Step 1: Make Your PCB

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Step 2: Features

Input Power

7v - 60v Dc " Such a huge range "

Output Power

5V/5A - Very Stable Output

Smart Features

USB port 1 & 2 can identify your device for Fast Charging

Built In Protection

Short Circuit Protection
Over Voltage Protection

Step 3: Things You Need

Banggood

USB Charging HUB - Click
3S BMS - Click
4S BMS - Click " If you are going to use 4S "
18650 Battery - Click
XT60 Connectors - Click
Solar Panel - Click

Aliexpress

USB Charging HUB -
3S BMS - Click
4S BMS - Click " If you are going to use 4S "
18650 battery - Click
XT60 Connector - Click
Solar Panel - Click

Amazon

USB Charging HUB -
3S BMS - Click
4S BMS - Click
18650 Battery - Click
XT60 Connector - Click
Solar Panel -

https://www.utsource.net/ is an online platform for electronic technicians, Makers, Enthusiasts, Kids to find electronic components

Step 4: Charging Phone With Battery

I used a trusty XT60 male connector to connect to the blue terminal "see the polarity first"
And then I used my DIY 3S li-ion Battery to power this up
and then I used a USB cable to connect to my Phone
And this work just awesome