can i use a 4800 lipo batt on a stock co27 motor

Over kill but yes or at least I have and had no trouble.

as long as its a 2s lipo I dont see a problem running it. I overkill all my motors with voltage with no problems so, I don't think MAH would harm you at all.

As I mentioned earlier, as long as the voltage is within reasonable levels you can use a 500,000mah battery and it wouldnt make a difference to the motor.

Actuallt using a 500,000 mah would wear down the brushes. Do not go more than 450,000mah lol

shoot, I just installed a 451,000mah battery! No brush issues yet but, I've been running this pack non-stop since last Wed and no voltage drop yet! haha

and the battery weighs 17 lbs