How to shoot a week's time-lapse photography?

Time-lapse shooting. What do you mean you're going to shoot for a week? Seven days? In my understanding, the digital SLR external power supply can't last for 7 days! And I don't know what you're going to do, but I'm telling you, if the night drags on until the day, all the tracks taken at night will be covered! If you are shooting forbidden objects in a crowded place and want to blur pedestrians, just delay the shutter for about 3 minutes! In addition, I tell you, you don't have to take one shot at a time, you can take multiple delayed shots without moving the camera and then synthesize one later! It is impossible to delay the outdoor light continuously because the difference between day and night is too big! If it is indoors, only mechanical cameras can do it within a week! Run as long as you want without batteries! But now use mechanical film to develop poetry!