Thank you, Sir. The most comprehensive description of building a combiner box I have found. Subbed!

il porta batterie che dimensioni ha ;;;E la distanza fra i due pianni delle batterie qualle e ;;;

Thank you

I have a question, My 2x JK-BMS (JK PB2A16S20P) are configured to let my victron multiplus 2 (3x / 3 phase) load my 2 batterypacks (16x320Ah LiFeP04 Cell) (JK BMSes connected to eachother, then 1 can cable to the Cerbo GX. My Charging (absorption) voltage is about 54,7V with high current for an hour, and then raises to about 56,7V with low current. Thats the wrong way in voltage!?? Cerbo is set to DVCC Mode. My most important BMS settings are: Cell OVP: 3.65 V Vol. Cell RCV: 3.6 V = 57.6 V SOC 100% Volt: 3.55 V = 56.8 V Cell OVPR: 3.54 V Cell UVPR: 3.02 V SOC 0% Volt: 3.0 V = 48 V Cell UVP: 2.8 V Power off vol: 2.65 V Vol. Cell RFV: 3.50 V = 56 V RCV time: 1.0 H RFV time: 6.0 H Someone can help me to get this right? My thougths are first high voltage and amps absoption, then lower voltage and amps for float? What settings in BMS do i have to change?? Many thanks for reading this,

Great video! Does the solar panel maximum fuse rating apply to the wiring past the combiner box? Let's say have 4 panels with 6 amp rating. And a 15 amp max Fuse rating. If I parallel them once before the combiner box it would be 12 amps then at the box it would be 24 Amps on the way to the charger. Can that flow backwards toward the panels?

Hell. What setting should I set my charg controller using lifepo4 3.5V 30A+30A 16S. What amp should I set my charg controller?

Aluminum is metal too not only the steel!

In your parts list I can not find any fuse board . I seen you have your name on your balancing fuse board where can I find the s16 board

The fuses are 32v is this a problem with 52v system

Hey Franky, en hoe 'proper' zijn die dingen qua RF? Want het is niet omdat mijn buren heel het spectrum mogen vervuilen met hun omvormers dat ik er zelf nog een schepje bovenop moet doen.

= I admire your USE of "ferrules" COOP ...

Thank YOU I really LIKE your ANTI-FLOW-BACK Diodes COOP the WiSeNhEiMeR from Richmond, INDIANA - USA ...

Good evening, Thank you for all the videos and all these explanations. I have a problem with the JK BMS connected with a Growatt hybrid inverter and a 16S Lifepo4 battery, the SOC drops from 60% or 50% to 1% in less than a minute. The batteries seem correct to me. How can I solve this problem. Thank you for your feedback. Pascal

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Hey Frankey, thanks for videos.

73s

Agree with you that BMS should be as simple as possible!

"USER PRIVATE DATA" , Is 13 spaces to store your password so you don't forget it.

you helped me understand the combiner box wiring.👍

Nice Video mate. my inverter is only rated for 27 amp input from PV. if connect all 4 strings in parallel in the combiner box I will exceed the rated amp for the inverter is safe to do so? thanks

72v 42ah bms advance setting ideal?

Hi Franky ik ben nu al uw video’s van voor naar achteren aan het bekijken en zelfs dubbel😅 Maar als ik het goed begrijp, tussen uw panelen en Mppt zijn er fuses breakers en nogmaals breakers met spd gemonteerd.. is dit voor een bepaalde reden? Is het niet voldoende om fuses of breaker en spd tussenin Bedankt Marc vanuit de Filipijnen en bijna startens klaar om ermee te starten

Nice Setup, thx for the Informations and go on 🤩

One thing is not clear to me. How you connect MPPT and Multiplus together? If you put Batt connector to Batt from MPPT OK and then BATT connector to Multiplus? How?

Nice set up, very clean!!. I have some fears buying from Ali as not all products are good quality, are you sure it is 99,9% copper? Have you measured the resistance?

I have panels of the same model and specifications. Due to space limitations, I have to mount them in 3 different areas. I want to place the maximum number of panels in each area. In this case 3 different strings will generate electricity at 3 different output voltages. Can I connect these 3 strings to the mppt after making parallel connections in the combiner box? Or in such a necessity, with considering the minimum cost and maximum efficiency, what would be your solution?

