I did not connected it with solar assistant but i did with home assistant, work pretty well. Connected via Bluetooth.
JuncTek Battery Monitor vs Victron SmartShunt
- Thread starter Horsefly
- Start date
Montypaks
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- Mar 26, 2022
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No I didn't. I got an rs485 comms cable from Junctek and I wired a data usb cable to the other end.
Solar assistant don't have a supplier where I am so that will mean buying direct. Meaning it will be costing about a hundred dollars. I might as well just buy another victron shunt for a little extra. Which is what I've done now.
Just waiting for it to be installed
Montypaks
New Member
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- Mar 26, 2022
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Oh that's nice. Didn't know that will work. I'll ultimately be using home assistant as well. But will be feeding the all the info through SA's plugin which looks pretty robust
Is that what you are looking for ?
I can't mesure the hole cause it's mounted in my box, but those are the screws that were coming with it .
It's 10mm diameter. I used 8mm with a washer cause my lugs were 8mm, reason i got those unused.
Horsefly
Solar Wizard
The terminal posts are both M8.
I bought a longer RS485 cable myself, directly from the JuncTek store: https://www.aliexpress.us/item/3256803801321604.html
Wait a sec, we are talking about those :
They are M10 for me, 10mm BUT as i said, i used M8, they kind float into holes but it makes no differences cause i got washers.
Horsefly
Solar Wizard
My bad. They are M10. I don't have access to the device and went from memory. But now I remember that it is the same as the Victron Smartshunt.
It isn't a standard RJ11 connector, if I recall correctly. I know the connectors on old land-line phone cords (which I think are the standard RJ11) doesn't fit. I tried that, and ended up having to buy the ones from JuncTek.
Yea they are pretty big, i remember when i openend the box .. saying to myself .. "This is overkill" ... well since i'm french i said to me "Ils sont vraiment gros ces boulons" ...
MMM maybe you are right, RJ11 is a 6 lanes connector and we only use 4, it's certainly an RJ9 then... RJ9 use 4 connector and it only got 4 lanes.
Know the Difference- RJ9, RJ11, RJ12, RJ45, RJ48 & Pinout
We have come across several variants of registered jacks. They are usually differentiated with specific numbers after ‘RJ’. This distinction is given
www.etechnophiles.com
Clearly an RJ11 would not fit, i maybe got an old RJ9 and will try
Quattrohead
Solar Wizard
It is an RJ9 connector,
Edit to add I could not use a standard phone cable as it only has the 2 middle wires, you need a 4 wire RJ9 connector/cable.
Last edited:
Quattrohead
Solar Wizard
OK so I am trying to get this project to work in home assistant - https://github.com/tfyoung/esphome-junctek_kgf
However I feel like a complete moron because I have no idea how to get ESPhome working properly.
I can adopt a D1 mini for example but then it seems to get lost when I try to change the name. Then it won't connect again but it is up when I connect to its IP directly.
Then I have no idea how to add the files from this project or which files I need.
I am losing my $hit over this....it should not be this hard in 2022
God I am so frustrated.
However I feel like a complete moron because I have no idea how to get ESPhome working properly.
I can adopt a D1 mini for example but then it seems to get lost when I try to change the name. Then it won't connect again but it is up when I connect to its IP directly.
Then I have no idea how to add the files from this project or which files I need.
I am losing my $hit over this....it should not be this hard in 2022
God I am so frustrated.
This is RJ9 4P connector
ckms800800
New Member
How did you get that working, do you have the code anywhere, or is there something on github I could check out? I'm trying to implement something similar.
I second that request.
I've been trying the bluetooth connection on the linux side with bluetoothctl. I connect, but shortly afterword it disconnects. I was able to query the GATT characteristics, but still didn't get anything. I added BLE passive under HACS in HA, tried looking for devices, nada.
I found https://github.com/tfyoung/esphome-junctek_kgf/tree/usesetjmpfix/components/junctek_kgf using esphome to rs458, have the parts and flashed it, but haven't connected to the junctek yet as I wanted to try the bluetooth.
