DaveinOlyWA
Well-known member
asimba2 said:Amen to that! Why would anyone WANT a TMS if the industry can eventually get a battery chemistry that can hold up on its own? Added cost and complexity which are two things I love to avoid with my EV! Jury is still out on the 2015 but hopefully it shows an improvement. And for the record I considered the Kia but not only is it not available in my area the added cost doesn't quite justify the extra couple of miles on the GOM. My 2015 Leaf regularly gets me over 100 miles range + GOM in the summer.
The grass is always greener on the other side. I certainly do not aspire to the massive vampire draws the Tesla has in both hot an cold weather:
"I was on vacation for a few days and the Leaf was outside and unplugged (mean outdoor temp approx 25°F). Over the 8.5 day period, the idle power loss was 0.4 kWh (took 9 minutes to top-off at about 11A average charging current), which equates to only 50 watt hours per day. It's the purple square on the graph. That car can really sleep, even in the cold!
In contrast, the Tesla lost 18.85 kWh over only 4.9 days, which equated to 5,630 watt hours per day. It took slightly over 4 hours to top off at 20A. If the Tesla had been unplugged for the same amount of time as the Leaf, it would have taken slightly over 7 hours to top off, using 32.63 kWh. At my cost (Windsource @ 16¢ / kWh) for an 8.5 day vacation the Leaf would cost 6.4¢ while idle, and the Tesla $5.22."
I can't find the forum thread where I saw data for hot temps, but my recollection is the Tesla TMS could draw nearly half of the Leaf's TOTAL battery capacity in one day of high heat. I'd prefer heat tolerant chemistry over a complicated and wasteful TMS any day.
Can the Soul's A/C be triggered remotely when parked? Might not be a bad idea to turn it on for a bit at 3-4 pm on really hot days to let the battery breathe a bit.
how much power is devoted to Tesla TMS is a greatly discussed topic but the numbers rarely agree. I suspect its somewhere in the middle. yours are higher and "high heat" statements aggravate more than complement any discussion but then again; Tesla needed to make money and fast and developing a better battery chemistry or paying the going rate was not an option. So they did what they could afford and the product was not good but they learned quickly and adjustments came fast.
This really illustrates imm, the real reason Tesla is building their own battery factory. Better chemistry, etc. Instead of spending big bucks to design everything well, they went will lets put together what the people want and see what they break before we decide to go whole hog on a complete ground up design.
The Roadster is iconic in more ways than looks. It was the essential S Model prototype in more ways than we can imagine. Musk may seem like a risk taker but he actually has a pretty well defined process of learning from the previous mistakes even if he refuses to publiclyacknowledge that fact.