What is the Pinout of the Battery Port on my Fos/4 Panel Fixture?

Fos/4 Panel originally shipped with a 4 pin XLR for battery power. In April 2020, that was changed to 3 pin due to consumer demand. 

The pinouts for both the 4 and 3 pin connectors are below:

Fos/4 fixtures have reverse polarity protection, however if polarity is reversed the fuse on the DC power board will blow.