As expected, my driving slows down a lot in Winter. Simply more into comfort food and Netflix I guess so only drove 935 miles. Since my needs were low, public charging becomes more of an inconvenience for the most part. I actually only charged due to need once, the rest simply because its free!
Because I only got 85.66 free kwh, my cost per mile "ballooned" to 1.38 cents (LT average is .63 cents BTW) Had I not used any freebie juice, I would have still remained tier one with cost of 2.13 cents per mile which is actually lowest rate yet in my 2018 (average 2.2-2.3 cents per mile) probably from the lack of 70 mph highway jogs...
If you have not already heard, I had some HUGE hits to battery health all surrounding the two full charge events I had last month. I lost 1.17% in health. I went from an estimated 85% health @ 100,000 miles to less than 70% health (if using extrapolation from Day One)
Note; Keep in mind that battery stats are logged the day recorded but mileage is actually from the day before. This simplifies the process for me as I can simply "write down everything I see"... Yeah, being lazy. This is also the reason why you see a lot of entries where a lot of miles are driven the day after a full charge or an active public charging day.
But since that fateful first week of October, I have only lost .04%...or practically nothing. My Hx has also ballooned to 116.46% as well. Still kinda wondering what its measuring??
As mentioned above, I am relying a lot more on home charging but have been keeping my SOC between 20-50% for the most part. I plug in for 90 mins every morning before taking off for work saving QCs for my days off primarily. This when my Hx started its rise.
So what does this all mean? Well, its well established that 90% SOC is better than 100% and 70% is better than 80% for reducing the rate of degradation and this goes for ALL Lithium batteries. So does the above mean that the 2018 is super susceptible to degradation at high SOC even in cool temps (both days, temps were in mid 50's to low 60's)
Probably not. As we all know, Nissan has had missteps with their BMS and LBC. I think what I saw was a pack recalibration by the BMS due to the very long period of time between full charges. Remember the September and August drive reports? You know, the ones where I was bragging about how well my pack stood up? Well, I am thinking I saw 2 months of adjustment in 2 days is what happened. Again, this means an SOH somewhere around 70% or less @ 100,000 miles. Its more than enough range but to have it be that close to warranty exchange and not getting it would be very disappointing.
As always, the real takeaway here is its simply way too early to make any definitive statements as I have yet to notice any actual loss of range but as you can see, I have not been challenging the range lately either. I did do 117 miles the other day quite comfortably...
WA State realized the impact of being oil dependent decades ago so instituted a series of perks designed to reduce our fossil fuel addictions. Most of us are only aware of the sales tax waiver for fully electric vehicles but that has not always been true. WA's awareness started with hybrids and the emergence of the Prius. I purchased a 2010 Prius on May 19, 2009 that was also sales tax free. FYI; No, Priuses were not going that cheaply especially the IVs. I received a special discount from Toyota (along with special early delivery. The salesmen were much more interested in the car than I was! Remember the 2010 was the first major face lift after the Iconic version.)