On 01/07/2016 03:12 PM, EVDL Administrator via EV wrote:
What am I missing here? I don't understand why the responses to this post
are talking about how much energy a Tesla takes.
I guess I failed to be clear though it seemed quite obvious to me. Let
me try again:
1) The Bolt display was shown with extraordinary high energy consumption
per mile. You expressed astonishment at the numbers.
2) I commented that such high consumption was not unusual early in a
trip in cold weather with a cold battery. The Bolt display clearly
indicated only the first part of a trip, ~10 miles.
3) I cited some Tesla numbers, in cold weather with a cold battery, that
approached the Bolt numbers.
4) From there, discussion went on to warming batteries on shore power
thus circumventing that high initial energy consumption from the battery.
The article was talking about the GM car with the cringeworthy name, BOLT,
not a Tesla. That's what I was responding to.
They're not at all comparable. The Bolt is (will be?) a much lighter car
than the Tesla.
The Tesla S weighs over 4600 lb. That's more than a Ford F150 4x4 pickup.
You'd expect it to be a class A amphog.
But not the Bolt. The rumor mill suggests that it'll probably be about the
same weight as a Leaf. I'd expect it to be a bit more, just because it's
made by GM, but not so much that it would use 3 times the energy that the
not dramatically optimized Leaf does.
There is not much difference in energy per mile between a Leaf and a
Tesla. Leaf instrumentation is uninformative but battery size and range
indicates that a Leaf does no better than about 200 wh/m. Teslas can do
around 250 wh/m in warm weather at 50-60 mph. Typically, in warm
weather, Teslas can do 80mph on 350 wh/m.
Maybe there were mitigating factors in this case, but my first impression is
- that's just gross.
Yes, the numbers were gross. Perhaps it was cold car with a cold battery.
I expect the Bolt, under good conditions, will do 200-250 wh/m.
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