However, you can save battery life by disabling Bluetooth when you don't need access to your BlackBerry e-mail, calendar, contacts etc. And RIM has promised native e-mail and PIM apps for the PlayBook some time this summer, so it shouldn't be too long before you can access these apps without the need for an active Bluetooth connection--assuming your BlackBerry administrator chooses not to continue using Bridge, which can provide an added layer of security, since no BES information is ever stored on a PlayBook that uses Bridge for access to BlackBerry Enterprise Server (BES) data.
To disable PlayBook Wi-Fi, simply click the Wi-Fi symbol in your PlayBook's home-screen system tray, located in the upper-right corner of your display, and then tap the Wi-Fi on/off button so it reads Off.
The process for disabling Bluetooth is similar; just tap the Bluetooth icon in your PlayBook's system tray, then tap the on/off button into the off position.
Keep PlayBook, BlackBerry Smartphone Close When Bridged
If you're like me, you keep your BlackBerry PlayBook tablet and RIM smartphone connected, via BlackBerry Bridge, at all times, for continuous access to BlackBerry mail, calendar, contacts, etc. But because Bridge employs Bluetooth to connect your tablet and smartphone, you may see notably less PlayBook and smartphone battery life when connected via Bridge--especially if your tablet and smartphone aren't particularly close to each other or they're separated by a wall or other obstacle when Bridged.
It's a good idea to keep your smartphone and tablet relatively close while they're Bridged, since it can take more battery life to transfer data back and forth between the two devices when they're any distance away from each other.
Your tablet and smartphone may also occasionally lose the Bluetooth connection if they're too far apart or the signal can't travel through a particularly thick wall, for example, which could lead to even more battery drain as the devices attempt to reconnect.
Charge PlayBook Often, Use "Rapid" Charging Accessories