Hello,
I have a nexus 6p. Currently running Android 7.1.2 beta. I havent flown the Mavic with this beta verison before so not sure if that is indeed the issue.
Justed tested the mavic and all of my three batteries that are at about 55% show battery status error in the DJI go 4 app. Battery status page shows no problems with any cells or any thing...Anyone else notice this?

I am going to test by fully charging the battery to see if that get gets rid of this problem...

After fully charging the battery, please let me know if the error persists.