The CX2 can't handle wind very well at all outside, so fly on a quiet day if using outside!
The batteries last 10-15 minutes, I have quite a few spares some genuine ones, some flightpower ones and also some DNpower - always have a few charged.
Spares are easy to get hold of, and not too expensive (depending how much you crash!) I've got the Xtreme motors in mine and also , Xtreme landing skids (never break!) and graphite tail boom set which is supposed to help when flying outdoors.
I haven't really used mine for a few months, but will get back around to it soon!