https://hackaday.com/2022/08/30/an-amstrad-portable-you-wont-have-seen/
https://youtu.be/3FZUhgCv91Y
I just saw that one. Excellent!
Here's the recipe:
https://hackaday.io/project/187051-the-amstrad-cpc-portable/details
Now I know what to do with my 464 with broken datacorder. ::)
Posted that a year ago already, but good to see it again.
As far as I know this one is the only 'portable CPC' project which ever got finished and runs successful.
Would be interested in how long it actually runs with the battery pack.
With its 1Amp power draw (maybe a little bit higher with the screen and the expansion), it will eat 5Wh per hour.
a 20000mAh/75 Wh you should be able to run it for 12 hours. Not to bad.
But if you use this normal battery packs like this https://www.amazon.de/Vida-Powerbank-Ladeger%C3%A4t-Akkupack-Dual-Ausgang/dp/B09Q8DS77Y with 5000mAh it will be only 3 hours.
Still not to bad for a notebook :-) However the compute power is pretty bad for nowadays standards.