88 is the new 90?

[Scottie’s MachStang]

I regularly charge using the level 2 chargers at work. Vehicle recognizes the location and sets to charge to 90%.

the charging session will complete - with notification from both the car and the charger that charging is complete. The app will even show me that the car is at 90%

when I get to the car and start it - it reads 88%

It is not a major concern- just odd. Where does that 2% go?

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[superdave80]

This is fairly common (mine would routinely drop to 89% right after I unplugged). It's probably a combination of Ford sucking at rounding numbers, and changes in temperature after the charging is done. Weird, but nothing to worry about.

 

[A-A-Ron]

I regularly charge using the level 2 chargers at work. Vehicle recognizes the location and sets to charge to 90%.

the charging session will complete - with notification from both the car and the charger that charging is complete. The app will even show me that the car is at 90%

when I get to the car and start it - it reads 88%

It is not a major concern- just odd. Where does that 2% go?

Are you parking on a slope? Sometimes the tank reads a little high or low on a hill.

Seriously though, no one thinks the fuel indicator on their ICE car is this accurate, it cracks me up that people worry about this in an EV. Trust me, calculating charge levels on any battery is a guess, and on a complex, multi-cell battery, it's an average of hundreds of guesses. It's close, but it's definitely not accurate to the level you think it is.

 

[dwst480]

Mine often drops to 89 or rises to 91 shortly after unplugging, so I don't think 88 would be unheard of, although I agree it's a bit odd.

Just yesterday, after unplugging at 90% in the morning, driving 5 miles to work, and letting it sit outside in the cold all day, I noticed mine at 91% when I got back in to drive home at the end of the day. That was odd to me, considering the cold conditions and the fact that most days over the last few months I'd noticed it around 86-87 at the same point in the day. Not going to complain, though. Like the OP, I'm not particularly worried about it, but I do find it curious.

 

[dabois89]

It happens to me a lot, i usually chalk it up to nothing is perfect or exact in this world or the buggy ford app is just that buggy.

 

[Tomm]

I have noticed this as well and ignored it.

 

[Scottie’s MachStang]

Ignore it is.

 

[curiousurick]

The reason I heard a while ago is that when you’re charging, the battery gets warmer which allows higher voltage. When it cools, the voltage goes down a bit. And the % is based on kWh which is amp-hours x volts. The same number of amp-hours remain in the battery, but multiply that by a slightly lower voltage, you’ll drop a few %. Sometimes, the % will increase in the first few miles when I leave the house as well.

No idea if this is true, but it makes sense to me.

 

[CameraCarl]

Monday the post was "90% somehow became 89" and today it is "90 somehow becomes 88". Tomorrow who is going to be the first to post "my 90% charge somehow became 87%"?

 

[rreddy3]

Are you parking on a slope? Sometimes the tank reads a little high or low on a hill.

Seriously though, no one thinks the fuel indicator on their ICE car is this accurate, it cracks me up that people worry about this in an EV. Trust me, calculating charge levels on any battery is a guess, and on a complex, multi-cell battery, it's an average of hundreds of guesses. It's close, but it's definitely not accurate to the level you think it is.

I write it off to the electron eater, first cousin to the sock eater?

 

[ChasingCoral]

Are you parking on a slope? Sometimes the tank reads a little high or low on a hill.

Seriously though, no one thinks the fuel indicator on their ICE car is this accurate, it cracks me up that people worry about this in an EV. Trust me, calculating charge levels on any battery is a guess, and on a complex, multi-cell battery, it's an average of hundreds of guesses. It's close, but it's definitely not accurate to the level you think it is.

Absolutely. You get a few stray neutrons into your electron tank and the float used to test your %SOC gets stuck to the wall of the tank.

 

[Sikkun]

Are you parking on a slope? Sometimes the tank reads a little high or low on a hill.

Seriously though, no one thinks the fuel indicator on their ICE car is this accurate, it cracks me up that people worry about this in an EV. Trust me, calculating charge levels on any battery is a guess, and on a complex, multi-cell battery, it's an average of hundreds of guesses. It's close, but it's definitely not accurate to the level you think it is.

WHY IS MY GAS TANK ABOVE THE FULL LINE, HOW CAN I HAVE MORE THAN FULL!

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