Popping sound from battery

[Jeff32]

Supercharged for the first time this weekend. Actually supercharged 3 times. Each time, I occasionally heard a loud pop from under the floor, presumably the battery. One was right rear, one was under frunk. The car charged and drove, otherwise, normally.

Is this sound normal for a 2019 dual motor? Thanks.

 

[MP3Mike]

Yes it is normal, thought depending on when yours was built there may be a change that makes it not as annoying:
Here is the TSB for that fix: https://static.nhtsa.gov/odi/tsbs/2019/MC-10163736-9999.pdf

 

[RayCanuck]

here ya go

 

[Jeff32]

OMG!! RayCanuck that is exactly the sound, and MP3Mike, the fix you reference is golden!
My ranger is coming over to install a winter wheel package and I'll ask him if he can replace the HV battery breathers.

Thank you guys. Really appreciate your posts!