I have to get data off an old Zuk Z2 Plus that was working when it got replaced by a new phone and left lieing around for a year or so. Now it does not boot any more. When I plug in power, the screen briefly lights up, shows a 0% charge, vibrates, turns off and then repeats the same thing.
If I press the power button, the boot screen shows up for about 1-2 seconds (about the same time as the charge indicator), then the phone vibrates, turns off, and repeats the charge indicator loop.
I figure, the battery is deep-discharged (0V), so the charge circuit powers up, finds that the battery does not have any voltage at all and then resets.
I could replace the battery, but spending €30+ on a new battery for a phone that will be discarded afterwards is a bit of a waste.
It has a very proprietary battery connector, so attaching some random lipo to the battery port is a bit hard as well.
Do you have any good ideas on how to fix the situation?