My very first flight with the H I also failed to lock the battery fully in place. I was being kind of gentle with the unit as it was brand new and it represented an important amount of money, I didn't do any aggresive flying, but I did raise it straight up to 60 meters.
Luckily everything went without incident, but I remember thinking to myself "Huh, it looks kind of weird that the battery sticks a couple millimeters outside of the machine".
Very soon I learned about mid air blackouts, and it was until then that I realized how lucky I had been, and that I had to push the battery all the way in until the outer edges met the shell, not just until I heard a click.
Hope you get your unit back on the air soon!