The dimness issues on the Apple Watch Ultra 2, particularly at night, can potentially affect battery life. Users have reported that the automatic brightness adjustment feature, which dims the display in low-light conditions, may lead to increased battery consumption if users attempt to override this setting to keep the screen bright.
When users disable the auto-brightness feature to maintain higher brightness levels, the watch's display remains at maximum brightness, which can significantly drain the battery more quickly than when the auto-dimming function is active. One user mentioned that while keeping the screen bright all the time would be preferable for readability, it would also lead to faster battery depletion[3][6].
Additionally, some users have noted that even with the brightness set to maximum, the watch still appears dim in low-light conditions, leading to frustration and the perception that the watch is not functioning as intended. This situation suggests that while the dimness issue itself may not directly cause battery drain, the need to adjust settings to maintain visibility can lead to higher battery usage[1][2][4].
Overall, while the Apple Watch Ultra 2 is praised for its battery life under normal conditions, the brightness issues at night may lead to unintended consequences for battery performance when users seek to keep the display adequately bright.
Citations:[1] https://discussions.apple.com/thread/255148386
[2] https://discussions.apple.com/thread/255155033
[3] https://www.reddit.com/r/AppleWatch/comments/16uz75a/apple_watch_ultra_2_brightness/
[4] https://discussions.apple.com/thread/255223373
[5] https://discussions.apple.com/thread/254402565
[6] https://forums.macrumors.com/threads/apple-watch-ultra-2-very-dark.2403934/
[7] https://www.cnet.com/tech/mobile/apple-watch-series-9-vs-ultra-2-dont-get-the-wrong-one/
[8] https://discussions.apple.com/thread/255183070