A battery is chemical not electrical Sent from my iPhone
> On Jun 24, 2015, at 9:31 AM, Lee Hart via EV <ev@lists.evdl.org> wrote: > > Roger Stockton via EV wrote: >> I think that it is possible that people are confusing *theoretical* cell >> chemistry with that of *practical* cells. > > I think that is exactly the case. > > In theory, theory and practice are the same. > In practice, they are not. -- Albert Einstein > > Of course there is an electric field inside a battery. Without an electric > field, there would be no voltage, and you wouldn't have a battery. By > definition, an electric field exists whenever there is a voltage difference > between two points. The electric field provides the force that moves > electrons and ions (polarized molecules) between plus and minus sides of the > cell. These charges *will* find a way to leak. > > An analogy: The designers may *think* their wonderful new concrete dam > doesn't leak a drop. But the tourist notices that the walls of the canyon > below it are wet, and the farmer notices the change in ground water at his > wells. The pressure is there, and the water *will* find ways around the dam, > whether you like it or not. > > The important *practical* consideration is whether this leakage matters, or > not. In a pacemaker, an ultra-low self-discharge rate is important (so they > don't have to cut you open every few years to replace the battery)! In an EV > that you can plug in any time you like, it's not very important. > > So, can we go back to discussing the practical aspects of EVs now? > -- > The greatest pleasure in life is to create something that wasn't > there before. -- Roy Spence > -- > Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA > (http://groups.yahoo.com/group/NEDRA) > _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
