Build a Portable adjustable power supply (built-in battery + external power supply)

This is a portable adjustable power supply, using the SK120X as a digitally controlled buck-boost converter, with an output voltage of 0-36V and an output current of 0-6A

It has 4 built-in 21700 batteries, and a switch controls power on/off and power supply mode

Part
- SK120X Digital Control Adjustable DC Buck-Boost Power Supply
- 21700 Lithium Battery 4-series lithium battery protection board （Overcurrent 10A, the larger the better to reduce heat）
- Type C buck-boost fast charger 4S
- Amass XT60E-F (Two pieces)
- KCD4 Rocker Switch
- 4MM Banana Plugs (Red and Black, 2 pieces for output)
- Power Indicator Board (16.8V, connect directly to battery positive and negative)
- M2x8 Screws（10 pieces, for fixing the charging board and back panel）
- M4x12 Pan Head Self-Tapping Screws（2 pieces, for fixing the handle）

3D File : https://makerworld.com/en/models/1849570