Battery powered lab bench powersupply, with a max output of 36V/5A and 80W total.

It has a battery voltage meter on the right side and a 60mm fan on the left, that is connected to the fan output of the XYS3580 module.

The battery balance connector is just a simple header. It has two male XT-60 connectors, one for powering the powersupply module externally, the other is for charging the battery. In my setup there are two switches, one for selecting the power source, the other is for turning on/off the battery. There is also a switch for turning on/off the battery voltage meter.

It's a bit of an overkill, but everything that carries power is connected with 2.5mm^2 stranded wires. The battery is detachable, it is using deans connectors.

There is more space above the batteries for anything else, it would be possible to fit a 4S6P pack in there for more capacity.

The handle bar is optional, it is Tarjak's work from thingivere. You need to print it at 83% scale in order to fit the pre-made holes on the lid.

I have also added some text on the sides so they are not so empty, it is modifiable in the sketches. It was made using Fusion360 but I have exported it to .obj .ipt .stl and .f3d formats so more people can customize it.

After all it is just a box, you can use and customize it however you like.

If someone would like to replicate my version, here are the parts, most of it is from Aliexpress:

XYS3580 powersupply module (https://www.aliexpress.com/item/1005001543632600.html)

2x male XT-60 connectors (https://www.aliexpress.com/item/33061763696.html)

2-state power switch (https://www.aliexpress.com/item/4001165660255.html)

3-state power switch (https://www.aliexpress.com/item/4001165470043.html)

Battery voltage switch (https://www.aliexpress.com/item/32809087410.html)

Battery voltage meter (https://www.aliexpress.com/item/1005001594486166.html)

18650 brackets (www.aliexpress.com/item/1005001813582241.html)

Balance headers (https://www.aliexpress.com/item/32993182990.html)

4mm banana connector sockets (https://www.aliexpress.com/item/32909566570.html)

Deans connector (www.aliexpress.com/item/4001203770096.html)

Some soldering, optionally spot welding and heat shring tubing is also needed.

For stregth, print the box with 4 perimeters and the lid with 4 bottom and top layers. Infill doesn't matter. No supports required.