This is admittedly a bit off topic, but I am running out of ideas:
During long distance bike rides, I used to charge my Z5C using my bike's dynamo hub via a special circuit (
www.forumslader.de). This has worked flawlessly for years, and I had no problems keeping the phone's battery completely charged. This year, the charger barely manages to prevent the battery from discharging, while OsmAnd is running with the screen switched off except for turning instructions; to save power, I always have the phone switched to airplane mode. The phone is very slowly charged when I keep the screen turned completely off for hours, which is not useful, as I need Osmand for navigation.
I have measured voltages from the charger, which are in the normal range, the phone's battery is in good shape, and I have not had any
issues with the battery's endurance.
It just occurred to me that the only change to last year is an upgrade to LineageOS 17.1 (coming from 15, if I remember correctly). I installed Advanced Charging Controller (ACCA), trying to limit the maximum charging current to various levels under the asumption that fast charge mode would request to much power from the dynamo, but to no avail.
Tomorrow is going to be my last day with internet access, so I cannot risk any major updates or flash a new ROM, but I was hoping that people might suggest any tweaks or settings I could try with the existing ROM, or maybe Berni would know if there are any changes to charge management in comparison to older ROMs.
Thank you - Matthias