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Retrofitting a JuiceBox

I have an old JuiceBox Classic 40a that just died, I believe its the main control board.


I'd like to retrofit the JuiceBox with the OpenEVSE controller. What parts from the openevse store would I need to do the retrofit? (beyond the controller)  I want to do a simple retrofit for now, until I get to ordering more parts for a second openevse.


One note: my Juicebox is not standard. Its been modified as I didn't want to keep the evse outdoors. 

I've been using it with a tetherless outdoor Type2 outlet. with a Type2-Type1 cable for my i3 and 500e


The plan is to have a 2nd complete openevse set up to use a tetherless outlet as well.


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The minimum hardware required to upgrade the Juicebox electronics would be:


OpenEVSE Controller

GFCI coil

LED display


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With Enel X Way closing their doors, you might just get more interest with this.
I bought a JuiceBox 40 this summer, this might be an interesting project.  Admittedly I have not touched electronics in a while, so any pointers or ideas are definitely welcome.


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Replying to @OpenEVSESupport We could do it a few ways: position the OpenEVSE WiFi LED to use the same light pipe or hole. Use the OpenEVSE RGB LED https://store.openevse.com/collections/all-products/products/copy-of-openevse-rgb-lcd Hack the OpenEVSE RGB LED remove the LED and use the Red Green Blue and 0V lines I like the latter. What would the cost be to take the openevse RGB LCD and add the appropriate surface mount ffc connector as a test run? I had considered a Frankenstein board or just a direct solder replacement for now.

There are now a choice of two direct replacement boards for Juiceboxes.

A very easy and affordable retrofit, see the OpenEVSE parts store (ALL).


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This direct replacement retrofit option is great... Excellent work Chris!!!


I just bought two of the retrofit kits, one for my old juicebox and one for the juicebox that my dad bought last year.  


However, I wish I knew these were being worked on when I ordered the full OpenEVSE kit a couple months ago. Then I could've just waited a bit saved myself several hundred bucks :( 


Does the EVSE retrofit kit allow 48 AMPS draw on a JuiceBox 40 Pro?


The Circuit Breaker is already 60Amps.


We love the 48 Amps charging which we have on another charger and it really does translate to 20% faster charging.


So can we retrofit our JuiceBox 40 Pro with the EVSE to actually supply 48 Amps (or even 50 Amps)?


Thanks



@Ron Y White The retrofit kit will let you set it to 80A maximum, but obviously that is not a good idea. Check the relay specifications and the J1772 cable the cable is likely rated to 40A, so it would need to be replaced to support 48A. The relay may be okay.


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Thanks for the reply.  Will check on it.

I have a Juicebox 40 Pro from ~2013. I haven't seen this version anywhere else. I live just a mile or so from the original eMotorwerks location here in San Carlos and picked this up in person. When I showed up, they had someone assemble it in the back as I waited.


Anyway, it stopped working a while ago (beeping), and when I finally got around to opening it, I saw severe burn marks on the incoming hot wires. See attached photo. I would like to retrofit this, but it's not 100% clear if the retrofit kit for the Juicebox V1 will work. My original controller board has screw terminal blocks instead of connectors. And I'll need a replacement for the contactors (or relay)?? And probably should re-crimp the terminals on the burnt cables? Any idea how this could have happened?


Any advice/guidance would be appreciated.

Wow.. that had to be some bad connections that caused the heating of the conductor.  I had a later model of the Juicebox 40 pro and did a retrofit. However, I only reused the AC cable and charging cable.


This is why I really like the openev charger retrofit monitoring the temperature inside the enclosure as it would pick up overheating from any bad connection, and especially since there can be some high amperage going through the cables (ie: 32amps or so).


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I suggest you look on the discord channel for openEVSE for faster answers. You can find a link under announcements, or just Google discord channel for openEVSe

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Hey Kenneth, 


If it were me, I'd give up on the V1, buy an old black & orange Juicebox Pro 40 on eBay, and retrofit that instead. They can be had for $100-150, sometimes much less. You might even be able to sell your original V1 for a few bucks to offset the cost. 


The alternative is replacing the relay, crimping / soldering ends on everything, hoping you have enough wires, stripping back your J1772 cable to get some more slack and cutting out the burned part, etc. Then, hope that the mount holes line up with the retrofit kit (I think they probably do, but you never know). 


It could be done, but it sounds like the sort of thing that would take me until Spring to finish. 


I can't speak to the burned up cables, but I'd guess that the relay died. Or maybe your J1772 cable shorted, maybe check continuity there. 


It must have been cool to see the original eMotorwerks back in the good ol' days. 


- S - 



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@kenneth


You should be okay with the v0 option.


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