Why the overkill capacity battery? If it's 4wd you could run two matches on a 2.5ah battery counting on I guessed correctly in assuming that its running 550 size motors. As a side; I noticed your wheels are press fitted drectly to the gearboxes output shaft. I've never seen wheels attached like that work well. If you have a laythe or know someone who does it might be a good idea to make something like these to attach the wheels or you can buy them here I use this setup on all of my robots.
is this bot don't lost all razors in a fight before do a damage thought
For once the mods did something right