12V Battery Dropped Overnight

[hoffmane598]

So my Niro EV's 12V battery took a nosedive to 5V overnight. I had the charger plugged in but set to stop. I’m starting to think it might be because I left the radio on after shutting off the car. Anyone else run into this? Also, if I leave the car plugged in with the charger set to off, will that stop the 12V battery from getting any juice? Appreciate any wisdom you’ve got!

 

[Uly Alega87]

I think that isn't normal. It should be charging the 12V battery as necessary while plugged in.

 

[Sebban-Balwer]

I think your battery is good. Try cleaning your air intake and changing the air filter. That might fix the problem.