What kind of DC motors + battery do I need for my heavy robotic tank project ?ty

MarkT:
30 kgf.m at 418 rpm is a massive figure, bears no relation to reality. about 13kW of power in fact.

The power needed to propell 35kg up a 45 degree incline at 1 m/s is 240W (not including losses),
so I suspect a sensible power requirement is more like 500W than 13,000W...

If the wheel radius is 5cm (guess), with 500W mechanical power, then 1m/s equates to 190 rpm and 25 Nm
of torque (total for all drive wheels).

So what top speed do you want?

I am building this robot tank project to make demonstration for my final year project in the university. I didn't think in much detail before. I don't want my tank to be very slow but in a normal speed and pass the slope obstacles easy at 45 degree. What is your suggestion for me ? I will buy the gear dc motors from this website: MOTION - Motors & Accessories - HD Premium Planetary Gear Motors - ServoCity , I will be happy if you help me to choose the correct one, thank you.

What kind of Li-po battery do you suggest, according to the dc motor you will give advice to me ? and I plan to use 4 dc motors this time; because the tank tracks are separated between each other on front and back ones already. I will not do the same mistake with my 1st self robotic tank.

Thank you very much for replying and helping me too.