I turn my bluetooth on when I need to bridge it to my phone, and my wi-fi only when I need it (usually at home)... And my battery life is about ~6-7 hours
My BlackBerry smartphone and tablet are bridged constantly and WiFi is only enabled when I need to use it. On average the BlackBerry PlayBook is not fully deplete within any 24-hour period. Now my recreational-use BlackBerry PlayBook lasts approximately 5-6 hours when streaming movies via WiFi using the Movie Vault application as a point of reference.