Question about SanDisk iXpand Flash Drive 64GB

I just "briefly" copied 8700 objects (photo and film) from the iPhone to the stick in one go. It worked flawlessly. The amount of data was around 80GB. The stick gets warm and with the iOPhone 8Plus the battery went from 93% to 43%, the process took just under 1h.

Anything is possible, but if you transfer large amounts at once, you risk losing the whole process or partially damaging the already transferred data. When I transfer several large video files, I always do them one at a time. Small photos, however, I do hundreds at a time.