After running the device over the weekend, sending reports every hour, we finally got some battery data from the new Stalker 3.1. While there is a noticeable improvement (roughly 25%), taking into account the effect of our solar panel during cloudy weather, we were still losing 0.66% battery per hour on average. During the summer, we'd easily make up for lost power via solar, but it just won't suffice in these long winter days.

That said, we are yet to test where the power loss is coming from on the new board - for all we know it could be mostly sending! More data coming soon.