I have a 12v lithium battery that I tried to plug in but I think it is currently too drained to power it. when I plugged in the power supply, it went into a state where the power light was flashing. I think we would need a charging board to go with a battery like the RPi uses. It could be plugged into the power header. not sure if we will be able to get battery charge level though.
they have a case called the playbox that fits their touchscreen. honestly it is likely cheaper to get that verses printing your own. the current issue is we don't have a battery for this.
I'm asking a friend if the battery I have is a 12v battery.
What I hope to achieve with a custom case is bundling the power supply so the node can be portable (battery) and then plugged into a socket to charge it. It could be a good point of reference for prototyping though.
the battery I was trying was only a 3.7v battery so that is why it didn't work.
I have actually bought this board to install Debian on it, install Bitcoin Core and c-lightning and run these 2 nodes on it! But I'm still getting used to things.