Battery tester/discharger

Hi all in the forum!

This is my first post after some lurking..I'm going to ask all kind of informations about something I would like to do with Arduino. I'm good with programming but still newbie with electronics, but it's something I would like to start with.

So please, any kind of advices are welcome!

What I would like to do is a battery tester as first but also discharger.

Where should I start?

Best regards, Sal

I've recently started a thread you might find usefull: http://arduino.cc/forum/index.php/topic,81874.0.html