I installed ultrasn0w to fix the 1 signal bar issue (I'm on AT&T), it murdered my battery. I can usually go 3 days without having to charge. I barely make it a full day. In 2 hours of standby it went from half battery to 20% warning.
Removed it and now the phone lasts forever so 4.3.1 did add some extra battery life.
Removed it and now the phone lasts forever so 4.3.1 did add some extra battery life.