DaveinOlyWA said:
Dave, do you know when you gained the fifth battery temperature bar? Over the course of that 100 miles, it seems that the average battery temperature was likely higher than 40°F. Knowing the point at which you gained the fifth temperature bar might give us a clue.DaveinOlyWA said:
TonyWilliams said:DaveinOlyWA said:
100.1 miles / 5.1 miles per kWh = 18.88kWh burned. This is almost identical to my trip from Long Beach to San Diego where I drove exactly 100 miles at 5.1, driving in the garage in Turtle. My ambient temp was a bit higher, in the 50F's.
Ambient air 38F - 43F
LB - 11.9 miles until
VLB - 6.6 miles until
Ration LBW to VLB - 55%
Truly great data ! Please shoot me an email at TonyWilliams at LoveMyLEAF daught com with your shipping address, shirt size (S, M, L, XL) and color (Blue or Yellow).
So, let's see how this data fits.
Model 1 of "1% loss per 4F below 21kWh capacity at 70F":
Assumed battery temp of 40F is a 30F delta from 70F, therefore 30 / 4 = 7.5% reduction in battery.
7.5% of 21kWh = 19.42kWh
Model 2, "1% loss per 4F below 20kWh at 70F"
70-40 = 30 / 4 = 7.5% * 20kWh = 18.5kWh
Model 3, "1% loss per 4F below 20.5kWh at 75F"
75-40 = 35 delta / 4 = 8.75% * 20.5kWh = 17.95kWh
Nearly 20 miles from LB. That is great.DaveinOlyWA said:LB @17.4 & 49 80.8
VLB @ 8.5 & 24 and 92.7
lost first power circle @ 98.8 miles
turtle @ 2.8 and 8 and 99.3
evnow said:Nearly 20 miles from LB. That is great.DaveinOlyWA said:LB @17.4 & 49 80.8
VLB @ 8.5 & 24 and 92.7
lost first power circle @ 98.8 miles
turtle @ 2.8 and 8 and 99.3
DaveinOlyWA said:5.3 miles per K
TonyWilliams said:100.1 miles / 5.1 miles per kWh = 18.88kWh burned. This is almost identical to my trip from Long Beach to San Diego where I drove exactly 100 miles at 5.1, driving in the garage in Turtle. My ambient temp was a bit higher, in the 50F's.
...
So, let's see how this data fits.
Model 1 of "1% loss per 4F below 21kWh capacity at 70F":
Assumed battery temp of 40F is a 30F delta from 70F, therefore 30 / 4 = 7.5% reduction in battery.
7.5% of 21kWh = 19.42kWh
I just did 65 mi (4.6 mi/kwh) at 32 F last weekend. I started with 11 bars and used about 10 - 11 bars (I don't remember exactly, but I don't think there were any bars left), getting the LBW at around 13 mi (GOM). I finished with about 7 mi (GOM) remaining. No VLBW or Turtle so I knew I would make it. Drove 50-60 mph going and 30-40 mph returning. That's about my anxiety limit. I might try for longer distances when the weather warms up (even 45 F is easier). No heat is tough on the feet. Why can't Nissan let us put the air flow on window only? :evil:TonyWilliams said:DaveinOlyWA said:5.3 miles per K
I got the math right, and confused your 5.3 for my 5.1. By the way, that trip I made was right at 5.3 and 45mph the whole until I needed the darn heater at the end. 100 miles, though, but with some pretty agressive hyper idling the last several miles to offset the heater.
DaveinOlyWA said:(another t-shirt is not required)
DaveinOlyWA said:heat on all the way. temps about 42º... trip home 39º....
64.1 miles and 3.7 miles/k....
i took it out and ran a circuit at 35-40 mph until i parked it at 79.3 miles and 4.1 miles/k. SOC 3% GID 8.
TonyWilliams said:DaveinOlyWA said:heat on all the way. temps about 42º... trip home 39º....
64.1 miles and 3.7 miles/k....
i took it out and ran a circuit at 35-40 mph until i parked it at 79.3 miles and 4.1 miles/k. SOC 3% GID 8.
Well.... if we go back and compare the various assumed battery temperatures, this one doesn't fit.
You had another mile or three left, so 82 miles / 4.1 is 20kWh consumed.
We absolutely need a way to measure the battery temperature, because there is far too much variation. Or some other factor is in play that isn't obvious.
TonyWilliams said:I hope she's more comfortable with range with the Gidmeter and your demonstrated extra 15 miles.
TonyWilliams said:We have a 65 mile RT, all freeway run today, with a full load. Can't wait to see the S.O. pucker factor on the way home.
TonyWilliams said:...
We absolutely need a way to measure the battery temperature, because there is far too much variation. Or some other factor is in play that isn't obvious.
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