Budget Battery Capacity Readout

With a PHEV, there isn’t a meaningful relationship between miles traveled and battery condition. Had all those miles been covered in EV mode, the batteries would have been subject to ~5000 full charge cycles, or perhaps 10,000 partial charge cycles.

Alternatively, had those miles been covered in HV mode with depleted batteries, as one member reported operated the car, it would be reasonable to expect the battery capacity to be measurably different from a vehicle that covered those miles in HV with the battery mostly or full charged during operation.

 

25% EV miles is pretty close... I have burned 3644 gallons of gas. X 40 mpg = 145760 miles on gas... 57,000 EV
(I think I am closer to 36 mpg or less, for 131,184 gas, and 72,000 EV - most of miles are over 75 mph)

 

Just bought the scanner and put in my first reading, 46.7 at 73,400 miles. Since I do drive conservatively in most of my use it means I have done a lot less total charging than others with the same miles and similar EV percent around 90.

Just got my GOM to indicate slightly over 70 miles of EV range, but may be the last time I get there as the battery fades. Assuming the car was at 55 when new that means I could have gotten 82 miles of EV range on the flat if I knew what I was doing back then.

 

Another way we had talked about tracking battery capacity was the KWh used for a full charge.

Last night I charged at one of my 'normal' spots and used 11.37 KWh. Last summer it was 12.37 - 12.44
(My battery recently reported 44.06).

EV range started at zero. Battery was about 9% on OBDII, and charged to 99%

 

Something extremely strange happened.

On Nov 2022 I reported my battery capacity was at 44.6Ah. I decided to do a check this evening and found out it was at a whooping 53.36Ah! I have a 2018 with 71500 miles on it. I attached a screenshot of the readings here for everyone's reference. Am I reading it wrong? Is temperature the contribution to this discrepancy?

Any insight will be much appreciated.

 

My car was with the dealership 3 weeks ago for replacing the AC condenser so that is likely why. But I never lost any of my radio settings so I do not know if they actually disconnected the 12V. It is truly a blizzard phenomenon even the kwh that the car is able to hold is higher now.

 

I checked mine again today. My battery is currently at 44.9 AH. I now have 111,862 miles on my car. I was at 45.0 AH at right around 100k miles. So only a .1 decline in roughly 12k miles. It appears my battery is holding up fairly well.

 

Is that “New Math”?

The old method would have it at a .4Ah increase.

 

I corrected my post. Sorry about that. It wasn't a math error. It was a data entry error.

 

Just got a VGate and at 51,000 miles, 75-80% EV driving, my battery is showing 42.06 Ah on a 2019 Base, gonna start logging now and maybe I can hit the magical replacement number.
Bought this car 13 months ago and have put 27,000 on it in that time

 

Wow that is pretty low capacity for the mileage. Are you in California or one of the other ZEV states where the warranty is 150k miles at 70%? You're already at 76.5%

 

I love my Clarity so I'm excited to see people achieving high miles on theirs. It gives me hope I can keep mine for a long time.
One thing with battery chemistry, irrespective of miles driven, charges and discharges, the ability to hold charge does fall off if enough time passes. Anyway, my point being that we don't know yet due to age how long the battery pack can last in Clarity. I saw an article (maybe here) recently about 15,000 EVs and only 6-7% needed a new battery since 2011. Anyway, more than 10 years and not a terrible battery fail rate.

So here's to hoping I can keep driving my clarity 16 years like I did my last car...

 

One of the huge advantages of a PHEV is of course you can drive it about forever, just more engine/less EV miles over time.

 

It certainly possible, but I'd be shocked if the non-operating threshold is anywhere near the warranty threshold. The hybrid drive system is fundamentally the same as that used in some Honda hybrids with vastly smaller batteries, and those systems themselves have excess capacity to allow them to deal with battery degradation. The old Civic hybrid had a battery that was less than 10% the size of the Clarity battery.

Of course the Honda engineers made some stupid decisions at times, so it's certainly possible they configured it poorly

 

No, car is from Cali but I'm in Florida.
But I only need to lose 6 Ah in the next 45k miles when I've lost 13 Ah in the first 50k.

 

How would you categorize a 6-7% failure rate of internal combustion engines over a 10-12 year period?

Were it not for a generous federal emissions warranty on the battery and electric drivetrain components, a knowledgeable buyer might not consider an electrified vehicle for the long term.

 

Someone else here might correct me, but since you are in Florida I think you have to lose another 10.5 AH to achieve the warranteed battery replacement threshold (66% or less).