I'd like to have a bigger battery power my arduino project. Ideally it would run for several days (or longer) without charging. There is a large power requirement with motors (and motion sensors), so I was thinking of using something like motorcycle batteries.
I'm **very** new to electronics (not programming), and I'd like to know what is involved with this. Is it simply a matter of a voltage divider with resistors or something else?
I was also considering setting up two or three batteries in parallel, if that's possible.
Realistic or silly?