On Saturday used the phone for playing groove music, made a few calls, and sent a few texts. Sunday the phone was idle for most of the day. On Monday I played music for about 3 hours, and made a few calls. A very light load on the phone.
During a regular work day, when I stream music all day long via Bluetooth, and use the phone frequently for both texts, calls, and web browsing, when I plug it in at night, (typically 10 hours after the last charge), the phone usually indicates that I have 18 or so hours left.
The only thing that seems to drain the battery the most is when I download music to my sd card. So I always plug the phone in when I do that.
I love the battery life of my 950 xl!