garygid
Well-known member
I thought you accidently typed 3 kWh / mi
Sorry, either you fixed it, or I misread it.
Sorry, either you fixed it, or I misread it.
Yeah, I was backwards - I edited it after gary pointed out my type-o.planet4ever said:Is there something wrong with the way drees stated it?
tbleakne said:Very interesting data. A few comments on correlation, or lack thereof. I am having trouble getting your data into my speadsheet, so pardon my formatting.Jimmydreams said:If anyone is interested, I'm posting a spreadsheet of my daily drive, how many miles, average mi/kW, how many kWh go into the EVSE each night, etc.
Enjoy.
https://spreadsheets.google.com/pub...SzdvazBlNHRlZDNDY2VRUlFfNkE&hl=en&output=html
"bars remaining" at destination =2:
EVSE kwh 18.9, 22.1, 25.5
bars=4:
EVSE kwh 18.9
Any thoughts about why these don't correlate very well ? It would seem you really don't have a very accurate reading of how much battery charge you have left. A little scary.
Have you tried charging to 80% ?
How convenient or inconvenient is it to charge to say 90% ? Would you have to control it via charging time? I would like to have that flexibility to maximize battery life on shorter trips.
In my opinion it's better to use number of bars. That way it is obvious it is an approximation. If you use % it looks like it is more precise but, as we have discovered, it really isn't. They are just taking the bar count and converting it to a percentage.Jimmydreams said:I am starting to use the % charge remaining listed on Carwings.
Jimmydreams said:If anyone is interested, I'm posting a spreadsheet of my daily drive, how many miles, average mi/kW, how many kWh go into the EVSE each night, etc.
Enjoy.
https://spreadsheets.google.com/pub...SzdvazBlNHRlZDNDY2VRUlFfNkE&hl=en&output=html
evnow said:Jimmydreams said:If anyone is interested, I'm posting a spreadsheet of my daily drive, how many miles, average mi/kW, how many kWh go into the EVSE each night, etc.
Enjoy.
https://spreadsheets.google.com/pub...SzdvazBlNHRlZDNDY2VRUlFfNkE&hl=en&output=html
How does the kwh delivered (using TED) compare to what carwings reports as the the kwh consumed ?
True - but we know the difference will be in the region of about 10%. So if carwings says 6miles/kwh and TED shows 3 mpkwh, we know carwings is wrong. But if it shows 3.2mpkwh we would know they agree.Jimmydreams said:No, it doesn't.
Carwings shows energy consumed which (I believe) takes the kWh burned from the battery and then subtracts any kW earned through regen. TED only shows kWh going to the EVSE, which includes any charging losses. TED will always show a higher number due to charging inefficiencies.
Jimmydreams said:Carwings shows energy consumed which (I believe) takes the kWh burned from the battery and then subtracts any kW earned through regen. TED only shows kWh going to the EVSE, which includes any charging losses. TED will always show a higher number due to charging inefficiencies.
These two comments taken together raise the possibility of another important factor. Is Carwings counting all energy taken from the battery while you are driving, or only the energy going to the inverter/motor? Is energy used for heating and cooling the cabin being counted? How about energy for cooling the inverter and motor?KeiJidosha said:TED will also show energy used by the EVSE relay, for Battery balancing, Cabin Pre heat/cool, and (unless you have an SL sitting outside in the sun) power consumed by the carwings "phone/computer".
garygid said:CARWINGS, to display a better number, MIGHT only count the energy going to the inverter to drive the motor, minus the total Regen energy even though not all of the Regen energy can be used later, AND not count the Climate or Other usage at all.
garygid said:It seems that CARWINGS reports Climate and Traction kWh.
Does it show the Other kWh, or total kWh also?
Rat said:It sounds like you're starting in Santa Cruz, going up Hwy 1, then at the end climbing 92 to end at your workplace. Go home the opposite direction. Several days at work = fire dept. is my guess. Sounds like the husband of an ex-FBI agent I know, only I think he starts in Aptos. Anyway, I would be very leery about this if I have the scenario right. Hwy 92 is steep coming out of Half Moon Bay and you would be right at the limit of your charge. You don't want to be creeping with commute cars behind you. Is there a Nissan dealer selling the Leaf in either Half Moon Bay or Santa Cruz? You should definitely identify charging stations along the way before the first attempt and call ahead to make sure one is available if necessary.
Rubbish! Coasting could only be 100% efficient in a vacuum when there are no law enforcement officials or other cars around.rmay635703 said:Coasting is 100% efficient,
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