4 ms·

That graph shows Li-ion as the highest energy density, which is in accord with the article. What am I missing?

• deleted 14y ago
  [deleted]
• icambron 14y ago
  The trend. The point is that energy densities are improving steadily, contrary to the article.
  • regomodo 14y ago
    Which is a bit moot because, going by the trend, it's not until ~ the year 2220 that batteries will equal petrol for energy density by weight.