after 22 flights I broke my original battery hatch last night. It's still usable but I have to use a screwdriver to get it out. Yesterday was the first time with no wind at all in my area in a long time. Having no wind makes landing the plane much harder. It comes in much hotter. I had my spare battery hatch and the first thing I noticed is that it is not in nearly as tight as my original hatch. Before breaking this hatch I have never had a battery ejection on landing but my first landing with the new hatch and the hatch came right off. I think I'll go get another hatch and just use the original until I get a new one.