So I revived today a third battery for the p4. Happy days. Plugged her into the ax and updated the battery's firmware. Turned off the phantom put battery away and inserted another battery because I wanted to check some
Options.

Turned on the phantom and the gimbal started going crazy up down spinning around like mad really viciously.

Turned off the pahntom pulled the battery couldn't see any issues. Pushed battery back in and turned phantom back on whilst having a heart attack and it was all fine.

Was it just a one off weird thing or should I be worried.

One off weird thing. Had some pretty weird **** happen quite a few times when firmware was out of sync.