Dramatic Video Shows Lithium-Ion Battery Catch Fire As Dog Chews On It - Forbes

[Warpy]

6. Theere are other rechargeable batteries in various stages of development

The sodium batteries have an edge in that they're already in limited production.

I've also read about magnesium water (less energy dense than lithium ion) and iron-air systems that sound too good to be true. We know that lithium ion batteries are showing their unintended consequences like EEK FIRE!

We might always use the small ones, they seem ideal for cell phones and small tablets. We do need better solutions for things that require more power, like gaming computers and the electrical grid.