About 2.6 kg.
It seemed allright, though I didn't fly long before the crash. It was the 1st time I was flying with the 11.000 Lipo. Before I was using a 5000 and was just under 2.4.
I got the 3s based on ecalc, for my 10x3.3 T-motor props. I got the 4S for the smaller props, but didn't have...