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Thanks bytemaster0 sorry bothering you with many questions but I learn a lot, nope no precond. enabled for me, I always go at random times, I guess I will consider using more D+ too if no traffic queue it feels most comfortable compared to other modes. I will drop info I gathered tomorrow.
@eqe300CZ The results after a long distance drive with 130km/h the SOC at 17% vs the original estimate of 13% is pretty good. The 13% would have been based on previous driving statistics, current battery temperature, anticipated distance to destination, etc.
Considering that your battery, at the end of the drive, was likely at a reasonable operating temperature and then sat overnight in pretty cold temperatures it is not unreasonable to see a drop in SOC. It is unclear if 12% is reasonable or not. This experience is not a good judge of the condition of the battery/system.
It might be more practical to assess the condition and operation of the battery in a couple of months when the temperatures are warmer and more consistent if the battery report from the dealer does not identify a problem.
@LastOne thanks for explanation I agree not a good reference.
Just returned from dealer, they told me after Xentry report some of the "f" issues become "F" if it occurs again, so service will take care of it especially U186B29, including hv battery full diagnostic. I have been informed return of possibly Monday but if i.e. sensor, camera etc. needs change waiting for the parts might take time, so they might keep it longer. I am glad they will go through all, I will add here when I have my hands on battery report.
OK, things didnt turned out as i wanted , i dont know even i showed them your report bytemaster0 about what i wanted and they confirmed it with detailed cell data they just handed me attached paper, when i remind them it wasnt what i wanted they told me they will keep the car another day or two then i said nevermind. Sorry not much data but thats all i got at the moment.
I got 102% too wohoo I think yours between July 2022 - September 2023 , with 90.6 usable battery? According to ev database after Sept. 23 they lowered battery capacity about a kwH.
OK, things didnt turned out as i wanted , i dont know even i showed them your report bytemaster0 about what i wanted and they confirmed it with detailed cell data they just handed me attached paper, when i remind them it wasnt what i wanted they told me they will keep the car another day or two then i said nevermind. Sorry not much data but thats all i got at the moment.
I got 102% too wohoo I think yours between July 2022 - September 2023 , with 90.6 usable battery? According to ev database after Sept. 23 they lowered battery capacity about a kwH.
Interesting number of switch cycles. That said, I wonder if another MB dealership will be more willing to help?
Yeah I dont want to loose faith to this guys and switch service all the time, they are quite good in person, in a month or two when I find an excuse to visit I will ask them again. About switch cycles my understanding is it is something like remaining life cycle right? Do you see anything extra ordinary from this report?
Yeah I dont want to loose faith to this guys and switch service all the time, they are quite good in person, in a month or two when I find an excuse to visit I will ask them again. About switch cycles my understanding is it is something like remaining life cycle right? Do you see anything extra ordinary from this report?
Looks relatively normal, I see, if you have a good relationship with the dealership I guess do stick with it.
Thank you , yeah, let me be more clear , as a result nothing changed but also their quote played a role: "We have contacted Germany, MB Technician, went through together, according to HV battery everything ok, no danger , but about drops honestly we dont know". I dont know at this point MB technician and dealer both aware what happened but didnt mention any specifics as a response, so I will not chase it at the moment and I agree with bytemaster0 conclusion, I will give it a wider time range for observation.
Thank you , yeah, let me be more clear , as a result nothing changed but also their quote played a role: "We have contacted Germany, MB Technician, went through together, according to HV battery everything ok, no danger , but about drops honestly we dont know". I dont know at this point MB technician and dealer both aware what happened but didnt mention any specifics as a response, so I will not chase it at the moment and I agree with bytemaster0 conclusion, I will give it a wider time range for observation.
@bytemaster0 ok finally i was able to access my numbers, sorry for other issues i had to go and back service several times, today dealer let me sneak peak with mobile, so sorry for quality.
So no surprise, same battery setup,
90 cell x 2 pack,
my SOC: 75.40% (2 % lower than your report soc)
Avg cell volt.: 3.947V
Pack 1 imb. From avg. Cell 66: 7mV, 3.940V
Max pack imb.: 9mV
Pack 2 imb. From avg. Cell 128 (yours was 127, 0 indexed i guess 7mV, 3.940V
Max. Pack imb.: 11mV
@eqe300CZ , thanks for posting! Your imbalance spread is pretty good. Better than mine was, though I may have more charge cycles on the battery.
This week, I parked my sedan as I took my late father's X294 on a road trip to Charleston, SC. It was a 1200-mile trip (it was amazing to road-trip with the EV that long of a distance - 3 charges). I charged the sedan to 80% on Sunday afternoon. I got in this afternoon to drive it (Friday afternoon), and the voltage sag was just 1%! Somehow, the sag seems to be straightening itself out, or I don't know, but after 5 days, it had dropped about 1% in voltage, so somehow it seems to be either improving or stabilizing. I still haven't done my 100% top-end charges yet, but the problem seems to be resolving itself slowly. Very interesting!
