That's why fast chargers are DC like Chademo. I thought about building one with batteries. Slow charge them while you are asleep or at work and then fast dump them in the car when you need it. Lot of expense for something I only need once in a while. You can buy small ones made from lithium polymer cells.
Sent from my iPhone > On Apr 7, 2015, at 7:42 PM, Ben Goren via EV <ev@lists.evdl.org> wrote: > >> On Apr 7, 2015, at 4:57 PM, Peri Hartman via EV <ev@lists.evdl.org> wrote: >> >> Your needs may differ but, for me, unequivocally the charge time is more >> important. > > I'm not discounting the importance of charge time. It's just my understanding > that the batteries today aren't the limiting factor in charging. Actually > getting the current out of the wall without melting the wires and setting the > house (or the charger or whatever) on fire. > > It makes sense, too. Figure a car is going to need at least in the range of > ~50HP / 50 kW to have not absolutely pathetically anemic performance. If > you've got a 50A circuit, you still need a kilovolt. If you've got a 250V > outlet, you still need a 200A circuit. Either way, you're looking at > something comparable to the main feed at the meter from the utility, just to > keep up with the car's power potential. And, no, you're not typically driving > full-throttle...but you're still drawing an awful lot of current on the > freeway. If you want to charge as fast as you draw...you're going to need > something that significantly outpaces the main line to your house. > > b& > _______________________________________________ > 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)
