I've looked up the "alternating controller lights" issue and found that this is typically an indicator of low battery. However, when I check the Xbox menu, I see that I still have two bars worth of power left – I expect most electronics to not bother me until one or zero bars.
The battery, charger, controller, and console are all barely a month old and all Microsoft brand. So it's relatively unlikely that I'm dealing with faulty hardware.
What else could be causing this error condition?
Best Answer
The 360 remote begins the low battery alert at two bars, then increases the frequency of the flashing (as well as disabling vibration) at one bars.
Your controller is fine, it's just hungry.