What SPOT did not make very clear at all is that the unit works fine, it just appears to be running out of battery too quickly if you have an affected unit, but in fact will work fine for the normal period. Of course, that could get you in big trouble since that run time is variable depending on a variety of factors. You depend on that flashing red LED to tell you it's time to change the batteries or to reserve the remaining battery for a possible SOS.