Hi Mate, I have a Solis hybrid 5KW inverter, and I'm using it with 16 EVE 304 cells and a JK inverter BMS with an active balancer. I've been running this setup for the past five months. The JK BMS communicates the state of charge (SOC) to the inverter, but the SOC keeps drifting over time. Here's the issue: even when the BMS indicates a 100% SOC, the voltages drift slightly lower with each cycle. Over the weeks, the SOC gradually drifts, so while it shows 100%, each cell and the overall pack voltage are slightly lower than the previous cycle. If I adjust the battery capacity settings, the BMS resets to 70% SOC, and the inverter charges another 3 or 4 kWh. This SOC drift is frustrating because on cloudy days, my 16 kWh battery effectively only charges to 11 or 12 kWh. The remaining 4 kWh stays uncharged because the BMS incorrectly reports 100% SOC to the inverter. To fully charge the battery, I have to keep changing the capacity settings in the BMS back and forth. Is there a way to use this inverter without CAN communication or by setting it as a generic battery? If anyone else has the same issue or knows a solution, please comment and suggest how to fix this problem. Thanks!

The earthing

I have 4 different Android devices and none of them can install the app to access the JK BMS controllers.. Had to use a Windows 11 Pro laptop to program them and bring the 30kw of batteries online.. The controllers themselves seem to do their job and keep the cells in line but the compatibility of the app is very lacking and it is not that big or complex of an app.. I think it has more to do with security and whatever silliness is going on there.. I wish they would just spend the extra 50 cents and install a Wi-Fi chip that has its own local network homepage built in like routers have..

If you only charge to 3.45 why don't you have 18S config? Victron equipment is happy right up to 66V so even a full charge twice a year you would go to 65.7V.

If you run 2x JK newinverter BMS in parallel, and connect it to Deye (or some other inverter with CANbus), does the SOC be reported in the inverter from the Main BMS, is a mix of pack 1 + pack 2?

Im also having trouble pairing regularly. It works maybe 1 out of 10 times.

The JK BMS is still one of the best and getter better. Both the original form factor and the new inverter (closed loop/networked) keep improving. I have four and once I figured out the settings they have been running for close to a few years trouble free. I will say that documentation is only fair. Like anything, there will be some duds but this isn’t too common with these. The most common problem isn’t the bms, it’s an error in installation. And usually if it fails, it just stops unlike some others that can wreak your cells. I highly recommend these

Nice job there! One question: why do you have second SPD on the braker box below MPPT?

What is the fuse internal resistance, the higher the resistance the more it will drop your balance current.

You also can include the smartshunt in the ve.smartnetwork. it tells the the correct battery voltage and current to the charge controllers. so the voltage drop between battery and the charge controllers doesn´t matter.

Heb je de RS450/100 nog overwogen om toe te passen?

You are doing a great job.

knappe installatie Franky

What is password i dont have mannual

The oil lamp comparison is not very good. I use 2 separate battery banks, consisting of 2x16 EVE280Ah, each with it's own JK BMS v3, communicating with each other and with the charger. Let's continue with your example, one bank has problems and the bms is stopping the charge, but at such a large capacity (560Ah) it is not uncommon to charge it, or discharge it even with 200-300Ah. If a bms enters in the protection mode, you would push all that current in the remaining bank, which depending on how it is setup, will either enter also in protection, either will push it hard. Either way, not optimal. With the communication you don't have that issue, as soon as a bms is out, the charger will decrease the charging current. This was just an example, issues can be multiple, a cell or bms temperature, cell voltage etc. PS: just o e more UTP cable between wthen2 bms's and one to your charger. Nothing complicated.

Hey Great tutorial, could you please confirm the peak temp recorded on these DC diods and their Brand?

battery 24v 100ah charger 20 amperes is it normal or is it very strong ampers?

Hola no tengo comunicación entre el jk y el victron ,cargo las baterías con un voltaje bajo ahora en verano hay mucho sol y me guio con el shunt victron para cargar las baterías hasta el 80% o 90% máximo en invierno como hay menos horas de sol cargaré más rápido

You make great videos. Don't stop! With time, you will get a lot of subscribers.

Nice job 👍 i wonder, how should the earthing be done if you are using small pieces of esdec clickfit profile?

Hey Franky, quick question, What would be the settings for a 72v (84v) battery pack built with this. " 26650 Liitokala, model Lii-50A, 5000mAh, 3.7v, max 4.2v, min 2.75v with120 cells I check the xsl file for the BMS parameters and is great to be able to understand what all those settings mean but not sure what should be the parameters to use. great content and well explained! Thanks in advance!!🙏

V.E. BUS PORT.NOT VE DIRCET PLS

For me jk bms shows on all cells 0.06v too high voltage and overall for 8cells shows 0.50v higher total voltage. Crappy device, Dally showed ok, but did not had active baalncer

For me jk bms shows on all cells 0.06v too high voltage and overall for 8cells shows 0.50v higher total voltage. Crappy device