LOW BATTERY LED blinks occasionally - SimpliFiber Pro Source

If you see the LOW BATTERY LED on the remote flicker on an off every 8 seconds as shown below, it indicates that the Auto Power Off feature has been disabled.

            
 
 
If the batteries need replacing, you would see a constant blinking LED:

            

The expected battery life is 40 Hrs for the multimode source and 30 Hrs for the singlemode source.