The Series 3 has better battery life than the Series 6 (from my experience owning both).
I think the difference is the Series 6 screen never fully turns off. I imagine disabling "always on" mode would likely push battery life much higher, but that's just a guess
Yeah I can easily get 2 days when I turn off always-on. Sometimes I do because the watch distracts me sometimes when its always on. But the screen is also bigger, that doesn't help.
