I was instructed to do so but to be honest i think the person got it wrong, should the pin from the voltage divider go into the AREF pin so that the reference voltage would be 1.5V to maximise resolution? If so, and even if not, how should I hook up the contacts to the Analog Input? From 5V to the battery and from the battery to A0 or should it be going to ground, sorry if seems stupid but Ive done all the research I can and this is all very new to me