DNAinaGoodWay
Well-known member
It does vary, but I don't think that I've seen more than 32. Certainty not bad cells like this OP. A few people here have had CVLI tests and that's what's I'd recommend.
nenik said:Could this be the "Shunt Order" setting? There was an argument whether it should be 8421 or 4812.
RegGuheert said:If one of the balancing transistors is failed on the "ON" position, I would expect the LI-ion battery controller to throw DTC P3062: BYPASS SW. But I don't know how long it will take the controller to come to that conclusion.
Hopefully whatever is discharging (or previously discharged) cell-pair 51 is NOT the shunt and the imbalance will be corrected over time with no further issues.
nenik said:The other possibility, a bad cell is quite unlikely - you have captured the battery state at the full charge. If that one cell was weaker, it would be the highest-voltage one after charging, not the lowest one. But to further diagnose the issue, you could capture a screenshot at the low battery state too. If the cell 51 is still the lowest voltage cell (very likely, this matches your observation of sharp decline in the range while driving), it's just some initial imbalance in the pack and it could even out when left long enough on the charger.
DNAinaGoodWay said:It does vary, but I don't think that I've seen more than 32. Certainty not bad cells like this OP. A few people here have had CVLI tests and that's what's I'd recommend.
Here is my detailed transcription of how to perform Cell Voltage Loss Inspection (CVLI) so that anyone with LeafSpy can do the test.Cryptizard said:Sorry for my ignorance but what is a CVLI test?
Cryptizard said:nenik said:Could this be the "Shunt Order" setting? There was an argument whether it should be 8421 or 4812.
That was it! Thank you! Changing the order in LeafSpy made it show correctly that all cells but 51 were discharging.
GerryAZ said:Could you post the shunt order setting which gave the correct Leaf Spy display? I have been trying both shunt order settings first on my 2011 and then on the 2015 and have been unable to tell which setting is correct. I would like to see screen shots after full charge and discharged as far as you feel comfortable with (at least low battery warning, but very low battery warning or lower would be best) before commenting in detail, but you clearly have manufacturing defect(s)--either bad cells or instrumentation (cell voltage measurement errors).
RegGuheert said:Here is my detailed transcription of how to perform Cell Voltage Loss Inspection (CVLI) so that anyone with LeafSpy can do the test.Cryptizard said:Sorry for my ignorance but what is a CVLI test?
3.712V is approximately at LBW, so going below that level is no big deal. The test is not to see if any cells go below 3.712 volts. Rather you need the lowest cell to be below that level before you make the CVLI calculation since the LEAF battery is top balanced.Cryptizard said:Is that information up to date for the 2016 Leaf? Because I have 3 cells that are substantially below 3.712V (the poster there made it seem like even getting to 3.712V was uncommon, let alone below that), and even the "working" cells are pretty close to it. I don't know what the correct values for these are though, maybe it only looks like the good cells are "close" because the scale is messed up due to the fact that the other three are so low.RegGuheert said:Here is my detailed transcription of how to perform Cell Voltage Loss Inspection (CVLI) so that anyone with LeafSpy can do the test.Cryptizard said:Sorry for my ignorance but what is a CVLI test?
RegGuheert said:The test is not to see if any cells go below 3.712 volts. Rather you need the lowest cell to be below that level before you make the CVLI calculation since the LEAF battery is top balanced.
The bottom line: your pack SHOULD fail (badly) a CVLI test at a dealership today. But I would be inclined to make measurements with the pack FULL occasionally over a couple of weeks to see if the spread gets lower over time. If it doesn't, then there is something not working properly.
Regarding the bolded part: I would say that the tires will NOT wear evenly if you leave them at 35 PSI, but if you increase the pressure to 40 PSI they will. At 35 or 36 PSI, they will wear out on the edges and not in the center, indicating the pressure is too low.johnlocke said:Just a quick note. Your tire pressures are low. 35 psi is way low for this car. Most people run 40-43 psi. Tires will still wear evenly and you pick up 3-5 more miles per charge. Not world shattering but every little bit helps.
johnlocke said:Just a quick note. Your tire pressures are low. 35 psi is way low for this car. Most people run 40-43 psi. Tires will still wear evenly and you pick up 3-5 more miles per charge. Not world shattering but every little bit helps.
RegGuheert said:Regarding the bolded part: I would say that the tires will NOT wear evenly if you leave them at 35 PSI, but if you increase the pressure to 40 PSI they will. At 35 or 36 PSI, they will wear out on the edges and not in the center, indicating the pressure is too low.johnlocke said:Just a quick note. Your tire pressures are low. 35 psi is way low for this car. Most people run 40-43 psi. Tires will still wear evenly and you pick up 3-5 more miles per charge. Not world shattering but every little bit helps.
And manufacture date (not delivery date)johnlocke said:Can we hear from all the 2016 Leaf owners about where their battery stats are now? If you own a 2016, please use LeafSpy on your car and post the battery stats and current mileage. Even if your battery is pristine, let us know! There may be a problem with the battery in general or it might just be a bad batch but the only way to find out is to gather as much data as possible.
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