3D Design File Download :
https://www.thingiverse.com/thing:5894950
Parts List (Affiliate Links):
1 x Aluminum Housed Resistors(50w 8 ohm) https://s.click.aliexpress.com/e/_DB7mtQ5
1 x Terminal Strip Screw (20A or 30A) https://s.click.aliexpress.com/e/_DEuZ94t
1 x Banana Plug to Alligator Clip Connector(1m) https://s.click.aliexpress.com/e/_De3Ji3T
7 x Banana Socket https://s.click.aliexpress.com/e/_DFfZ1tT
5 x Fuse Holders (5x20mm) https://s.click.aliexpress.com/e/_DmYdbk9
5 x Fuse Sets (5x20mm) https://s.click.aliexpress.com/e/_DDS7A3P
1 x QC 3.0 USB Charger Socket https://s.click.aliexpress.com/e/_DC6pBtL
1 x DC Buck Boost Converter https://s.click.aliexpress.com/e/_DFv5Cmp
1 x 2 Positions Connector Terminal(Small Type) https://s.click.aliexpress.com/e/_DCix2lr
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Silicone Wire : https://s.click.aliexpress.com/e/_DcvkL65
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1 x Switch(21mmx15mm) https://s.click.aliexpress.com/e/_DFT6LVx
1 x DC Power Supply Jack Socket Female https://s.click.aliexpress.com/e/_DFpIv2N
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Tubular Terminal https://s.click.aliexpress.com/e/_Dl4mZp7
Box Insulated Wire Connector https://s.click.aliexpress.com/e/_DldST6V
Crimping Pliers https://s.click.aliexpress.com/e/_DEvtIvf
Heat Shrink Tubing https://s.click.aliexpress.com/e/_DBmQ9nJ
Tesa Type Coroplast https://s.click.aliexpress.com/e/_De2kuZf