New lithium battery achieves over 700 Wh/kg density and operates at −50 °C

[Redaktion]

By replacing traditional oxygen and nitrogen solvents with a novel fluorine-based design, researchers have developed an electrolyte that drastically improves battery performance in freezing conditions.

https://www.notebookcheck.net/New-lithium-battery-achieves-over-700-Wh-kg-density-and-operates-at-50-C.1242258.0.html

[KenMac]

Note that -50C is actually equal to -58F, definitely not 122F.

[limits]

Lithium-ion batteries have an average energy density of 200-300 Wh/kg.
This is 700 Wh/kg.
Double the energy density one more time and you are 1/3 on the way to the energy density of TNT (4600 Wh/kg).
Yes, your battery would become a bomb-like something.
This is why high energy density Lithium-ion batteries are usually used in the military only.