Motorola Motoactv :: Battery Life, & Still Using GPS Speed With Sensor

However, after the latest update, the battery life, even when doing nothing, is terrible. I had it charged to 100% before I went to sleep last night and when I woke up the battery was dead and the watch was off. Before it would last a couple of days even if I went on a short ride.

I did recently pair it to a Garmin speed/cadence sensor. But the battery was dying, like I said, when I wasn't even biking.

Which brings me to my second question. I got the speed sensor because I hoped that instead of waiting for the GPS to catch up to when I am stopped, that the speed sensor (like the wired one I have on my actual bike computer) would know immeditely when I've stopped and not mess up my average speed by having the time keep tracking when I was standing still. My wired computer has pause and start down to a science. Why can't this? Why is it still using GPS for speed instead of the sensor? Cadence works fine, so I know it isn't a communication problem, I don't think, anyway.