kolmstead
Posts: 479
Joined: Mon Aug 09, 2010 9:07 pm
Delivery Date: 15 Jan 2011
Leaf Number: 000257
Location: Ridgecrest, California (100 miles east of Bakersfield)

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Wed Jan 19, 2011 9:38 am

Based on what I've seen so far, and what mwalsh and others like Malcolm have reported, I think that the day I get my (just ordered) TED going will be my last visit to Carwings rating page. Maybe Nissan decided to adjust the ratings for PR purposes, but I have a problem with seeing people report 4 mi/kwh, and Carwings call it 6 mi/kwh. What's the point of that?

As DeaneG suggests, any numbers I report will be AC kwh per mi.

-Karl

DaveinOlyWA
Posts: 15298
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Wed Jan 19, 2011 8:26 pm

this thread is the reason why i am using my Killawatt.

got 80 miles on it so far (some was done by dealer) it was just about fully charged when i picked it up last night.

drove 47.3 miles, plugged in put in 14.68 (per the KAT) did not get a full charge drove it 20.8 miles today and have it plugged in.

so wont know my mpk rating until its charged up. car says 3.7 mpk so far.

KAW= Kill-a-watt meter
mpk= miles per killowatt hour
Last edited by DaveinOlyWA on Thu Jan 20, 2011 6:30 am, edited 1 time in total.
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 15, 235.1mi, 93.12% SOH
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garygid
Gold Member
Posts: 12469
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Wed Jan 19, 2011 10:41 pm

I thought my Kill-a-Watt meter was "limited" to 15 amps,
good for measuring L1 usage.

Will it work at 16 amps, with a spike to 18 amps (for L2 usage)?
See SOC/GID-Meter and CAN-Do Info
2010 Prius
2011 LEAF, 2014 Tesla S85
2018 & 2019 Tesla Model 3
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
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Spies
Posts: 837
Joined: Sat Jul 31, 2010 8:22 am
Delivery Date: 10 Jan 2011
Leaf Number: 0255
Location: Foster City, CA

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Wed Jan 19, 2011 11:02 pm

garygid wrote:Will it work at 16 amps, with a spike to 18 amps (for L2 usage)?
Certainly not the Kill A Watt I have.

For monitoring only the L2 EVSE someone on a budget might consider the TED 1000 instead of the TED 5000. Not sure its worth the savings though. Perhaps someone else might have an opinion on that.
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planet4ever
Posts: 4674
Joined: Sat Apr 03, 2010 9:53 pm
Delivery Date: 02 May 2011
Leaf Number: 1537
Location: Morgan Hill, CA, south of San Jose

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Wed Jan 19, 2011 11:15 pm

kolmstead wrote:Based on what I've seen so far, and what mwalsh and others like Malcolm have reported, I think that the day I get my (just ordered) TED going will be my last visit to Carwings rating page. Maybe Nissan decided to adjust the ratings for PR purposes, but I have a problem with seeing people report 4 mi/kwh, and Carwings call it 6 mi/kwh. What's the point of that?l
I just posted something under "Range Question" that perhaps would have been more appropriate here. What is Carwings measuring, anyway? Could it be only the electricity going to the inverter and motor, so that it doesn't include anything used for heating or cooling?
End of April 2013: Traded my 2011 SL for a 2013 S with charge pkg.

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garygid
Gold Member
Posts: 12469
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Thu Jan 20, 2011 12:32 am

And, maybe CARWINGS is only using energy recovered from the battery, which might be only 80% (or 90% for low speeds and gentle acceleration) of the energy put into the battery when charging?

Then, the "from wall" energy is even greater, primarily due to losses in the charger (5%, perhaps up to 10%).
See SOC/GID-Meter and CAN-Do Info
2010 Prius
2011 LEAF, 2014 Tesla S85
2018 & 2019 Tesla Model 3
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Solar PV: 33 x 225W -> 7 kW max AC
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LEAFer
Posts: 2647
Joined: Mon May 24, 2010 10:10 am
Delivery Date: 19 Jan 2011
Leaf Number: 000215
Location: Sacramento Area

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Thu Jan 20, 2011 12:49 am

My Kill-A-Watt is showing 11.75amps, 120.5Volts steady state (+/- a little). (charging L1 with trickle charger from trunk.) So that's basically a little over 1,400 watt.
2011 Silver SL+QC [Mfg: 11/2010] 36mo/15k LEASE
06Jun2013 Status [28.5 months][34,173 miles][11 bars]
Lost CapacityBar 6/6/13 @34,173 miles while in LEAF Battery Monitor: 83.41%, 71.4F (avg); cool overnight;

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garygid
Gold Member
Posts: 12469
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Thu Jan 20, 2011 1:06 am

Sounds right with the L1 "brick" (EVSE) "offering" 12 amps to the car (a 20% duty cycle PWM square wave Control Pilot signal).

Now, use the L1 on a 20-amp circuit and increase the offering to 16 amps (26.7% duty cycle), and ... we would have a faster trickle, around 15 hours instead of 20 hours!
See SOC/GID-Meter and CAN-Do Info
2010 Prius
2011 LEAF, 2014 Tesla S85
2018 & 2019 Tesla Model 3
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
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evnow
Moderator
Posts: 11480
Joined: Thu Apr 22, 2010 11:41 am
Delivery Date: 25 Feb 2011
Leaf Number: 303
Location: Seattle, WA

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Thu Jan 20, 2011 1:08 am

Carwings should show what the car shows - no reason to show something else. It's a bug that needs to be fixed.
1st Leaf : 2/28/2011 to 5/6/2013
2nd Leaf : 5/4/2013 to 3/21/2017
Volt : 3/25/2017 to 5/25/2018
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Googler
Posts: 101
Joined: Sat Jan 08, 2011 12:46 am

Re: Miles per kwh so far... my calcs vs. the LEAFs calcs

Thu Jan 20, 2011 1:40 am

The number of $0.075/kwh is what makes it cheap. By contrast, PG&E customers get an off-peak rate of $0.05-$0.18/kwh, depending on the amount they use. The downside is the peak time rates for my other electricity would go from $0.38 to $0.55/kwh air conditioner and for my pool pump and solar heater to run when it's sunny.

PG&E rate schedules are so complicated that it's difficult to estimate what electricity will cost. The problem is that you will be upping your usage considerably, which puts you in higher price tiers.

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