SageBrush said:Red does not mean bad. Change the color if you like.
SageBrush said:The SOH of 95% does warrant watching ... not that you can do anything or expect Nissan to do anything until four bars of capacity of lost. Do you know if the Ahr was higher when new ?
No. AHr is not a %. From your screenshot, you have 75.48 amp-hours. Your SOH of 94% and Hx of 90.58% isn't that concernng.RomanG said:Just 4 days ago Hx=91.13% and Ahr=76% (I'm using LeafSpy just for couple of days so found my problem this late)
Nothing really. There could be a bug or the shunt order setting in Leaf Spy could be wrong for your vehicle. You could try mucking w/the shunt order setting to see if this symptom goes away.RomanG said:What service action would you recommend me to do in this case?
cwerdna said:No. AHr is not a %. From your screenshot, you have 75.48 amp-hours. Your SOH of 94% and Hx of 90.58% isn't that concernng.
cwerdna said:Nothing really. There could be a bug or the shunt order setting in Leaf Spy could be wrong for your vehicle. You could try mucking w/the shunt order setting to see if this symptom goes away.
No, I do not charge to 100% each time, my charging pattern is mostly 25%->55%->25%->...baustin said:Do you charge the battery to 100% each time? If not, how many times have you charged it to 100%? It needs to be done on a regular basis to balance the cells in the pack. Just don't leave it sitting at 100% charge for extended periods of time, especially during times of high temperatures.
Your car's battery has a capacity, and the battery management software in the car produces an estimate of that capacity. Leaf Spy is reading the estimate, not the actual capacity. There are measurement accuracy limits as well as some odd battery behavior that limit how accurate the estimate can be.RomanG said:Yes, my bad. I meant battery has lost 0.52AHr of its capacity (from 76Ahr to 75.48Ahr) in just 4 days.. and I have no idea how to stop it.
Yes, my error.LeftieBiker said:The Leaf does indeed have a BMS - I don't know where sagebrush got that idea. You happened to get a LeafSpy shot of the pack equalizing - which is done by the BMS.
Thanks for pointing this out - I was not aware of capacity estimation...WetEV said:Your car's battery has a capacity, and the battery management software in the car produces an estimate of that capacity. Leaf Spy is reading the estimate, not the actual capacity. There are measurement accuracy limits as well as some odd battery behavior that limit how accurate the estimate can be.
Great, will try this ASAP.WetEV said:The estimate does vary for reasons other than the actual battery capacity changing. Driving for a while with partial charges seems to reduce estimated capacity, and there is little reason to suspect this produces any long term damage to the battery. A 100% charge or two often reverses this. A long trip with nearly full usage of the battery (100% to 10%) with a DCQC often increases the estimated capacity.
WetEV said:I've got LeafSpy logs since 05/02/2016.
Highest AH in that period was in 03/03/2017. Up 2.6 Ahr from 06/23/2016.
Linear trend over this period has capacity reduced by 1.5 Ahr.
I suggest trying to ignore the day to day, week to week and even month to month variations in capacity estimates.
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