It will be easier to see if your laptop’s battery is full and charging, or about to die and needs to be plugged in.
If you go to Settings -> Battery on your iPhone, you can see a lot of stats ... It will be marked red when battery percentage falls below 20%. It will be marked yellow if Low Power Mode is enabled.
Apple says that Low Power Mode reduces the amount of power that your iPhone is using to make your battery last longer. You can tell when you are in Low Power Mode because your battery icon will be ...