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Author Topic: Help, some SoC (%) Values are never displayed (from 82% to 80%)  (Read 434 times)

KuRi

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Help, some SoC (%) Values are never displayed (from 82% to 80%)
« on: December 01, 2020, 03:32:50 PM »

Hi!

I have noticed that my DSR 2020 is not showing some SoC Values in the display. It jumps from 85 to 83 and from 82 to 80. I also noticed that when at 80% and after some small regen it jumped back to 82%.

Is this normal? Something to worry about? Should I discharge the battery almost completely to force a re-balance? The logs don't show any problem and I am not noticing a decrease in total battery life.

P.D: I have checked some old logs and those values are there (81% and 84%) so this behaviour is new.
P.D2: I have just checked more recent log, and all values are there. It is just the display is not showing them... round error?

Thanks!
Regards,
Luis.
« Last Edit: December 01, 2020, 05:07:32 PM by KuRi »
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NervEasy

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Re: Help, some SoC (%) Values are never displayed (from 82% to 80%)
« Reply #1 on: December 01, 2020, 05:56:45 PM »

round error:

81 - 61 - 41 - 21 - 1 are never shown.

Has been a topic before.
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KuRi

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Re: Help, some SoC (%) Values are never displayed (from 82% to 80%)
« Reply #2 on: December 01, 2020, 06:40:45 PM »

Thanks! I did not know that :D

But today the 84% did not show either :)
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NervEasy

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Re: Help, some SoC (%) Values are never displayed (from 82% to 80%)
« Reply #3 on: December 01, 2020, 06:54:35 PM »

Do you have the latest 31 and 38 firmwares? I noticed these changed the way the SOC is calculated. They say in the release notes these firmwares have more accurate soc in extreme temps. Here is is arround 0 deg celsius and the SOC is slightly different on my morning commutes. Stays higher longer to drop faster in the end.

Anyway the number I posted before are never shown on any S DS platform bike. •mine shows 84% so maybe you just missed it or the new firmware is calibrating itself.
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KuRi

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Re: Help, some SoC (%) Values are never displayed (from 82% to 80%)
« Reply #4 on: December 01, 2020, 07:25:17 PM »

Hi! No, I did not install the latest firmware yet (dont repair it if it is not broken :D).

Thank you very much, very userful information there!
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Richard230

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Re: Help, some SoC (%) Values are never displayed (from 82% to 80%)
« Reply #5 on: December 01, 2020, 08:47:32 PM »

My 2014 S with PT used to do that.  However my 2018 S with PT does not have an SOC display that jumps around. It is very stable. It also has no problem showing odd numbers.  :)  Needless to say I have no idea what is going on with Zero's SOC calculations.  ???
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DonTom

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Re: Help, some SoC (%) Values are never displayed (from 82% to 80%)
« Reply #6 on: December 01, 2020, 09:31:26 PM »

My 2014 S with PT used to do that.  However my 2018 S with PT does not have an SOC display that jumps around. It is very stable. It also has no problem showing odd numbers.  :)  Needless to say I have no idea what is going on with Zero's SOC calculations.  ???
I know one theory is that those 5 missing  SOC numbers is what gives your "reserve tank" at zero SOC.  IOW, Zero SOC is really 5 SOC.

-Don-  Pahrump, NV (RV with Zero DS)
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Richard230

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Re: Help, some SoC (%) Values are never displayed (from 82% to 80%)
« Reply #7 on: December 02, 2020, 04:32:34 AM »

My 2014 S with PT used to do that.  However my 2018 S with PT does not have an SOC display that jumps around. It is very stable. It also has no problem showing odd numbers.  :)  Needless to say I have no idea what is going on with Zero's SOC calculations.  ???
I know one theory is that those 5 missing  SOC numbers is what gives your "reserve tank" at zero SOC.  IOW, Zero SOC is really 5 SOC.

-Don-  Pahrump, NV (RV with Zero DS)

Could be. That makes as much sense as any other idea.  ???
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Crissa

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Re: Help, some SoC (%) Values are never displayed (from 82% to 80%)
« Reply #8 on: December 02, 2020, 12:59:17 PM »

Remember, the SoC is a balance between the current voltage (which varies by current draw), the current battery temperature, and some magic of previous charge cycles.  So it can jump around a bit.

-Crissa
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