I have seen in the forum that the 180 feature is not provided for the Battery Pro. It said that the mounting is in the centre of the back of the camera which is incorrect. It is closer to the bottom and therefore allows it to fit closer to the mounting surface - and eve in my case. In the absence of the feature is there a longer mount bolt available? This would provide sufficient space to rotate it the correct t way up
Will one of these work? There are also various length sizes on Amazon. Make sure it is 1/4” -20 thread.
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That was my first thought, too. 
Thank you for taking the time to poke around for an answer before posting! Welcome to the Forum, @rogerprc! 