I was surprised to see that the 1050 battery life actually went down compared to the 1040. I understand the brighter screen, but battery technology and tech reducing power demands is increasing pretty rapidly.
From Garmin, it appears the 1050 is 20-60 hrs depending on use, while the 1040 is 35-90 hrs.
Both of those are way more than I would currently need, but I dream of doing much longer multi day events.. I’m sure I’ll be upgrading head units before then anyways.