Heck, to draw 10uV at 1000A would be an interesting application. In any event you are right. 1000Ah rating only makes sense as a power value if you know the battery so you know then that 1000Ah is really 12,000Wh for a 12v nominal battery. What people mostly like to know about EV batteries is how much current you can draw, the terminology sometimes is a bit loose so context is important. Sometimes when talking about the Ah value we are really asking if you can draw 1000A continuous; then it's suitable as a EV battery, if you can draw only 10A it's not. So that same 12KWh battery is a good EV battery if it's capable of sustaining 1000Ah and a poor one if it's only capable of 10Ah.
Lawrence On Jul 8, 2014, at 11:17 PM, Larry Gales via EV <ev@lists.evdl.org> wrote: > I know that watts = amps * volts, and watt-hours (wh) is a measure of > energy, but over and over again I hear people talking about EV batteries in > terms of amp-hours. What does that mean if you don't know the voltage? > 1000 amp-hr is not impressive if the voltage is, say, 0.00001 volts. Is > there some sort of standard voltage, e.g., 3.6 volts, that is assumed when > one talks about LiON batteries? Does amp-hours tell you something more > than watt-hours? > > Thanks in advance,-- > Larry Gales > > -- > Larry Gales > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140708/122acf6c/attachment.htm> > _______________________________________________ > 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)