@eqe300CZ , thanks for posting! Your imbalance spread is pretty good. Better than mine was, though I may have more charge cycles on the battery.
This week, I parked my sedan as I took my late father's X294 on a road trip to Charleston, SC. It was a 1200-mile trip (it was amazing to road-trip with the EV that long of a distance - 3 charges). I charged the sedan to 80% on Sunday afternoon. I got in this afternoon to drive it (Friday afternoon), and the voltage sag was just 1%! Somehow, the sag seems to be straightening itself out, or I don't know, but after 5 days, it had dropped about 1% in voltage, so somehow it seems to be either improving or stabilizing. I still haven't done my 100% top-end charges yet, but the problem seems to be resolving itself slowly. Very interesting!
Interesting to follow how this plays out, Bytemaster0! You are probably THE MOST qualified person on this forum to be posting about this, given you have THREE EQE's in the family and therefore good comparison statistics. I doubt anybody else here has THREE EQE's !
This sounds really good @bytemaster0 , I agree with @ScottC2 I know way more about my car since a month ago, I am also @ daily <=1% range , but 5 day sounds awesome, but I dont know if I can hold myself without driving 5 day now since its new to me! Crossing fingers that I hope a long calibration going on then also thanks to you now I know how to monitor battery health which I am planning to do yearly basis.
Interesting to follow how this plays out, Bytemaster0! You are probably THE MOST qualified person on this forum to be posting about this, given you have THREE EQE's in the family and therefore good comparison statistics. I doubt anybody else here has THREE EQE's !
LOL, what can I say, we're enthusiastic about the cars! A dear colleague of mine may be signing a lease on a new car this week, so we may have yet more data to go on!
Originally Posted by eqe300CZ
This sounds really good @bytemaster0 , I agree with @ScottC2 I know way more about my car since a month ago, I am also @ daily <=1% range , but 5 day sounds awesome, but I dont know if I can hold myself without driving 5 day now since its new to me! Crossing fingers that I hope a long calibration going on then also thanks to you now I know how to monitor battery health which I am planning to do yearly basis.
Okay. Rather big-ish announcement. Since I did the BMS recalibration a few weeks ago, and then left the car charged and then sitting for 5 days, the battery voltage/percentage sag seems to have gone mostly back to normal! Yesterday afternoon I charged the car to 80% and then drove it this morning. It was still on 80% 14 hours later, and stuck around while driving. It lasted longer at 80% than our SUV doing the same drive, so it seems to be pretty well normalized. The 2% sag seems to be gone now, fingers crossed! I wonder if charging the car and then having it sit for a few days helped the BMS figure out the cell imbalance spread and any potential voltage sag.
Given this, unless something changes significantly, I'll probably be closing off this chapter for now. Things seem to be working pretty well, and I'm confident in the health of the battery. Hopefully this new (original old) behavior persists, and all goes according to specification. That said, if anyone else has questions or needs to post, please feel free and I'll do my best to help in any way I can!
Just wanted to post back about 12 days later, the battery is still performing exactly as expected - no percentage drops overnight thus far, no matter the state of charge or when it was charged. Warm or cold weather, behaves the same. So, I'm pretty happy the behavior seems to have normalized. As mentioned before, if this changes significantly, I'll update. Thanks everyone!
Just wanted to post back about 12 days later, the battery is still performing exactly as expected - no percentage drops overnight thus far, no matter the state of charge or when it was charged. Warm or cold weather, behaves the same. So, I'm pretty happy the behavior seems to have normalized. As mentioned before, if this changes significantly, I'll update. Thanks everyone!
thx bytemaster for the update I stop daily tracking but after I saw your comment I also check myn yesterday, diff between night-day was around 6-10C 61%->61% , I scheduled my next tracking session next winter sub-zero temps
thx bytemaster for the update I stop daily tracking but after I saw your comment I also check myn yesterday, diff between night-day was around 6-10C 61%->61% , I scheduled my next tracking session next winter sub-zero temps
hello reporting again , since last report i added another 15k km, during 5 day with no interaction between temps 0 to 13 celc, 80% of time below 10 celc. 62% ->62%, i am quite happy with results, yet still i got another gremlin rear left door handle stop retracting after car was idle, they will adress today hopefully under warranty. OTAs i got since last report:
*increase robustness for driving
*BMS for digital vehicle key
*Vehicle charging system occupant restriction
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I think yours between July 2022 - September 2023 , with 90.6 usable battery? According to ev database after Sept. 23 they lowered battery capacity about a kwH. 
