DaveinOlyWA wrote: SageBrush wrote:
the 80% option was an incredibly stupid idea in an 80 mile EV.
Err. .... why ?
Not that your answer matters, in the sense that its availability and use by some owners like myself puts your assumptions to the test. After all, if 80 percenters are seeing accelerated degradation then it seems fair to say that battery cooking at 100% is not required.
range was already limited so make it more limited? It simply didn't make sense. We also have to realize that very low SOC is detrimental as well so the 80% range now has us at what? 55-60 usable? and that is only if we wanted to go past VLBW...
My family typically uses the 80% charge limit , and we do not go below 30% SoC in our daily driving. 100% charging is used for the occasional long trip. The average work commute in the US is 40 miles. This all makes sense to me.
As I said though, it is apparent that people DID and DO use the 80% limit as a routine charging routine so their battery degradation data is available. Here is my anecdote for you:
Average battery temperature through my 10 months of ownership: 63F
Outside in the summer, garaged in the winter
LBC events: two
SoC below 10% events: 0
Charging to 100%: under 10 events, remainder to 80%. Recharges when SoC reaches ~ 30%, usually twice a week
Charging starts at 5am, typical first daily use of car at 7-9 AM. L2 charging at 6 kW
Parking on sunny asphalt events: 0
Parking at home: in shade
Battery temp events of 8+ bars: 0
Battery temp events of 7 bars: 3, while driving
I think it is fair to say that the car has an easy life, and yet
Degradation: ~ 1 Ahr a month through the summer months
There is one benign explanation outstanding that I have not excluded: it may be that the real battery capacity of my LEAF was disguised by my purchase in January and it became apparent this summer. Next summer by the latest will tell the tale for sure, but if this scenario is true I should see my Ahr and SOH improve during the winter and then fall back again in the summer.