Junctek battery monitor KG160F with very remote display

[Manfredi]

Hi energy mates,

my PV plant and batteries is located in a garage, far away from the home. I decided to install a KG-160F to measure battery current/voltage and SOC, but it does not make sense to have the display in the garage.
So I decided to try a long cable run to connect the measuring box, near the shunt and the batteries, to the display located in the house. The cable lenght is around 53 meters, and ... SURPRISE SURPRISE ...
the display WORKS perfectly!
The main 45m trunk was realized using 30+10+5 ethernet cable of SFTP type, 2 ETH RJ45 couplers, while the first 2m and last 6m is realized with flat 4-wire cable (not shielded) with final RJ9 plug. The RJ45 cable runs for 30m in same bundle with power cables, doubly insulated, there are 7 of them. To spend less in such long run, I used aluminium cables of 16mm2 and 25mm2., so a big bundle has resulted around 5cm diameter. To improve the immunity to lightning and other issues like EMP, an aluminium foil was wrapped around the aerial portion of the bundle.

Honestly I was surprised, things work well at such a long distance, even brightness of display is good, and I left the 80% default value of brightness.

Hope this positive experience could help other that need to place the Junctek display far away from control unit with BT.

Ugo

 

[740GLE]

I’m impressed, here I am thinking I’d be able to extend my JK display a few feet lol.

 

[Manfredi]

Hi, this is the aspect and brightness of the Junctek display after 53 meter of extension cable.

 

[740GLE]

Very nice

 

[thebeavesknees]

This is great to know! Thank you. =)

 

[Rickey]

Very good modification

 

[Rickey]

JUNCTEKT has launched a Coulomb meter with WiFi connectivity, which allows remote monitoring of battery levels after connecting to WiFi

 

[tommix]

There is ESPHome version that can be written to esp32 module [for example WeMos D1 mini] , connected to LINK port and all data will be available in local network. Here is code i put into github https://github.com/Tommixoft/esphome-junctek_kgf
I use this to integrate my JunkTech into homeassistant. You can in ESPHome config file tell to make that device itself has a http server ( by adding

web_server:
port: 80

)
so you can visit device ip address and see data there if you dont have home assistant.
If you want this data to be available from outide - use VPN server in your home network,and vpn client on your phone or computer, it's basic stuff.
If you have static ip you just can make changes in your router to expose device port to outside so you could connect directly to it fron amywhere.
Also basic networking stuff.
So you dont need any NEW versions. Old version always was possible to be wifi, i have it as a wifi for a year now. all you need is cheap 3-5$ esp32, rj9 cable and power to power up ESP32.
This code is great because you cna use monitor and this module at the same time. If you dont have monitor you can use git's nomonitor branch.