I had mine "false cutoff" while I was using the included AC adapter. I switched over to the DC plug and clipped it onto my charger's 12V power supply and haven't had a problem since. I'm guessing the included AC adapter is junk and doesn't have the cleanest output voltage. Enough ripple in the power supply of a device that constantly monitors voltage makes it not work right.
Damon Palm's 2011 Race Rigs (the ones that have all the guts in them):
Thump RC 4 stroke "GSC10"
X-Factory X-6 Squared
Traxxas Slash w/ STRC LCG conversion
THUMP RC -The only 4 stroke race conversion-