So, 10 billion rings * 1/billionth of an Amp per ring, 176 years and it only used ~10 Amps?<br>For reference, your usual smartphone battery has roughly 5 Amps inside of it. Albeit, in the aforementioned battery we are talking about 2 kilovolts instead of 12v so ~300x the wattage?<br>Feels like something is off in this calculation...,(reply>), What are you talking about? You can't talk about the power stored in a battery with just a current rating, it has to be combined with a voltage and a time. For example, one of the batteries I have in front of me can provide 1.1 amps for an hour at 3.77 volts.