134N3P Boost Step Up Power Mod...

Description Specifications: Circuit board B- connects power negatively, B connects positive. Don’t inversely connect, it will result in the burning of the board. Make sure there is insulation between power and circuit when installing the battery 1A output is not continuous current, it changes according to USB connecting load, automatic current output as per load If a battery is connected incorrectly, the reverse polarity will burn the circuit. So, make sure to check the battery polarity when connecting. Input Voltage: 3.7V~5.5V | Output voltage: 5V | BAT Discharging Stop Voltage: 2.9V Charging Current: 1A(max); Output Current: 1A(max); 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; Support trickle mode and zero voltage charging Intelligent temperature control and overtemperature protection; Integrated Output overvoltage protection, short circuit protection, overload protection, overcharging and over-discharging protection