As batteries age, their internal resistance goes up. With higher internal resistance, the upper voltage limit of the cell (typically between 4.1 and 4.2V) is reached at ever lower current, hence the reduced charging power. My 2013 Leaf is now so degraded that even at 50% SoC it can no longer take the “full” 50kW from the CHAdeMO DCFC and I typically charge only from L2. At very low SoC it will still pull full power, but very soon starts cutting back in current, because one of the cells is hitting the high voltage cutoff… (And the cells are still reasonably balanced) Cor.
Sent from Mail for Windows 10 From: Willie via EV Sent: Wednesday, October 2, 2019 5:42 PM To: [email protected] Cc: Willie Subject: Re: [EVDL] EVangel-about: San_Antonio-TX Tesla Supercharger site ...(Watt-me-worry) On 10/2/19 4:49 PM, brucedp5 via EV wrote: > > > Yesterday, I queued to get done lots of chores, as one of > my twice weekly outings my VA hospital Dr. (she sez) 'You > need to get regular exercise'. The frequency of those > outings are to increase as now that September's NDEW > EVents are completed, I've re-contacted my realtor to > re-hook up with him and get back to my whole reason for > moving from Silicon_Valley-CA to become a Texan: > to buy a home so-as to live-out my last 10 good-years in > (a ~$200k 3+bed,2bath home here, would be ~2+M back there). > > After I completed my tasks and before I headed back to my > rented room (I was feeling the exercise burn and old-man > arthritic pain only sleep would reduce), I swung by San > Antonio's (sa) newest public EVSE addition: a new Tesla > SuperEVSE site > https://www.plugshare.com/location/204964https://www.plugshare.com/location/204964 > > This puts sa on the superEVSE map as an in-route charging > destination, which also means we will see a whole lot more > Tesla EVs in this area :-) > > The plugshare listing touts 10 stations, but 2 stations > are still wrapped in plastic, thus are not available/not- > powered on (perhaps this is for future growth?). > > I found it interesting that it is located within a couple > blocks of my realtor's office. Some Tesla forum posts > questioned Tesla's site location choice. But, I feel it is > a worthy selection. There is ample food (restaurants), > drink (starbucks), shopping (plenty to do while the EV is > super-soaking-up high powered L3 juice). > > The site is just off the I-10 Hwy & the neighborhood is > upscale (affluent, yuppie). So, I would feel safe anytime > during its 24hr access (though streets tend to roll-up > their sidewalks after hours in TX). > > Unlike the Walmart e.america site I posted about > http://electric-vehicle-discussion-list.413529.n4.nabble.com/NDEW-updates-9-14-Austin-9-21-San-Antonio-vw-s-E-America-L3-EVSE-Walmart-tp4695078.html > which is Not as easily found just off I-35 Hwy, where you > have to zig &zag (counting the drinking/sleeping homeless > along side) the rough roads/streets. It too also has 24hr > access, but that area is definitely not a safe location > after hours. > > This Tesla superEVSE is easy to spot as most of the stations > are in line with the street, see > https://s3.amazonaws.com/plugshare.production.photos/photos/485546.jpg > & the rest are on a back row with the utility power cabinets > https://s3.amazonaws.com/plugshare.production.photos/photos/485547.jpg > (note: the huge boulders placed in front of the power cabinets. > Rocks, boulders, stone work are all valued on this n.west sa > side of I-10 Hwy. Stone colors, light tan to reddish brown are > worn or used everywhere. Those boulders cost the shopping center > the superEVSE is located in, a large chunk of moola. They also > protect againt inebriated 4x4 monster ice attacks from hi-speed > bashing those cabinets). > > In the 1st image link, I cane walked over to yak at the (red > on the left) Tesla-3 EV driver sitting while charging. He was > kind enough to share with me, that he was from San_Diego-CA and > was eco-touring, driving to FL using I-8 &I-10 Hwys. > > In my trip to relocate to TX, I found parts of I-10 were > quite (teeth-chatteringly) rough on the suspension. So, I > slowed to 60mph in the right lane (on a Hwy with 70 &80+ mph > speed limits). It got better when I got near TX, but you need > to bring/have on you proof you are a citizen.us as there is > a check-point at El_Paso-TX. > > The Tesla-3 driver said he was down to 35mi range (and > getting concerned) when he pulled &plugged in. He said his > infotainment screen was showing he was pulling 144kW into his > EV pack. Since is SOC was low, he would be drawing near > maximum charging current. > > This tells me this was not your (old-school) 120KW superEVSE, > but a newer V2 touting 150kW capability (others please verify, > correct): > https://www.google.com/search?q=supercharger+v2 I could be wrong but.... I don't believe there is any hardware difference between 150kw SuperChargers and 120kw. I believe all 120kw were software upgraded at the same time to do up to 150kw for certain cars under certain conditions. I don't believe that there are any old 90kw SuperChargers out there; I believe all have been hardware upgraded to 120/150kw. I believe only Model 3s can reach near 150kw, not Ss or Xs. Or maybe not all Ss and Xs; I would guess that Raven (new S) will do 150. As they age, the upper limit seems to get cut back; my old S (126k miles) has done no more than 86kw for over a year. A few months ago, I was within a few hundred miles of Las Vegas which hosts, I think, the only not California 250kw SuperCharger. I was sorely tempted to divert just to experience the 250. That is, with my newer Model 3. The 3 uses far less charging time than you might expect. A lot due to better efficiency than Ss and Xs and some due to faster charging batteries. Ss would typically start at about 400 mph (about 110-115kw) and quickly drop off. 3s go to 500+ mph and do not drop off as rapidly. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20191002/1897dc7d/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
