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A comment on Electric Planes Usher in the Second Great Age of Aviation. Parent comment

Re:Electric Planes Usher in the Second Great Age of Aviation by andrewla on Tuesday July 28, 2015 @12:04PM (#9962519)
> And while a battery's energy density is pretty bad, they pretty universally have a higher density than petroleum fuels and thus even worse specific energy

Is there a typo in there? Energy density (MJ/L) for batteries is lower than petroleum fuels by the same order of magnitude as the specific energy.

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Re:Electric Planes Usher in the Second Great Age of Aviation by masklinn on Tuesday July 28, 2015 @02:32PM (#9963579)
While batteries have very energy density compared to petroleum fuels, on average it's much better (compared to petroleum fuels) than their specific energy. Their energy density is 15 ~ 40 times lower than petroleum fuels whereas their energy density is 50 ~ >100 times lower.
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