I am not having aircraft battery readings on my goggles. It shows NA (Not Available). I'm on latest Googles Firmware and modded Mavic Pro Firmware v1.03.400 (with all the bells and whistles) also running FC Boost.
Best chance for help on a problem with modified firmware is with the programmer who modified the firmware. AC, RC, battery, and goggles have firmwares designed to work together.
Thanks for the feedback! I have figure it out! It was because I have set the batteries as non DJI... Once I set them back to DJI the Goggles begun to show the aircraft battery percentage.