On their youtube videos, I saw Junctek mentioned passcode BTG010 as a note. When connecting with the app, it usually search and connects directly but I used phone bluetooth to connect manually with the code and it said "an app is needed".
Yes, you need to use the APP when the mobile phone is connected by bluetooth
It is recommended to use their communication protocol for communication
http:// 68.168.132.244/KH/Manual_en_zx.pdf
Steve Fractals
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- Sep 6, 2022
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Mmm, just upgraded the firmware on my KG140F and somehow its now reporting that my battery has 122Ah stored but before the upgrade it was only reading 66Ah. Looks like somehow it has doubled what it thinks is stored. Think I'm going to have to do a complete discharge now just to get the figures back to what they should be.
ckms800800
New Member
I'm starting to work on a Junctek plugin for Olen's solar-monitor and I've made a bit of progress.
Follow the adventure here:
https://github.com/Olen/solar-monitor/issues/29
I'm pretty sure I've found a solution. It spits out data continually in varying byte sizes, with hex values as parameter names, with the value (in decimal) before the parameter. ie: 0xBB1204C00240D883EE where C0 (voltage) = 1204 (12.04v), D8 (watts) = 0240 (2.40 watts). It gets messy because sometimes the value is 1 byte, 2 bytes, or 3 bytes depending on size.
Will report back as I make progress. I plan to have this up and running for May long when I take my trailer out for the first time this season... so I'm giving myself a deadline haha
Hello,
Do you remember the firmware version that has been installed ?
I've seen a new device from Junteks, thge KH140F .. which seems to be the EXACT same device as KG140F BUT with improved software.
Seems they are pushing a new device with same hardware and just an updated software... marketing ..
Old Device : KG140F
New Device : KH140F
Seems they are pushing a new device with same hardware and just an updated software... marketing ..
Old Device : KG140F
scubadoo
Solar Enthusiast
I have been using a Jun(c)tek battery monitor shunt in series with my Victron 500A SmartShunt in our motorhome for a few years.
First the 300A Juntek VAT1300 (June 2019), 400A Junctek KG140F (Nov 2021) and now a 400A Junctek KH140F (April 2023).
All have performed perfectly and agreed within 1% V, A and within 1 or 2% across the the entire SOC range compared to the SmartShunt on my 300A 4 cell Sinopoly battery.
I hate to admit that if I had to choose to run just a single battery monitor it would probably be the latest Junctek over the Victron.
The display is fantastic with all the info I want on a single screen, easy to turn off at night etc. and a near perfect android app.
P.S. I am a Victron convert with a SmartShunt, Battery Protect, FET isolator, solar controller, inverters, battery charger etc.
First the 300A Juntek VAT1300 (June 2019), 400A Junctek KG140F (Nov 2021) and now a 400A Junctek KH140F (April 2023).
All have performed perfectly and agreed within 1% V, A and within 1 or 2% across the the entire SOC range compared to the SmartShunt on my 300A 4 cell Sinopoly battery.
I hate to admit that if I had to choose to run just a single battery monitor it would probably be the latest Junctek over the Victron.
The display is fantastic with all the info I want on a single screen, easy to turn off at night etc. and a near perfect android app.
P.S. I am a Victron convert with a SmartShunt, Battery Protect, FET isolator, solar controller, inverters, battery charger etc.
Why swapping from KG140 to KH140 ... i can see no differences... appart from the apps (android and device)
scubadoo
Solar Enthusiast
The information displayed on the screen is rearranged and more suited for my use.
A few obvious changes. Most would be software related.
Very clear charge/discharge icon.
Removed inaccurate impedance reading taking up space.
Real time clock.
Audio alarm for over/under temperature, SOC, W, V, A etc.
Much easier firmware updating.
Display brightness settings based on time of day and easier display turn on/off.
Stored long term data easier to extract.
My previous monitors have all gone to good homes.
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