apacheguy
Well-known member
I did some testing tonight on my 2 week old 2015 SV and I'm not at all happy with the results. In short, I was sold a brand new 2015 that had already seen 1.4 kWh in degradation. I would be happy if the car were a year old and had 10,000 miles on it, but it doesn't. It has less than 500! IMO, this is unacceptable for a new car.
---The Data---
I connected the car at dead, 0, nada and decided to charge her up to 100% and measure the wall power.
Method: Chargepoint L2 @ 208 V 3 phase power
Avg ambient temp during charge: 65 F
Energy: 24.08 kwh
Time elapsed: 5:10:52
Weird. Can't get the image to show up. Basically, it's a graph of my charge session showing all the stats. [mod edit, fixed URL]
Car read 72 F once charge had completed showing 6 battery temp bars.
---The analysis---
I referenced Tony's post over here (http://www.mynissanleaf.com/viewtopic.php?t=16197)
L2 charge from dead should deliver 25.4 kWh. In my case it only delivered 24 kWh.
Quick side note: Does anyone know if the 86.6% charger efficiency accounts for auxilary overhead during charging (rumored to be 300 watts)? Sure hope so, otherwise I'm looking at another 1.5 kWh of degradation bringing the total to 2.9 kWh.
---The Data---
I connected the car at dead, 0, nada and decided to charge her up to 100% and measure the wall power.
Method: Chargepoint L2 @ 208 V 3 phase power
Avg ambient temp during charge: 65 F
Energy: 24.08 kwh
Time elapsed: 5:10:52
Weird. Can't get the image to show up. Basically, it's a graph of my charge session showing all the stats. [mod edit, fixed URL]
Car read 72 F once charge had completed showing 6 battery temp bars.
---The analysis---
I referenced Tony's post over here (http://www.mynissanleaf.com/viewtopic.php?t=16197)
TonyWilliams said:Energy from the wall from dead to 100%: 25.414 kWh
Energy from the onboard charger to battery: 22.031 kWh (86.6% charger efficiency)
Energy from the battery during discharge: 21.381 kWh (our 21kWh useable at 70F)
http://www1.eere.energy.gov/vehiclesandfuels/pdfs/merit_review_2012/veh_sys_sim/vss030_lohsebusch_2012_o.pdf" onclick="window.open(this.href);return false;
http://www1.eere.energy.gov/vehiclesandfuels/pdfs/merit_review_2012/adv_power_electronics/ape006_burress_2012_p.pdf" onclick="window.open(this.href);return false;
L2 charge from dead should deliver 25.4 kWh. In my case it only delivered 24 kWh.
Quick side note: Does anyone know if the 86.6% charger efficiency accounts for auxilary overhead during charging (rumored to be 300 watts)? Sure hope so, otherwise I'm looking at another 1.5 kWh of degradation bringing the total to 2.9 kWh.