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 Post subject: Re: Delayed/Scheduled charging enhancement (software only?)
PostPosted: Tue Apr 03, 2018 12:03 am 
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Joined: Thu Jan 17, 2013 11:13 pm
Posts: 1650
Location: Los Altos, CA
AgingHippie wrote:
TonyWilliams wrote:
If you want to reduce charge rate:

1) Use the appropriate interchangeable plug with JESLA or JESLA JR for 12, 16, 24, 32 or 40 amps

2) Use the J-Wall at all the same above settings with a simple rotary switch

3) Use Go-Cable at 16 amps

4) Use the original blue handled charge cable at 120 / 12 amps


I was sort of hoping for a way to do it automatically, let the car or charger figure it out. I've got a Juicenet 40 Pro, and it's set to stay off until 10 PM, so I avoid peak rates. But since I know the car can charge from a 32A charger or a 24A charger, I thought there might be some way to make it do that. From what I'm hearing, it wouldn't meaningfully extend the battery life anyway. I just have to hope I'm one of the lucky ones.

If you have a JuiceBox Pro, then you should have the same current settings in the app that I do with the JuicePlug. Have you tried it?

This is the settings screen where you set the maximum current.

Image

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2012 Shoreline Blue #1462 w/JdeMO | 4.32kW Motech/Enphase PV Solar + 2x Powerwall 2 AC| Leviton EVB40 40A & Jesla Home Charging | 2015 Limestone Gray e-Golf LE


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 Post subject: Re: Delayed/Scheduled charging enhancement (software only?)
PostPosted: Tue Apr 03, 2018 1:16 am 
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Joined: Mon Oct 02, 2017 8:56 am
Posts: 16
I can manually limit the EVSE output, but I don't have that "Efficiency" setting you have, don't know what it does. When something says "smart" charging, I kind of expect that it will say ok I have 240v and I have 4 1/2 hours to add 27 miles of range, so that means I need to set my own amperage at X to finish charging. But if it doesn't make any difference in battery life, then it's not worth worrying about.


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 Post subject: Re: Delayed/Scheduled charging enhancement (software only?)
PostPosted: Tue Apr 03, 2018 5:45 am 
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Joined: Thu Jan 17, 2013 11:13 pm
Posts: 1650
Location: Los Altos, CA
AgingHippie wrote:
I can manually limit the EVSE output, but I don't have that "Efficiency" setting you have, don't know what it does. When something says "smart" charging, I kind of expect that it will say ok I have 240v and I have 4 1/2 hours to add 27 miles of range, so that means I need to set my own amperage at X to finish charging. But if it doesn't make any difference in battery life, then it's not worth worrying about.

Only a car can do that. The EVSE doesn't know how much energy is required to fill the car or even what the desired level is. Also, in the case of cars with Tesla battery packs, the efficiency will be lower (more power from the wall for the same energy into the battery pack) if you charge a lot slower since the cooling loops for the battery and charger require power whenever they are actively charging. Those overhead losses add up to a higher percentage of the total when you charge slowly.

_________________
2012 Shoreline Blue #1462 w/JdeMO | 4.32kW Motech/Enphase PV Solar + 2x Powerwall 2 AC| Leviton EVB40 40A & Jesla Home Charging | 2015 Limestone Gray e-Golf LE


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