In this video I will show you how I built this Amazing battery Power Bank. It's very small for its capacity and works very well. With the Type-c Fast Charging I have charged my phone (samsungA35) in just 1hour and 40 minutes from 0% to 100%.This module really deserves its batteries have the same Capacity, they're voltage and internal resistance were measured but I forgot to film it, so sorry for that. I hope you liked the video:) Components I used: 1X Power Bank Module(Ip5328P) 4X 18650 Li-Ion Batteries 3X 3W LEDs 2X 5W 10Ω ceramic resistors (to make a 5Ω 10W resistor) 1X On⁄Off switch