Lipo runs hot why?

[superek4]

I was racing today at my local track with a new 4s 4100mah@30c for a mins race my batt was flat till 3v per cell.

And it was hot about 60degree to 65degree no bloating or dead cells.

I geared my truck at 38-40mph.

Could it be the batt cant handle the setup?

This is the first time my Lipo ran so hot.

Btw I was using a 2000kv motor from hw with ezrun 150esc.