So what makes your chargemaster go crazy? Usually a text message during discharge will make mine drift .2-.3 grains. Usually just goes over desired amount. Well tonight my Facebook messenger went of and it caused my chargemaster to basically lock up. My target was 41.5 and it stopped at 38.7 and wouldn’t trickle, wouldn’t turn off, all buttons were unresponsive. Had to unplug and recalibrate. Is this normal???