Garmin edge 1040 firmware version 26.18. The battery discharges very quickly: 50% over 200 km (tested repeatedly). Of these 50%, the device worked the last 8-12% in power-saving mode. For comparison - on firmware 21.18, the battery discharged by 16% over 200 km. I use navigation maps, 4 screens with data, auto brightness is on, altimeter autocalibration is disabled, a heart rate sensor is connected. Live track, groupRide and Group Track are disabled. Phone and Wi-Fi are disabled. Autonomy has become extremely poor.
Also, during training on the tacx flux2 bike trainer, the gradient imitation suddenly disappears. Let's say I manually set the gradient to +4% or +7%, and the trainer doesn't change the load at all, as if the gradient is still 0%. The same thing happens if you open a real track - Garmin shows a positive gradient, but the trainer may stop simulating the climb.