I had low expectations when I bought the Series 3 because of what has been said in the past about the battery life but my findings are similar: I put it on in the morning at 7:30am and it's still got ~65% when I'm getting ready for bed. I took it off last night around 11:30 and it was charged back to 100% by 12:15.

I too had a Pebble Time and while that lasted seemingly forever, I'm very very happy with the Series 3's battery life and charge time.