So, I’m finding that using 80% of my battery (100 to 20%) I went 137 miles (3.3 m/kWh). 65mph, ac on. I looked at my Car Scan an noted that, After some recharging) there was a difference in voltage and state of charge in one cell. Cell 90 showed 52% charge, which was three save on all of the others, and cell 91 showed 35%. Is this one cell enough to cause this lousy distance? Or is this a symptom of something deeper? Our have I just become an EV hypochondriac. Thanks
Battery issues? [cells out of balance]
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Ebennettr
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Thanks, I'll try. How much should I deplete it before doing a level 1 charge? Also, driving 180 miles tomorrow and will need to dcfc at EA. Anything I should do, ch ck or look out for? Thanks!
And yes I believe there was a module change. I'll update tomorrow when home
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SOC is not important from where you start charging....just follow advice i have posted before.
Care to post services ticket for this repair..... I'm questioning technician ability to follow all necessary steps for getting pack in balance with other modules in the pack.
Cells are not replaced individually....if one cell in module is bad entire module is replaced. If module in question is in parallel arraignment both modules in parallel are replaced at same time ( one with bad cell in module and another in parallel ).
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If starting form low SOC of charge....you can use L2 charging and switch to L1 8-10A charging when you are at 80% SOC till you get to 100% SOC and do not unplug EVSE even after is done charging....live it for 24 hours and if it is charging on his own again do not interrupt this until it is done on his own. And values should be taken after 4 hours of completion of charging.
And all EVSE charging should be done without interruption or using any scheduled time .
And all EVSE charging should be done without interruption or using any scheduled time .
From the second screen we can see that modules 5 and 6 were replaced (out of 12 modules in the battery), but not balanced with other modules. Or maybe drifted away again, not sure.
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Definitely I'm questioning technician ability to follow steps while changing 2 modules in battery pack.
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Thank you....I will take it from here. And to confirm is person who worked on your vehicle one that is on service ticket?
I did not want you to see info as I don't want to get someone in trouble. It's new technology and mistakes happen
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And please mask VIN number and update your pdf file.... private things need to be private.
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@Mikbee
Let me know when you get the chance to do balancing on your end with instructions i have posted here.
I will need this once you are done.
I will be polite as much as my job description is allowing me with this service department.
I have been there more than once so I'm quite familiar with dealership owner and service department technicians.
And I'm in this part of US not far away for a moment.
Let me know when you get the chance to do balancing on your end with instructions i have posted here.
I will need this once you are done.
I will be polite as much as my job description is allowing me with this service department.
I have been there more than once so I'm quite familiar with dealership owner and service department technicians.
And I'm in this part of US not far away for a moment.
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And another question.
How you been in contact with service advisor or technician after repair was done, and have you received any verbal instructions on how to check your vehicle in next couple days or weeks of charging.
How you been in contact with service advisor or technician after repair was done, and have you received any verbal instructions on how to check your vehicle in next couple days or weeks of charging.
Charge the same as usual. It balances after every charge. If you notice a big difference between highest to lowest cell volts with car scanner 4 hours after charging, it means you have a problem which may need a dealer visit. Otherwise, nothing needed to keep them balanced. A deep cycle <10% and >90% is good every few months so the BMS learns the pack capacity, but not required for balancing.
Thank you!
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