5V Step-Up Powerbank Module Lithium Battery Charging Protection Board USB For DIY Charger 134N3P Lithium Battery Charging Protection Board Boost Converter LED Display USB For DIY Charger 134N3P High-Quality USB iron with Cheap display port video card and Integrated Circuits.
BAT Discharging Stop Voltage: 2.9V.
Discharging Efficiency:85%(input 3.7V output 5V/1A).
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 overtemperature protection.
Integration output overvoltage protection, short circuit protection, overload protection.
Integration overcharging and over-discharging protection.
Support trickle mode and zero voltage charging.
When charging: red light flashing.
Fully charged: Red light glows for a long time.