LeftieBiker wrote:Hopefully the almost 1% loss of SOH per month I'm seeing, despite my cooled garage, is just another BMS "error."
You and me both.
alozzy wrote:That's a very well written report and their methodology seems solid too. Pretty clear that the software update is legit, dealing only with an under reporting of SoH and the related GOM range estimates. Based on their findings, it's also clear that the 30 kWh packs are degrading in a very similar fashion to 24 kWh packs. Nice to have an independent analysis, rather than just taking Nissan's word for it.
You can bet the LEAF battery engineers caught flak when the batteries were clearly going to need replacement in large numbers by year ~ 3 when then execs were promised 6 - 8 years.Dooglas wrote: it has been interesting to see Nissan move forward with corrections in 30 kWh BMS programming and independent analysis confirming the anticipated result.
Pretty much what you'd expect as Nissan made no fundamental changes in the 30 kWh Leaf that would have caused it's pack to perform more poorly than the last 24 kWh model that it replaced.
LeftieBiker wrote:They increased the energy density by 25%.
Dooglas wrote:LeftieBiker wrote:They increased the energy density by 25%.
As has basically every other manufacturer. You were expecting a dramatic increase in battery degradation from everyone who increased energy density of the pack?
hmmwv wrote:Just saw my AHr dip below 50, so my 2013 with 53,144 miles is at 49.756 AHr / 76% SOH. This is down from 55.446 AHr / 84% SOH back in March of this year. This summer has been brutal on the car, this is the fastest drop in capacity I've seen. Since I've never changed driving, parking, and charging habits the overall higher temperature can be the only explanation.
cwerdna wrote:https://www.facebook.com/groups/nissan.leaf.owners.group/permalink/2215132265224269/ has a report of a '14 in the UK that just passed 100K miles with all 12 capacity bars remaining. The mild climate there is really helpful.