More weird stuff is happening.
So I did the battery drain test, the result of which I reported back yesterday. Afterwards I was not able to recharge the device. No matter what I did - connected to several power supplies or not - it just would turn of immediately. I had a similar issue a couple of days before but it resolved itself overnight when I had the Forma connected to a powerbank. This wouldn't work this time. Also the "It is shows to be charged all the time" icon changed to the opposite: Now it won't get charged, no matter what I do.
Tried to charge it since yesterday without any success. Today I opened my Forma and hooked its battery terminals directly up to my lab bench power supply. The device now would boot fine and show a full battery. That was expected. Unexpected was though that after disconnecting the power supply - lo and behold - it still kept showing a full battery. I was able to reboot it and it still showed a full charge.
I did the full manual reset. Right now the battery discharge seems to be somewhere in between normal and a little on the higher side. Still have to verify that. But I cannot recharge the Forma using the USB connector anymore. Also the device is not recognized anymore when I hook it up to my PC. I got the 5 Volts from the USB connector on the PCB though. By now I am pretty frustrated by this thing.
I bought the Forma in mid of 2019. And I probably already would have upgraded would there be a worthy successor that I could buy without compromises, since my Forma had to dead lines of Pixels since half a year. But unfortunately the Sage is pretty much a sidegrade compared to the Forma while having worse battery life and a considerably higher weight. Also I am reluctant to again spend 300 bucks for a reader that maybe again barely survives 3 years unscaved. The Libra 2 has a very pleasant price point but lacks that one inch of screen real estate which I guess I would miss when reading PDF magazines. And the Elipsa is probably a little to big and heavy. So no real easy upgrade option. I actually only want a Forma with USB-C and maybe a bigger battery
