Charge to 100%

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Scratch
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Post by Scratch » Wed Jan 12, 2022 5:23 pm

I realise it's preferred that if you charge to 100% then you should use the car sooner rather than later, but would it be detrimental to leave the car charged at 100% for something like 12 hours.
The reason for asking is that there appears to be some doubt as to whether a scheduled charge set on my Zappi 2 will work or not.
I don't use the car's timers, as I believe they are also unreliable. (don't you just love EV ownership? :? )
Any advice appreciated.

scott28tt
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Post by scott28tt » Wed Jan 12, 2022 5:31 pm

Personally I wouldn't do it unless I had to.

Others will say that the car systems should manage it regardless, that they do it all the time, it hasn't "hurt" their ID.3, they used to do it all the time in their Leaf/i3/etc...

It's like a bingo card kind of question ;-)
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Raxacorico
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Post by Raxacorico » Wed Jan 12, 2022 5:33 pm

I find that if I set my Zappi 2 to give me four hours on my cheaper overnight tariff, it just works. I've set it up for every day of the week; so whenever I actually plug it in it just works overnight. This is on the Eco++ setting, it does not work like this on other settings. You have to manually work out how much charge you need to give, depending on the final SOC you require. So to answer your question, you can acheive 100%, set on your car, and adjust the number of hours required to acheive that. Then you drive off. There's no need to get the car at 100% that far (12 hours) in advance; and is not good practice when trying to keep a healthy battery.
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Scratch
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Post by Scratch » Thu Jan 13, 2022 6:23 am

Raxacorico wrote:
Wed Jan 12, 2022 5:33 pm
I find that if I set my Zappi 2 to give me four hours on my cheaper overnight tariff, it just works. I've set it up for every day of the week; so whenever I actually plug it in it just works overnight. This is on the Eco++ setting, it does not work like this on other settings. You have to manually work out how much charge you need to give, depending on the final SOC you require. So to answer your question, you can acheive 100%, set on your car, and adjust the number of hours required to acheive that. Then you drive off. There's no need to get the car at 100% that far (12 hours) in advance; and is not good practice when trying to keep a healthy battery.
All this does confuse me! When setting the scheduled charge (in the Zappi iPhone app), it looks as if that schedule can apply to any of the fast, Eco, or Eco+ modes. How do you know which one it applies to? Or are you setting your times on the Zappi itself?
You stressed in your reply that "you can achieve 100% set on your car". Why have you stressed "set on your car"? It implies (to me) that you use the car's timers.
Sorry to be so thick but this ID3 charging malarky doesn't seem very intuitive, unless you are doing a straightforward immediate charge.

sidehaas
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Post by sidehaas » Thu Jan 13, 2022 7:36 am

If nothing else you could simply set the max charge level in the car to 100% (which I think is what Raxicoro meant) but then if you don't want to use the Zappi timers, just plug the car in at the right time beforehand (eg, if you need 40kwh to reach 100% and you have a 7kwh charger, then just under 6 hours before you want to leave). Obviously if this is in the early hours of the morning that might be inconvenient. Alternatively if you aren't driving first thing in the morning, you could set it to 80% (or presumably something like 90% is also better than 100%) overnight, then charge the last bit just before leaving in the morning. The last 10% should take less than an hour to add. If you have to get up and leave quickly early in the morning and you need to sleep much longer than the car needs to charge....well then I would look for an opportunity in advance to test out your Zappi charger timings :)
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mediaguy
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Post by mediaguy » Thu Jan 13, 2022 8:14 am

I agree with that reading. If you leave the ID3 screen on 80% it doesn't matter if you plug it in for 48 hours, the car will not go past 80%. So no matter where you set your schedules, you must set the car to 100%.
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G43FAN
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Post by G43FAN » Thu Jan 13, 2022 8:28 am

As others have said the setting for the maximum charge needs to be set on the cars screen and this is like 'The One ring' (to rule them all).

Once you have set the max SoC in car preferably as even if the app usually works you don't want this to be that occasion it doesn't play ball.

The Zappi scheduled charging works fine (well mine does) so you have a couple of choices. Are you on a cheap overnight tariff? If so you could set a timed charge to run for long enough to get you to 80-90% then you could have another timed charge (boost) for an hour or so before you leave. This would allow you to also use the car preheat with power being supplied.

For the Zappi (on Android anyway) the scheduled section is under Boost settings and so will charge at maximum rate.

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Scratch
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Post by Scratch » Thu Jan 13, 2022 9:48 am

G43FAN wrote:
Thu Jan 13, 2022 8:28 am
As others have said the setting for the maximum charge needs to be set on the cars screen and this is like 'The One ring' (to rule them all).

Once you have set the max SoC in car preferably as even if the app usually works you don't want this to be that occasion it doesn't play ball.

The Zappi scheduled charging works fine (well mine does) so you have a couple of choices. Are you on a cheap overnight tariff? If so you could set a timed charge to run for long enough to get you to 80-90% then you could have another timed charge (boost) for an hour or so before you leave. This would allow you to also use the car preheat with power being supplied.

For the Zappi (on Android anyway) the scheduled section is under Boost settings and so will charge at maximum rate.
It's good to know that your schedules work and I will try it out when things aren't so imminent. Out of interest, looking at your screenshot, if you were to plug your car in say at 09:00, would it start charging immediately, or would it wait for the next scheduled time?

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Raxacorico
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Post by Raxacorico » Thu Jan 13, 2022 10:31 am

sidehaas wrote:
Thu Jan 13, 2022 7:36 am
If nothing else you could simply set the max charge level in the car to 100% (which I think is what Raxicoro meant)
Exactly - sorry for the confusion!
I programme the Zappi itself, as I don't have a smartphone - keep it simple.
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G43FAN
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Post by G43FAN » Thu Jan 13, 2022 10:38 am

Because I have the Zappi set to Eco+ it doesn't charge at any time outside the boost times currently.. (If it was summer and I had Excess Solar it would charge assuming it was under 80%)

The schedules at 3 o'clock were me messing around so I could use the prewarm and get the Zappi to provide the power.. downside is if I use the car during the day and plug it back in it will also charge at 15:00 if it is not at 80%

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