DaveinOlyWA
Well-known member
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.
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.