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[Phys-L] Endo/exo thermic battery



Unless I am completely misunderstanding the chemistry (a possibility), battery charging should be endothermic and discharging exothermic because of the associated entropy changes (hence the recent phones catching fire problem). Does the cooling while charging really happen in (all?) real batteries or is there something in the engineering that changes this picture? Can anyone point to any data or discussion? Seems like my phone and laptop get hot when discharging AND charging.

kyle
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“Talent is universal, opportunity is not”
- Rye Barcott

Kyle
kforinas@ius.edu
http://pages.iu.edu/~kforinas/