I plan to build simple RC car/robot with "2WD Two Wheel Drive Round Double Deck Smart Robot Car Chassis Kit For Arduino". I couldnt find the exact one I have, but I assume they are all pretty much similar. Those two "gear" motors should have voltage 3-12V and "eat" between 70 mA to 250 mA (as per https://www.tindie.com/products/upgradeindustries/-dc-gear-motor-and-wheel-for-robots/)
Last piece of puzzle I need is sufficient battery.
I normally use powerbank and simply connect USB to Pi, but that is too heavy and I don't need it to last for hours..
Tutorials I found generally used non-descript baterries to power all this stuff or even separate one for motors and Pi.
Could I possibly use classic AA batteries? Four of them would provide 4,5V, is it enough for Pi?