Results from Honda were exactly what my major concern was. They said there is no problem.
I had them give me the Battery Capacity number at the last minute before I took the car back after 3 days. It read 49.6. At 320V that would be 15.8KW I believe. Does anybody know if that is within spec?
I'm not happy.
Text of Honda service department
CUSTOMER STATES BATTERY CHARGING SYSTEM IS
STILL SHOWING AND ABNORMAL GRAPH. WAS IN ON
RO 6383665 ON 05/09/2019 TECH PERFORMED SOFTWARE
UP DATE PER BULLETIN 18-097
SEE ATTACHED SHEET
Caused by
CALLED TECH LINE ABOUT GRAPH CONCERN AND MPG
ON A FULL CHARGE, TECH-LINE ADVISE TO NOT GO OFF
OF GRAPH DUE TO TOO MANY VARIABLES, CHARGED
VEHICLE WITH SHOP CHARGER ON FULL CHARGE AND
EV RANGE SHOWED 39.9 ON A FULL CHARGE, TECH-LINE
SAID THAT IS NORMAL, VEHICLE CHARGED FINE NO
PROBLEMS, COULD BE DRIVING AND CHARGING HABBITS
NO PROBLEMS FOUND AT THIS TIME LO# 118092 .3HR
Our ambient temperature over the last couple of days has been in the mid 60's.
I have two plans in mind.
1) Contact Honda Customer Service to see if they can do anything about this.
2) Trade in our Clarity and buy a new one. We like the car. If I can get one for $5K under invoice, and get about $22K for my trade in I'll break even with Federal and State incentives.
Honda High-Voltage Battery Limited Warranty:
Gradual capacity loss of the high-voltage battery is expected and not covered under warranty. Greater-than-normal degradation is covered for 8 years or 100,000 miles, and can be determined by an authorized Honda Clarity Plug-In Hybrid dealer.
If I use 47 miles as the baseline then if 39.9 is within spec it is a 16% drop in 18 months. We Clarity owners should all be concerned if this is normal behavior.
By the way our Clarity didn't sit on a lot for months. We literally bought it off the truck on Dec 5, 2017.
Any other suggestions?