KEHIPI 20PCS Boost Step Up 5V 1A Power Supply Module Lithium Battery Charge Protection Board 134N3P DIY Charger USB and Micro USB Port with LED...

Input Voltage: 3.7V-5.5V. Output Voltage and Current: 5V 1A. Internally installed charging and discharging power MOS. Safety protection function: Constant over temperature protection, overcharge and over discharge protection, output overvoltage protection, output overload protection, output short circuit protection, etc. Applicable to manifold batteries such as Polymer, 18650 Lithium, Mobile Phone and Tablet Battery etc 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.