Video uses 540 kg for Tesla 90 kWh pack. Modules inside of it weight about 410 kg (+ coolant) : There is no point in multiplying armor plate at the bottom. We don't know energy density of batteries Tesla is developing. If connector can handle 500 A, then twice as large connector can handle 1 kA. My guess is that Tesla will use 400 VDC charging to keep it simple and safe. Sandia National Laboratories: Z Pulsed Power Facility uses short pulses of 26 million amperes. They are planning to upgrade to 70 MA. Because pulses are only 95 ns, inductive leak creates some sparking.
mass would be the proper term - the minus 31 means zeros to the right of the decimal point. How many electrons to equal one Kilogram and that would be how many pounds of electrons? electron mass = 9.10938356 × 10-31 kilograms
Electrons don't move in or out of the battery, they move from the cathode to the anode within the battery.
Weighing energy is possible in a theoretical sense. M=E/C^2 As such one can calculate the changes in mass of a full battery versus empty by knowing the change in energy. The actual math of a battery sized like one in a Tesla is on the order of single micrograms, which is probably unmeasurable.
That formula works at CERN. It shows how atomic bombs change mass into energy. All else, that my little brain can think of, is potential energy: In chemistry, chemical energy is the potential of a chemical substance to undergo a transformation through a chemical reaction to transform other chemical substances. Examples include batteries, food, gasoline, and more. quick intro Chemical energy - Wikipedia Chemical potential - Wikipedia And if you want to learn/practice thinking from basic principals as Elon likes to advocate, you might start here. The Feynman Lectures on Physics PS- I would encourage most any kid to work on the above web-site. Would not be a waste of time. Also for those into self education (which more and more seems the only way to actually learn anything) see: Khan Academy Would be better than most any school in our 21st century - powerful mentoring tool for parents/teachers as well.