The expert battery guys on this forum might comment, but IMO, you'd have to go much lower SOC to show the real mV difference in cell 1. My Gen 1 would start showing much larger cell differences when approaching turtle or at least VLB levels.
Stanton said:@Learjet I'm trying to follow your "weak cell" concern, and this is what you've posted (I think):
- 167mV delta @95% SOC
- 132mV delta @38% SOC
If that's correct, I would add 1 more reading to this list ~20% SOC. If the jump is anything as dramatic as 38%->31% was, then I would expect it to impact range.
- 251mV delta @31% SOC
Stanton said:@Learjet I'm trying to follow your "weak cell" concern, and this is what you've posted (I think):
- 167mV delta @95% SOC
- 132mV delta @38% SOC
If that's correct, I would add 1 more reading to this list ~20% SOC. If the jump is anything as dramatic as 38%->31% was, then I would expect it to impact range.
- 251mV delta @31% SOC
OldManCan said:Stanton said:@Learjet I'm trying to follow your "weak cell" concern, and this is what you've posted (I think):
- 167mV delta @95% SOC
- 132mV delta @38% SOC
If that's correct, I would add 1 more reading to this list ~20% SOC. If the jump is anything as dramatic as 38%->31% was, then I would expect it to impact range.
- 251mV delta @31% SOC
Additionally if you can confirm the state in which you are taking the readings. Under load while driving or idle sitting on the driveway etc.
Learjet said:The Car will show 208 or more miles at 100%....
Yes, when the GOM hits about 40% it drops fast and erratically. I know LeafSpy says I have more range...but I don't want to be stranded on the side of the road....because the low cell is causing the early shut off of the car.
Marktm said:Learjet said:The Car will show 208 or more miles at 100%....
Yes, when the GOM hits about 40% it drops fast and erratically. I know LeafSpy says I have more range...but I don't want to be stranded on the side of the road....because the low cell is causing the early shut off of the car.
Appears you need to "test" the accuracy of the GOM's readings - either with a dealer rep or under conditions that you can limp back to a charging area. If you have an "early shut off", it would seem that a warranty situation is called for.
Here's a question for you "lifer" Leafers: if we had these kinds of numbers in 2011/2012, would there have been a class action law suit (for battery pack replacement)? Whether you look at it as a % loss or gross GIDs, I think the simple fact that we're talking about ~200 miles of range would have alleviated some of the range anxiety. I definitely think there's been an improvement in cell chemistry, but I still wonder what would have happened if Nissan just "bit the bullet" and pushed for a higher capacity battery pack initially...even if it added $10k to the cost of the car. The fact is, I really like my 2011 Leaf...now that it has a 40kWh battery pack.oxothuk said:For the past few months I've been doing full charges more often than I did in the past and making note of how many GIDS I have afterwards. When the car was new I once got to 763 GIDS, nowadays it's usually 705-720.
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