Thanks, Collin.
That affirms one part of the "mystery": poor range in winter.
The other half - missing 3.5 kWh - still persists.
Peri
------ Original Message ------
From: "Collin Kidder" <coll...@kkmfg.com>
To: pe...@kotatko.com; "Electric Vehicle Discussion List"
<ev@lists.evdl.org>
Cc:
Sent: 05-Dec-18 9:13:32 AM
Subject: Re: [EVDL] poor 2011 Leaf performance
>I have two leafs here - 2012 and 2013. The 2012 is lucky to get 40
>miles of range in the winter. In the summer it's closer to 50 miles.
>The 2013 can drive somewhere in the range of about 40-45 miles in
>Winter and 60-70 miles in Summer. I wouldn't consider any of that to
>be great but that's how it is. As far as I've heard, the batteries
>they used in 2011 and 2012 were pretty bad and degrade very badly
over
>time. By 2013 the batteries got better then more recently they got
>better again.
>
>I think there is an issue where the cells do very poorly in Winter
and
>you don't get nearly the range you would calculate you should be able
>to get. Be very careful how far you drive in Winter with these
things.
>I basically drive back and forth to work and charge when I get to
work
>(there's a J1772 6kw charger here). I don't usually have to charge at
>home, even in Winter, even if I drive around a bit between home and
>work. But, I live 9 miles away from work so that's only 18 required
>miles to get back and forth. Still, driving 9 miles from work to home
>in Winter will easily take 20% charge, sometimes more. This agrees
>with my above guess. 9*5 would be 45 miles range at best.
>
>On Wed, Dec 5, 2018 at 11:27 AM Peri Hartman via EV
<ev@lists.evdl.org>
>wrote:
>>
>>Cor,
>>
>>So, just to make sure I understand, you have 8 capacity bars, which
>>you're assuming is
>>100% - 15% - 3 * 6.25% = 66% of 24 kWh, or about 16 kWh, correct?
>>
>>In my case, with between 8 and 9 capacity bars, that would be
>>100% - 15% - 2.5 * 6.25% = 69%,
>>or 24 kwh * 69% = 16.5 kWh.
>>
>>My estimate for the range remaining doesn't change - I used the
table
>>in
>>the link below and did not assume them to be linear. So the rest of
my
>>calculations are unchanged.
>>
>>Still results in 3.5 kWh being "lost" somewhere.
>>
>>If someone local (Seattle) has a gid meter and is willing to lend
it,
>>I
>>might be able to get some more accurate extrapolations. At least I'd
>>know the true capacity and the true amount of energy used, right?
>>
>>Peri
>>
>>------ Original Message ------
>>From: "Cor van de Water via EV" <ev@lists.evdl.org>
>>To: "Electric Vehicle Discussion List" <ev@lists.evdl.org>
>>Cc: "Cor van de Water" <cor.vandewa...@gmail.com>
>>Sent: 04-Dec-18 6:48:24 PM
>>Subject: Re: [EVDL] poor 2011 Leaf performance
>>
>> >Capacity bars are not linear.
>> >The 12 bar display is actually anything from 85% to 100% capacity.
>> >Below that, every bar stands for 6.25% if I am not mistaken
(quoting
>> >from memory)
>> >So 7 bar capacity can be as low as 100 – 15 – 4 x 6.25% = 60% so
less
>> >than 15kWh.
>> >Also, there is a reason it is called the GOM (Guess-O-Meter).
>> >My Leaf has 8 capacity bars. I can drive home and go from 12
quickly
>>to
>> >10 or 9 and then arrive home with only 6 or 7 bars left.
>> >Then drive to work starting with that half charge and arrive at
work
>> >with still 3 bars left….
>> >I have noticed that range bars are not linear, so you can’t say X
>>bars
>> >is so many kWh left.
>> >GIDs are a better measurement, so use LeafSpy and you can much
better
>> >judge what your Leaf is doing.
>> >Hope this helps,
>> >Cor.
>> >
>> >Sent from Mail for Windows 10
>> >
>> >From: Peri Hartman via EV
>> >Sent: Tuesday, December 4, 2018 6:13 PM
>> >To: Electric Vehicle Discussion List
>> >Cc: Peri Hartman
>> >Subject: [EVDL] poor 2011 Leaf performance
>> >
>> >Anyone want to take a stab at this mystery - poor performance of
my
>> >2011
>> >Leaf ?
>> >
>> >Temp about 45F
>> >Heat on: drawing average of about 1 kW
>> >"other systems" drawing about .25 kW
>> >Drove 14 miles, went from 12 range bars to 5 bars (full charge
level
>>is
>> >9 capacity bars)
>> >Average 3.2 miles / kWh
>> >Duration about 1 hr.
>> >Driving pretty carefully - usually only 2 "balls" on the usage
meter.
>> >
>> >For electrical systems, I estimate I used about 1.25 kWh.
>> >For traction, 14 / 3.2 = about 4.5 kWh
>> >Total: 5.75 kWh.
>> >
>> >According to
>>
>https://electrolease.nz/blog/nissan-leaf-range-charts-and-tables.html
>> >5 bars equates to about 45% charge remaining.
>> >
>> >Assuming that the capacity bars are linear and I'm between 8 and
9,
>>the
>> >battery should have somewhere near 17 kWh (24 originally).
>> >
>> >45% of that is about 7.5 kWh remaining charge.
>> >Add in what I've used, 5.75, makes 13.25 kW - but should be around
>>17.
>> >
>> >Plus extrapolating the mileage: 14 / 45% = 31 miles estimated
total
>> >range.
>> >
>> >What happened to the other 4 kWh?
>> >
>> >And, am I the only one who get 31 miles per charge? This Leaf has
had
>> >miserable winter range since the beginning. Still don't know why.
>> >
>> >Peri
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