Study Ideas - Battery Degradation

Maybe increased frugality levels, too?

I used Ken's as a base for my own that I've added some columns to for comparing to other cars. Enlightening!!

OK!! All charged up. Here I go.

 

yes, there might have been some youthful exuberance. after all, i was only 57 when i got her.

 

OK, I'm back from my "baseline" run. It was way more sedate than the usual commute, but still not ideal.

I started with a predicted 12.8 miles of EV range, the most I think I've ever seen thanks to some short, non-highway trips the past couple days.
Temperature ranged from 78-80°F.
I finished a block from home at the same elevation.
I drove with the windows down enough to let in some air and ran the vent fan on 2. No A/C.
Speed limits were mostly 35 with a little 25 and a short burst of 45.
Lots of stops. But that's Tampa.
Roads were wet but I only hit a couple puddles and there was no standing water other than those two puddles.
Terrain was flattish with quite a few 10-25 foot "hills."

Engine came on at 14.3 miles. Average speed was 19 mph, which is a higher average speed than my work commute even though I never drove nearly as fast as I do on the commute.

I expected better since I was using every trick I know and there was very little "push" from traffic. But there were a LOT of stops. That couldn't have helped.

We'll see what it takes to charge it in the morning.

 

wet roads can hurt. i suspect we're all in the same boat. degradation starts fast, and slows after the first year or so.
the only question, why mark and jerry charge amounts so far apart?

 

Sorry. None that I know of. There is free charging at Tampa International Airport, but I've only been there to use it twice since I got this car. And I don't remember it having a meter since it's free. This part of the country seems to be pretty oblivious to plug-ins even though I see a Tesla or two almost every day.

I am considering a new Killawatt, though. Yesterday, before my test run, the display went blank. I thought maybe it was dead, but the power indicator on my EVSE was still lit. I unplugged the Killawatt, plugged it back in, and the display came back. But of course it read 0.00 kWh. We had had a huge lightning strike nearby earlier in the day, so it may have been a voltage spike.

 

I am late to the party, took a vacation
Subject was also discussed in "PIP EV falloff" thread. My experience over 3.5 years up to Jan 2017 and 42000 km (27500 of them - EV) was summarized in:
PIP EV range falloff | Page 7 | PriusChat

 

I remember seeing that. Nice chart.

By the way, after charging this morning, the Killawatt said it took 3.40 kWh.

 

Is Charge Point level 2?
I have started measuring 'payable charge' i.e. from wall in late 2013 when car was about 3-4 months new and got (at 230V line) 2.95-3.0 kWh to full at that time, when 'starting point' was 6 bars on the HV battery icon.

 

Good point. I think it is L2, so there is a little less overhead power wasted. Not sure how much.

 

mark, in giro's link above, you stated that feel you have lost about 65% of capacity since new. do you still feel that way?

 

and yet, you still get close to the same ev miles as jerry and me.

 

my PiP (2013 model) , always charges 2.74 KwH, I bought it a month back, used.

 

The 3.4 kWh was probably with L1 charger and the 2.44 kWh with L2, plus starting SOC plays a roll as well as temperature.
I wouldn't jump into conclusion based on only two inconsistent measurements.

 

The best I have gotten was 12.5 miles and that was a maximum speed of 45mph. Now that I'm running my A/C full time I'm getting about 8 miles range. I have noticed temperature plays a huge roll also in battery range