Hi @tommyQ
Possibly…
And possibly not…
The auto-discharge setting needs to be applied per battery. This is something I only found out a couple of weeks ago 
I’d also take a deeper look inside the GO4 app (and/or the premium version of AirData) as it will give you the voltages for each cell in the battery pack and may well provide insight to a potentially duff cell.
First things first though, check the auto-discharge setting on each battery 
Depends where you bought it… The likes of Argos and Amazon are pretty good these days and will usually just replace without argument. Other retails may well refer you straight to DJI.