Thanks. Pretty sure I have had that happen with it set there. But it has never happened with it set very low like, 2.5v. I need more time on the water with it to be sure however. Anyway it usually happens immediately after starting a run so there is never any data logged which sucks. The normal runs there is never any sign of low voltage, not even close actually. Do you think the logger is fast enough to register the super short spikes? I am hoping the LVC is just more sensitive on mine.