danrjones said:DaveinOlyWA said:danrjones said:Sorry, I forgot to mention, I've done multiple short DC sessions at the station near me. But I always stop before hitting 70% SOC. Did not seem to impact my HX. Sample size of one (just me) and its during winter (and short session) so my pack doesn't get hot, so hard to draw conclusions.
I haven't charged to above 70% either. In most cases, I was only charging to 45-55% (the knee on 200 amp stations)
I guess my real question is what is the desirable Hx? Because I see ones with high Hx still getting relatively large chunks on adjustment day while others with Hx in high 90's or low 100's getting no adjustment, very small adjustments or positive adjustments.
Now there is always exceptions so all my comments should be taken as "majority" observations.
I have no idea what HX is desirable (good question) or if it is good to be low or high, or makes no difference. I was just doing an experiment because I could.
My HX is lower than yours and yet my SOH is not better, and for my mileage (about 8700 miles total), one could say my SOH is worse.
Right now my best guess is that SOH is primarily related to age, secondarily related to climate and cycles. But the BMS could also be hiding the real answer.
DaveinOlyWA said:With the new packs, there is little difference for the first 7-10% degradation other than time. So mileage, charging habits, climate, etc. None seem to matter. My clock started Nov 2019. There is some evidence that exercise seems to help but not a lot, maybe 2-3%. So drive more, pack "seems" healthier but I am not all that convinced the BMS is giving us the straight story.
danrjones said:DaveinOlyWA said:With the new packs, there is little difference for the first 7-10% degradation other than time. So mileage, charging habits, climate, etc. None seem to matter. My clock started Nov 2019. There is some evidence that exercise seems to help but not a lot, maybe 2-3%. So drive more, pack "seems" healthier but I am not all that convinced the BMS is giving us the straight story.
That all sounds about right from what I've seen. I bought my 2018 in 2019 but it had been sitting around on the dealer lot for a year I think.
I'm curious to see what happens in the 3-5 year period on these but honestly I don't think I'll keep it that long. I'm eyeing the Audi Q4 Etron depending on the entry price.
So I just got my first readjustment on my 20 Plus since buying in November. Today is the anniversary from when the car was built. SOH is at 97.08% compared to 91.75% with my 19 non-Plus at the anniversary mark. On my non-Plus, I had over 200 more QCs, and 20,000 more miles difference so that may be the reason for the difference in SOH at the 1 year mark.DaveinOlyWA said:danrjones said:DaveinOlyWA said:I haven't charged to above 70% either. In most cases, I was only charging to 45-55% (the knee on 200 amp stations)
I guess my real question is what is the desirable Hx? Because I see ones with high Hx still getting relatively large chunks on adjustment day while others with Hx in high 90's or low 100's getting no adjustment, very small adjustments or positive adjustments.
Now there is always exceptions so all my comments should be taken as "majority" observations.
I have no idea what HX is desirable (good question) or if it is good to be low or high, or makes no difference. I was just doing an experiment because I could.
My HX is lower than yours and yet my SOH is not better, and for my mileage (about 8700 miles total), one could say my SOH is worse.
Right now my best guess is that SOH is primarily related to age, secondarily related to climate and cycles. But the BMS could also be hiding the real answer.
With the new packs, there is little difference for the first 7-10% degradation other than time. So mileage, charging habits, climate, etc. None seem to matter. My clock started Nov 2019. There is some evidence that exercise seems to help but not a lot, maybe 2-3%. So drive more, pack "seems" healthier but I am not all that convinced the BMS is giving us the straight story.
I suggest you first wonder how much they will cost and how long they will last.Triggerhappy007 said:As far as solid state batteries, I wonder how expensive the chargers will be and how much charging will cost?
DaveinOlyWA said:Surprised you aren't waiting for Toyota's solid state? Will be here in...2 years...maybe 3.
I take it you drove the LEAF. Were you forced to park it in front of the neighbor's house ?danrjones said:My wife seems to think the badge on the front and back matter, in so much as a status symbol. I could care less but she wants a luxury vehicle. Seems to be part of her genetics.
Triggerhappy007 said:As far as solid state batteries, I wonder how expensive the chargers will be and how much charging will cost?
SageBrush said:I take it you drove the LEAF. Were you forced to park it in front of the neighbor's house ?danrjones said:My wife seems to think the badge on the front and back matter, in so much as a status symbol. I could care less but she wants a luxury vehicle. Seems to be part of her genetics.
DougWantsALeaf said:I also really like the design of the Recharge. If it had 300 epa miles, it could at least feel like a do-able value. At 208 and the auto shows showing what looks more like 150s, also agree , no thanks.
How often do various folks here charge to 100%? I've always wondered if an occasional full charge is good for the BMS to help figure out how much SOH you actually have.
DougWantsALeaf said:I am now trying to ensure to do 1 100% charge per quarter to see if it lessens the quarterly adjustments or not. Next adjustments in Feb and March on the cars.
DaveinOlyWA said:DougWantsALeaf said:I am now trying to ensure to do 1 100% charge per quarter to see if it lessens the quarterly adjustments or not. Next adjustments in Feb and March on the cars.
Any change would be inconclusive. Its not like the adjustments are predictable with any kind of accuracy. A much easier task is tracking Hx I would think. At least you have daily feedback of it going up or down.
Lately, I have been wondering if Hx responds to time at very low or very high SOC? I am doing a quarter where the aim will be no lower than 30% SOC (target actually 45%), no higher than 75% (typical would be 60%) this is higher than the previous quarter when I was running primarily from 20 to 45%
SageBrush said:I've read that the '40 kWh' LEAF starts with 38 kWh usable. I'm not sure if it is correct but starting from that point:
Your SoC dropped 76.6% and per LSpy you consumed 26.31 kWh
That implies total usable of 26.31/0.766 = 34.34 kWh
If new is 38 kWh then degradation is 1 - 34.34/38 = 9.5%
That matches up well with the reported SOH drop
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I would not make much of one trip, but 3 miles per kWh without heat use is low. An Audi in your hands is going to post some *really* low numbers unless you were driving on flat tyres. Or perhaps you left the handbrake on ?
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Albuquerque was 50F and sunny today but the Model 3 battery was mid 30sF when I left home for a 30 mile drive today. First to the state park for a walk and then downtown to buy our favorite salsa. I drive gently for the most part, stay below 70 mph on the highway, and don't pay attention to fuel economy until I get home. The trip worked out to 5.5 miles/kWh. Pretty typical.
I also calculated my '100% SoC range' before I walked into the house. 318 miles -- no decrease in almost 3 years. BORING
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