Night lapse photo battery life

I will be capturing the Perseids meteor shower tonight, but I forgot a battery bank. I have the GoPro Hero 12 with enduro battery. How much runtime should I expect from the battery alone? Also, I want to confirm whether the capture is saved if the battery runs out (that's what I read online).
My settings: interval auto, shutter 30s, ISO 1600, white balance 4000K, quality 4K, photo mode, RAW output.