Large Power Bank

Large, but yet movable power bank. I have built it with intention to use while camping where access to power lines is limited.

While inside components can be changed to pretty much anything, in my build I have used:
* 2 buck converters, which reduce the voltage to 5.3V (up to 4 amps each)
* 1 buck converter, which reduces the voltage to 12.6v (up to 4 amps)
* BMS board (5S)
* Input lines for charging (21V)
* 5 usb ports for output of 5V
* Voltmeter
* Switch for On/Off
Output line for