Any Jawbone 2 owners - what's your battery life? I am on my second Jawbone in 10 days. The first one I bought I returned within 3 days because the charge would only last 12 hours: if I charge it overnight, the headset would be dead by evening (just on standby, no talking). I exchnaged it, and I have the same issue with the new headset. With reported standby time of 7-8 days, I'm wondering what I'm doing wrong. After a full charge, it only last 12-24 hours on standby (not connected to phone). Could you help me understand what may be happening here? I don't think I could get 2 defective units in a row. To compare, my original Jawbone could stay on for days (disconnected), just sitting there blinking. I'm not doing anything differently with the new one, and yet the result is radically different. Any help would be appreciated. Thanks!