Hello world! I'm currently building an Arduino controlled RC car. I've bought 8x AA 2450 mAh Ni-Mh batteries, which I would like to power the entire RC car. My problem is how I should protect the batteries from undercharging. From what I've heard it's safe to discharge Ni-Mh cells to 1.0-0.9v. I know that the Arduino can't measure its own supply voltage via the analog pins. My idea is that I'll take the last battery in the series of eight and connect it's plus-pole to an analog pin on the Arduino and then read the voltage. Is that a good idea? I'm thinking that maybe the last cell I've connected to the analog pin might get discharged a bit faster, or what?
Thanks in forehand for answers and tips! ;D