed charging and discharging power MOS 3. Preset 4. 2V charging voltage, precision ±1% 4. Max 8uA standby current 5. Intelligent charging management and discharging management 6. Intelligent temperature control and over-temperature protection 7. Intelligent output over-voltage protection, short circuit protection, overload protection 8. Intelligent overcharging and over-discharging protection 9. Support trickle mode and zero voltage charging 10. Auto on /off with load detection Light display: Charging: When charging, the indicator LED red and blue flash alternately (blue light continuous on means fully charged) Discharge: Blue light on and starts flashing when battery voltage drops below 3. 2V (low battery) and it shuts down automatically when battery voltage reaches 2. 95V.