4 ms·

Technically the battery gets a teeny bit lighter because of E=mc².

• anyoneamous 3y ago
  Over long journeys, those 3 nanograms really add up.
  • fragmede 3y ago
    https://physics.stackexchange.com/questions/34421/does-the-mass-of-a-battery-change-when-charged-discharged https://physics.stackexchange.com/questions/34421/does-the-m... It's about a microgram.
    • hermitdev 3y ago
      So, in other words, you gained more mass from bugs splating on the windshield than you lost in the battery.
      • acdha 3y ago
        Don’t worry, we’ve been working on that: https://www.science.org/content/article/where-have-all-insects-gone https://www.science.org/content/article/where-have-all-insec...
      • b112 3y ago
        But in the winter, as the cabin warms up, you have fewer air molecules to cart around.