Volt drop when compressor kicks in

[mitsumi]

Hi, im sharing my video here of my OBD.
Can someone tell me if the range of the voltage drop is normal once the compressor kicks in?

[jbarr]

There is a corresponding drop in rpm from the load thus reducing alternator output. Still a useable range for auto function and won't happen when driving or not idling

[Princess_Bishi]

It’s probably normal but I don’t know much about this subject in particular. Back when my A/C worked well, it would run differently for a second like this. I got into an accident that wasn’t my fault and insurance fixed the car. 6 months later I lost A/C. But it ran like this when it was OEM.