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500e Battery Degradation?
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Thread: 500e Battery Degradation?

  1. #1
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    500e Battery Degradation?

    Hi guys!
    I just got my first 500e, and am stoked! It's a beautiful orange with white'n'orange seats. I love it!!!!!

    i've only had it for 2 months. I bought it used with 10,000 miles on it, so fairly new. I had a concerning observation and I hope some of the senior folks here can help me out...

    Yesterday, I took it for it's first long drive on the highway, with the heater on, and on coming back, the battery gauge showed 20% remaining. I plugged it into my EVSE which has an app that shows you statistics like energy added (eMotorwerks Juicebox). After charging to a 100% from 20%, the EVSE said it added only 11.9KWh of energy....

    If 80% (100-20) of capacity is 11.9KWh,
    100% = (11.9/.8) = 14.75KWh!!!!

    The capacity is supposed to be 24KWh. 14.75 capacity means that it has degraded to 60% capacity?!! Am I doing something wrong here?

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    I would say keep driving it and perhaps drive it around your place (EVSE) when it gets really low. My guess is that the battery gauge (guessometer) calibration is off. I haven't heard much about battery degradation issues with the liquid-cooled Fiat, which is why I just bought one yesterday.

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    I wish I could help you, but I just don't know.

    im guessing since it's a used 500e that you don't have the "Fiat Access" app on your phone? It gives a readout of kHw used and kWh/mile calculation. If you could get the Fiat Access app to work, you might do another road trip and see what the app tells you?

    craig

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    How much time did it take to add that 80%? There is a pretty fixed rate at which your charger can charge (depending on its amperage).

    I would also look at amount of energy used per trip... and see if that matches up with what you are getting from the EVSE charge info... did you USE 11.9Kwh on that drive?

    another thought. You can be at zero percent on the gauge, and still have energy in the battery (ask me how I know... or take a look at my most recent post). That gauge is a very conservative estimate.. so that when Mr. Slow turtle comes on, drives still have enough energy to get somewhere safe.

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    Senior Member rnddude's Avatar
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    The battery gauge % is pretty accurate, the range readout is not to be trusted as it is an estimation based on the current conditions (speed, terrain, temperature, accessory use, wind, etc.)
    2013 500e Sport, Nero Metallic, all Abarth suspension, 17" Michi's, Koni Yellows, HID's

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    My battery gauge drops 4 % from 100 to 96 just by turning on the car and going 3 blocks.
    Not sure what its measuring... but at extream ends of the gauge, I'm not sure I trust it. Like I said... You can go a bit while at 0%. which means its not entirely based on the full charge of the battery.

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    sariaa (12-06-2018)

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    Roll call:
    Anyone with measurable degradation in range or battery capacity? If so, what's your mileage, charging habits, and climate? We have 45K miles on a 2013 model that gets level 2 charged to full, twice a day. It generally is driven from Orange County to Century City and back each day. No signs of degradation so far.

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    sariaa (07-28-2018)

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    Consider that just because the battery is 24kWh capacity does not mean you get to use all 24kWh. The car in all likelihood limits the depth of discharge (DOD) to some degree to maximize battery life. Taking it down 100% all the time would degrade the battery faster as does charging the battery full. In general usable battery capacity goes down in colder weather also. There is a heating loop on the battery, but it only works when the car is either charging or the key is on so if the car is fully charged and sits in the cold for a while you will lose more range from having to run the battery heater loop. I know this would show up on the kWh number.

    My 2014 seems to have lost maybe a few miles overall, this is expected considering it's four years old now. Right now the guess o meter is showing the high 90's for miles in the morning after a full charge. I expect to see it go a bit closer to 110 miles which is incredible considering the EPA estimate is 87 miles.

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    Quote Originally Posted by maximizese View Post
    Roll call:
    Anyone with measurable degradation in range or battery capacity? If so, what's your mileage, charging habits, and climate? We have 45K miles on a 2013 model that gets level 2 charged to full, twice a day. It generally is driven from Orange County to Century City and back each day. No signs of degradation so far.
    Is there a charging station somewhere in Century city? I'm about to move to LA for work and my office will be in Century City, and I'm thinking of buying 500e. PLease advise! Thanks!

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    Quote Originally Posted by Dmitry View Post
    Is there a charging station somewhere in Century city? I'm about to move to LA for work and my office will be in Century City, and I'm thinking of buying 500e. PLease advise! Thanks!
    There are plenty of charging stations. My wife's garage has 12 of them and hasn't had an availability issue yet. I would suggest you look on plugshare or the chargepoint website/app to see the charging stations availability in the area. Just to update, we hit 62K miles and still no sign of any battery degradation.

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