This hack simply disables the Power Saver Notification that appears on HTC Jellybean Sense 5.0 devices.
$ adb shell
$ su
$ pm disable com.htc.htcpowermanager/.powersaver.PowerSaverNotificationReceiver
$ su
$ pm disable com.htc.htcpowermanager/.powersaver.PowerSaverNotificationReceiver
Reboot device when finished. Power Saver Notification should not be disabled in your drawer without disabling Power Saver completely.
The simpler solution would be to download Jmz Power Saver Disabler.