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How well do your batteries respond to a hard vacuum?
How does their performance hold up -100C?
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How well do your batteries respond to a hard vacuum?
How does their performance hold up -100C?
How a battery responds to hard vacuum would depend on it’s mechanical strength. As for -100 degrees Celsius aside from mechanical issues it would depend on the freezing point of the battery acid.
A quick google search tells me:
http://www.google.ca/search?hs=Dt6&hl=e … arch&meta=
That for acid batters we expect around -40 to -50 degrees Celsius as the freezing point. Thus an acid batter will have to be insulated enough so that it’s leakage current can keep it warm enough to be above these temperature ranges. Hydrogen batteries I think can go down to -230 c but I would think that the products of the reaction would freeze at much higher temperatures.
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The prospect of plug-in hybrid car development should stimulate rapid development of high capacity batteries capable of routine operation in sub-freezing temperatures, leaving only sealing under pressure to make them spaceworthy.
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Hmm, that will teach me to reply to spammers.. ah well.
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