dateTime=1;

vBatt=2;

battData=Drop[Import["/Volumes/ProjectLibrary/900502.BenthicRover/Rover.Deployment/Pulse_62/dep-2013.06.19-04-pulse-62/battery_raw.csv"],1];

Length[battData]

DateListPlot[battData,{PlotRange->All,Joined->True,PlotLabel->"Rover Battery Voltage on Pulse 62",FrameLabel->{"Date","Battery Voltage (V)"},DateTicksFormat->{"MonthNameShort"," '","YearShort"}}]

DateListPlot[battData[[1;;86]],{PlotRange->All,Joined->True,PlotLabel->"Rover Battery Voltage on Pulse 62",FrameLabel->{"Date","Battery Voltage (V)"}}]

Show[DateListPlot[battData[[1;;86]],{PlotRange->All,Joined->True,PlotLabel->"Rover Battery Voltage on Pulse 62",FrameLabel->{"Date","Battery Voltage (V)"}}],DateListPlot[battData[[1;;86]],PlotStyle->{PointSize@Medium,Red}]]