Does a charged battery weigh more than a discharged one?

Ok the reason I pose this, Energy and Mass are related to each other (Bhai Einstein ne bola tha)… and when the battery discharges, its technically lost energy and hence should have lost mass. But have a feeling the mass lost is really negligible and hence we dont record that loss. Lemme figure it out.

I got hands to an interesting forum with some comments on a similar question posed.

Something interesting is, that if you drop a battery (with a full charge) from about 6 to 10 inches onto a concrete floor, it will bounce much less (almost seem to stick to the floor) than an empty one, which bounces quite high comparitivly. Not saying this has to do with the weight of the battery, but maybe someone could offer an explanation?
Energy is stored in a battery in chemical form. In other words, the energy is stored in the chemical bonds between atoms, which involve electrons. A charged battery has many such bonds already formed, while a discharged battery contains the same atoms, but with the bonds almost all broken.
I guess that’s the most apt answer… Breaking bonds, energy released.

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So what’s this blog about?

Another attempt? Well yes. Attempting to figure out another sustainable model (there are some other attempts going on parallel-ly). Well, we have a lot of questions in mind. we read up stuff, we do some research to find answers to these questions. This is an attempt to publish that little 15-20 minute research.
June 2009
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