Godox AD-1200 1200W Portable Flash Head with car battery

I think those lights run at a low amperage but high voltage (300-400V range)

If you are looking the power the entire flash unit using a car battery (e.g., power an AD600 with a car battery, then that can be done, the only challenge is determining if flash unit will boot without a sense line to the temperature sensor in the battery pack.

Since the compatible AC power units seem to give out 12+V then it seems like the unit can take 12V directly. e.g., https://www.bhphotovideo.com/c/product/1342118-REG/godox_ad_ac_ac_adapter_f_ad600.html

One thing I am unsure of is the max input voltage supported by the AD600.

One way to tell, is to measure he voltage of a battery pack that was charged to 100% and had its voltage measured within 5 minutes of being finished charging.

The reason for this is that while a car battery will give a reliable 12V for a decent amount of time, if you do something like turn the car on, then the alternator will deliver around 14-14.3V.

Another way to figure out the max input voltage though is really hard since no one seems to have a teardown or even the FCCID of the AD600, is to look at the buck regulators inside of the AD600 and then find their datasheets to determine their rated input voltage range.

Aside from that, the bulbs cannot be directly powered at 12V it would likely just burn it out almost immediately without much light being produced since they are low amperage and high voltage.

PS, camera strobes cannot be run continuously, e.g., a 600 watt second light that takes 600 watts for 1/300s, can't do something like be run at 600 watts for a few seconds nonstop as they will simply overheat  and fail. It is not worth the risk especially since companies tend to price gouge on the lights.