Make your own 5V (Approx) power bank from single-cell Li-po or Li-ion battery (18650 or 14500) with this Booster and Charger Power Bank Module. It is based on 134N3P IC.
It comes with UBS A Receptor at one side (output) and another side is the USB Micro B receptor for the input charging source.

Features:

• 1A (Approx) Power Bank Module

• Support Single Cell Lithium Battery, including Lipo and Li-ion

• Support 18650 and 14500 Li-ion battery

• Charging and discharging indication

  • Charging: RED LED Blink fast

  • Full Charge: RED LED Blink Slow

• 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

• Supply Voltage: 3.7V~5.5VDC

• Maximum Charging Current: 1A (max)

• Output Discharge Voltage (Boost): 5VDC (Approx)

• Maximum Discharge Current: 1A

• Battery Cutoff Discharge Voltage: 2.9V

• Discharging Efficiency: 85%

• Dimension: 23mm x 18mm x 10mm

• Weight: 3gm