@paulrickards Excellent work! Goodness, that's looking super clean. I've been working my own portable computer based on a Pi 5 -- though, er, it's still most certainly at the casing-made-of-balsa phase, as I got it to a presentable point and then switched gears to an RP2350-based digital watch. Instead of a higher-discharge single battery, I went with four 3Ah batteries connected in parallel, then used two sets of them for two AmpRipper 4000 chargers: one for the Pi 5 itself, another for the USB hub that powers the monitor and any other connected components. It works, but ideally I should be putting in parallel battery managers as well too. Also now that I have more experience with I²C and SPI, I should implement battery stat readers from the chargers. [I'm also planning to combine the output from the two AmpRipper 4000s with an LTC4370.] I did end up going for an HDMI monitor instead of a DSI one, since there were a greater variety of HDMI monitors that were suitable for daily driver use. I tried to use adapters to run HDMI signals over ribbon cables, but the ribbon cables I was using were just not durable at all -- so yeah, regular cables it is. But, yeah, this system has been working well as a primary computer! https://woof.tech/@Berto/114883167574533511 [Pictures of the front are a bit further back in the thread]