Hi guys, A friend of mine working as an EE asked me this question for which she had no answer to. She asked if lithium batteries counts as a thermal battery. I had no idea what "thermal battery" meant, so I found http://en.wikipedia.org/wiki/Molten_salt_battery" [Broken] on Wikipedia but I still couldn't find the answer to that question. Since she is currently ill at present, I'm posing this question on her behalf here. Thanks. EDIT: Here's what I understand from the Wikipedia article. It appears that thermal batteries all operate at high temperatures since the electrolyte has to be molten. From http://en.wikipedia.org/wiki/Lithium_battery" [Broken] page it appears that the max operating temperature of a consumer grade lithium battery is 60 degrees Celsius which is way below the required operating temperature of a molten salt cell. Is this understanding correct? But could there be other types of Lithium batteries which operate at much higher temperatures using molten salt as electrolyte?