Power Puck without battery holder?

Thank you Gordon,

when I use a single E.getAnalogVRef() it returns a much to high value (measured 332 with multimeter). But when I add multiple values and check average, it gets lower the more I use, e.g.:

E.getAnalogVRef() = 382
( E.getAnalogVRef() + E.getAnalogVRef()  + E.getAnalogVRef() ) / 3 = 274
( E.getAnalogVRef() + E.getAnalogVRef()  + E.getAnalogVRef()  + E.getAnalogVRef()  + E.getAnalogVRef()  + E.getAnalogVRef()  + E.getAnalogVRef()  + E.getAnalogVRef()  + E.getAnalogVRef()  + E.getAnalogVRef()) / 10 = 236

How come? Shall I make a delay between?