In a question I was doing, it said a flat car battery has 7.6V whereas a charged one has 12 V. What is the physics behind this?


closed as unclear what you're asking by Kyle Kanos, Jon Custer, Gert, ZeroTheHero, M. Enns Feb 12 at 17:55

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  • $\begingroup$ That is chemistry. Electrochemistry. Redox potentials, that kind of thing. $\endgroup$ – Pieter Feb 11 at 20:56
  • $\begingroup$ this topic is treated in detail on most battery-technology sites. $\endgroup$ – niels nielsen Feb 11 at 22:49
  • $\begingroup$ I'm voting to close this question as off-topic because it's a chemistry question $\endgroup$ – M. Enns Feb 12 at 17:55