iHaospace 5 Stück Boost Step Up 5V 1A USB Voltage Converter Stromversorgungsmodul Power Supply Module Lithium Battery Charge Protection Board 134N3P DIY Charger and Micro Port

Charging and discharging: 134N3P has built-in charging and discharging power MOS, the charging current can be set, the maximum charging current and maximum discharging current are 1A. Safety protection function: Constant over temperature protection, overcharge and over discharge protection, output overvoltage protection, output overload protection, output short circuit protection, etc. Charge status indication: Charging- The red light flashes while charging; Red light is always on, charging is complete. Discharge- The blue light flashes. Application: Batteries like Polymer ,18650 Lithium ,Cell Phone ,Tablet and MP3 Battery ect. Note: To connect with lithium batteries, it can only be connected in parallel with a voltage of 3.7-4.2V, not in series.