mwalsh wrote:I didn't know this thread existed. I did a Turtle to 100%, measured by Kill-A-Watt, at the end of January:
http://www.mynissanleaf.com/viewtopic.p ... 3&start=84" onclick="window.open(this.href);return false;
22.62kWh taken from the wall, with charging from Turtle taking 15h58m (19 hours indicated on the dash).
Perhaps due to my (colder?) battery having one or all:...for comparison:
Following 97.4 mile range test on 2/16/13, starting Odometer ~15,450 miles, where I got CW/nav screen report of of 15.8 kWh use from “100” to ~the VLBW, dash indicated “15 hours” recharge time to “80%”. test began with 4 temp bars, and went to 5 ~18 miles into the test, where it stayed to the end.
...Finished charge from “80%“ to "100%" 3 h 10 m (total charge time 15 h 35 min) 22.01 kWh total, showing 4 temp bars and at ~ 45 f ambient ...
5/5/14-edit to remove erroneous comment on voltage adjustmentedatoakrun wrote:Update on the recharge time results for my LEAF, now at ~20,000 miles, 26 months from production, and now under “85% capacity” as shown by the LEAF app:
Following 9/7/11 range/capacity test, to just past the VLBW, ~4 hours 25 minutes of recharge to reach “80%”.
Following the 9/8/12 range test ~4 hours and 16 minutes to reach 80% , and another one hour and 11 minutes to stop charging at “100%, 5 hours and 27 minutes total .
Following my 4/2/13 range test, it took ~4 hours and 14 minutes to “80%” (at considerably lower battery temperature).
Following 6/2/13/13 range test ~4 hours and 19 minutes to “80%”
Following 6/30/13 range test, ~4 hours and 18 minutes to “80%”.
Following 7/7/13 range test ~4 hours and 19 minutes to “80%”, and another one hour five minutes to stop charging at “100%”, 5 hours and 24 minutes total.
Following 8/4/13 range test ~4 hours and 16 minutes to “80%”, and another one hour four minutes to stop charging at “100%”, 5 hours and 20 minutes total.
IMO, these recharge times from ~VLBW to “80%” seem consistent with my range tests, which have shown no significantly large losses of available battery capacity over the last ~22 months.
In addition to the very useful m/kWh at constant speed results for 2011 Nissan Leaf – VIN 0356, the total recharge times and kWh accepted are reported at:
Advanced Vehicle Testing – Baseline Testing Results
http://avt.inel.gov/pdf/fsev/fact2011nissanleaf.pdf" onclick="window.open(this.href);return false;
http://www.mynissanleaf.com/viewtopic.php?f=31&t=13265" onclick="window.open(this.href);return false;
I think considering the total charge times from ~turtle to "100%" may also be very useful, as the recharge times correspond so closely to the kWh recharge capacities for 0356.
It looks to me like the taper charge period may be so consistent as to allow useful comparison of capacity by measuring time, which is much easier to do accurately than measuring kWh from the wall, at least as the inconsistent reports of metered results on this thread seem to suggest...
Unless the charge from “turtle” to VLBW is at lower kW (anyone checked that?) it may reasonable to add ~25 minutes to my total charge times to account for the ~1.5 kWh below VLBW capacity that I did not use in any of my range tests, to extrapolate a charge time for a SOC range equivalent to that tested for 0356.
Compare my 5:27 total recharge time from 9/8/12, and the 5:24 total time from 7/7/13 minute recharge, add 25 minutes, then you can compare an extrapolated average time of ~ 5:51.
Adjust my times by less than 1% to reflect my slightly lower voltage (~238 V, as best as I can tell) then you get an adjusted time of ~5 hours and 48 minutes.
Very close to LEAF 0356’s 5:37, 5:45, and 5:52 recharge times from “low turtle” to “100% shown in the tests of 0356, averaging ~5:45 (recharged at similar temperatures).
Now the old Leaf at 34000 miles GID around 247, AHr=57.11, (87.06%) Hlth 74.17 from turtle to 100% Blink reported 22.1 kWh; The new Leaf close to 11000 miles still holds at 277 GID.camasleaf wrote:The older Leaf finished charging from turtle to 100%: 23.2 kWh in 6:14 hours. So after almost 23000 miles in 16 months the capacity dropped about 1.5 kWh or 7% (assumed 90% efficiency).camasleaf wrote:Just finished charging turtle to 100% on my new Leaf now at 430 miles. The Blink reported 24.9 kWh in 6.44 hours. I will try to turtle the older Leaf tomorrow.
Do you have the charge time?camasleaf wrote: ...Now the old Leaf at 34000 miles GID around 247, AHr=57.11, (87.06%) Hlth 74.17 from turtle to 100% Blink reported 22.1 kWh...
Charging time 6:05. Battery temp from around 66F at start to 70 at end.Cell voltage delta was 223 at turtle and around 22 mv at the end. I have a few leafspy screen captures.edatoakrun wrote:Do you have the charge time?camasleaf wrote: ...Now the old Leaf at 34000 miles GID around 247, AHr=57.11, (87.06%) Hlth 74.17 from turtle to 100% Blink reported 22.1 kWh...
Not trying to cast doubt on the reliability of any Blink device, but...drees wrote:
Drained my car to turtle (5 GIDs) on a 80% charge (188 GIDs) driving 51.6 mi at 3.5 mi/kWh (About half surface streets, half freeway at ~70 mph). LBW came on a bit over 40 miles and VLBW came on around 48 miles. Pulled into garage with 12 GIDs and drained the rest using the heater/defroster on max. Turtle came on at 6 GIDs. Lowest cell-pair around 3.1V, average 3.3V, max 3.45V. Finishing battery temp around 90F, started the morning with the battery around 80F.
Charged to 80% immediately after that which took 4:18:35 drawing 16.157 kWh according to my Blink EVSE...
Were all the “80%” to “100%” sessions at ~the same high battery temperatures?drees wrote:
I didn't charge all the way to 100% as I wasn't planning on going anywhere soon this morning, but my last five 80-100% charges in the last 3 months ought to be good enough to take an average. Here they are in descending order from most recent to oldest:
1:08 3.567 kWh
1:00 3.268 kWh
1:04 3.116 kWh
1:10 3.683 kWh
1:00 3.300 kWh
Average time was 64 minutes, average energy 3.39 kWh.
So we can safely assume a full charge would have taken about 5h 22m and drawn 19.5 kWh.
We know that a new LEAF will pull about 24.5-25.0 kWh from the wall. Mine pulls less than 20 kWh.
In conclusion, my current Ah reading of 53.6 is 81% of a new LEAF's ~66 Ah. My energy used to charge is about 78-80% of what a new LEAF pulls from the wall to charge from turtle to 100%. If anything, the car is over-estimating capacity, not under.
The part of your statement I found without support was:drees wrote:
...own measurements of energy used to charge the car have directly correlated with the car's reported capacity loss...
...own measurements of energy used to charge the car have directly correlated with the car's reported capacity loss and so has everyone else's...