More improvements to battery monitor.

usr/local/bin/battery_monitor.py

@@ -101,7 +101,7 @@ class BatteryMonitor:
             return
             
         try:
-            subprocess.run(['spd-say', '-w', message], check=True)
+            subprocess.run(['espeak-ng', '-v', 'en-us', '-a', '200', message], check=True)
         except Exception as e:
             logger.error(f"Speech error: {e}")
     
@@ -125,7 +125,7 @@ class BatteryMonitor:
                 logger.critical(f"Battery at {level}% - initiating shutdown")
                 self.speak("Critical battery level. System shutting down now.")
                 time.sleep(2)  # Give speech time to complete
-                subprocess.run(['sudo', 'poweroff'], check=True)
+                subprocess.run(['systemctl', 'poweroff'], check=True)
                 return
         
         elif level <= 5 and not self.warned_5: