I received a replacement P2 yesterday, here in Africa. I am shooting a project and the one I brought stopped working (a discussion point for another thread). The replacement (new) P2 flew 2 flights, back to back. No problems. I brought it down to replace the battery. I put the FULLY charged battery in and started the P2 up. No problem. Attempted to take off and the engines only slightly increased in power from idle. I pushed the throttle stick ALL THE WAY up. No bueno. No take off. I put 3 different batteries in and got the same result.

Anyone every had this issue?

Wow, that's a bummer. The only thing I can say it check all the batteries. And do a restart on everything.