In short, user has 2 devices, one on `v6.12`, one updated to `v6.13`. The `v6.13` device, when hitting charge control limit, will then not maintain that level, instead it disabled the charger entirely, causing the battery to drain down 10% at which time the charger re-activates. So it will go through a constant charge / discharge cycle with this 10%. https://community.iode.tech/t/regression-with-charging-control-after-update-to-iodeos-6-13-on-shiftphone-6mq/7848?u=rik