The first 2 weeks my battery life was terrible. It only lasted about 8hrs with normal use before wanting a charge. Then it consistently got better after every week, averaging about 12hrs. Now fast forward a few more weeks, about a month after purchase, I'm getting about a day and half on a single charge! I take it off at 8am every morning, and usually put it back on the charger at around midnight for overnight charging. On a few occasions, I was too lazy and would just charge it in the morning. Woke up at 8am and walked over to charge it, then noticed I still had about 50% left. So after 24hrs I still had only used about half my battery. Now I don't have to worry about waking up drunk somewhere on the Vegas strip and not having a way to call for a ride home. Very cool!