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It's been a couple of days and I've just had my ODB2 dongle.
Short recap, car no longer returning decent mileage, battery running out quickly. It a 2016 Leaf 30 / 32k miles
Car is sitting at 100% battery charge and unplugged. Can anyone please interpret?

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Leaf 30kWh, Outlander PHEV
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It's been a couple of days and I've just had my ODB2 dongle.
Short recap, car no longer returning decent mileage, battery running out quickly. It a 2016 Leaf 30 / 32k miles
Car is sitting at 100% battery charge and unplugged. Can anyone please interpret?

View attachment 133208

View attachment 133209
At fully charged state not much to tell. Cells are balanced well. Everything looks normal. Now go for a drive, keep going. Take screenshots at 50%, 25% and when you get very low battery warning (when it hits 7%)

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@Mr Roboto

This is mine, looks like you are doing better than I. However, I can manage 110miles in average conditions.
133211
 

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@Mr Roboto

This is mine, looks like you are doing better than I. However, I can manage 110miles in average conditions.
View attachment 133211
A lot depends on state of cells are various states of charge. Full battery tells very little

Sent from my SM-G973F using Tapatalk
OK here are a couple more 41% today and 18% in April 2020
EDIT:Forgot to remove vin, gimme coupla mins
 

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@Mr Roboto

This is mine, looks like you are doing better than I. However, I can manage 110miles in average conditions.
View attachment 133211
A lot depends on state of cells are various states of charge. Full battery tells very little

Sent from my SM-G973F using Tapatalk
OK here are a couple more 41% today and 18% in April 2020

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Leaf 30kWh, Outlander PHEV
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I'm sure it has been mentioned before, but I found this interesting plot at flip the fleet: Benchmark your Leaf before buying! - FlipTheFleet The figures are updated to the beginning of June 2020 so are up to date. Interesting to note that the best 2017 30 kWh cars are doing slightly worse that the best 2016 year models (91% vs 92%), the worst 2017 cars are at 78% already vs 79% for the 2016 cars. I wonder what happened in 2017? Also, given that the guarantee covers you for degradation below 9 bars in 8 years which should occur at around 66% (12th bar = 15% and 11, 10,9 are each 6.25%) I think most of us are still going to be above that, given that the degradation seems to be large to start with, then slows down. 3.5% a year, which is what mine is averaging, would only get down to 72%

The figures show that the 50th percentile SOH for a 2016 30 kWh Leaf is actually around 86%. So although I've been panicking (and definitely think the range has dropped off slightly more than it should) my car at 87% and Barfly's at 87.8% are both slightly above the average. Mr Roboto at 89.15% is actually 3% above the average. the total range between the 5th percentile and the 95th percentile is from 79%-92%.

That's not to say that someone hasn't got a failing cell that messes things up at lower charge levels.

I think one of the problems is that someone always pops up with something along the lines of 'My 2014 Leaf has done 120000 miles and is still at 95% SOH'. This inevitably causes panic in those of us with lower figures, wondering what we are doing wrong, when our figures are actually normal.

Looking forward to seeing Mr Roboto's figures at a low state of charge
 

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30KW Tekna (2017)
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That battery looks alrigh5 actually, but Dave is right lets see if there are any weak cells at a low, SOC, but in all honesty, it’s looks completely normal.
 

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Leaf 30kWh, Outlander PHEV
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I'm doing 89.16% with Leaf at 35k, 66 reg Leaf30. I posted a degradation polynomial a while back.

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Oh here it is

36 month expected degration would be 80.95%
35k miles expected degration would be 81.75%

Mine is at 89.16% so unlikely to go below that polynomial for warranty claim
 

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Oh here it is

36 month expected degration would be 80.95%
35k miles expected degration would be 81.75%

Mine is at 89.16% so unlikely to go below that polynomial for warranty claim
That is an extremely useful graph and info. I've bookmarked it and will monitor SOH against it over the next couple of years. Thanks.

I presume this is a worse prediction than for those batteries that have a proper temperature management system?
 

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It's been a couple of days and I've just had my ODB2 dongle.
Short recap, car no longer returning decent mileage, battery running out quickly. It a 2016 Leaf 30 / 32k miles
Car is sitting at 100% battery charge and unplugged. Can anyone please interpret?

View attachment 133208

View attachment 133209
Your Hx is low. I expect at low SOC you have some unbalanced or even weak cells.
 

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Leaf 30kWh, Outlander PHEV
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That is an extremely useful graph and info. I've bookmarked it and will monitor SOH against it over the next couple of years. Thanks.

I presume this is a worse prediction than for those batteries that have a proper temperature management system?
That's worst case scenario. I am think most manufacturers follow similar warranty so worst case degradation shouldn't be far.

Water cool systems should have lower degradation

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