JK-BMS still on top of the game? Follow up video.

Well we've seen some drama since Jikong launched it's new BMS. Is there a problem? Is JK-BMS or Jikong still on top of the game? In the second part of the video I try to answer several questions I received after the first video. Some questions were very obvious for me, but not for every follower.
0:00 start & intro
1:09 History & roadmap Jikong
2:48 Important information
3:10 Start Q&A session
Here's a link to all parts used to built the powerwall:
sites.google.com/view/diy-pow... (adding as we go)
Link to JK BMS V2 I used, the official JK BMS store:
JK-BMS model JK-BxS20S15P : s.click.aliexpress.com/e/_Dls... - amzn.to/3od8Saq
Link to the JK BMS 2" display: s.click.aliexpress.com/e/_DmU...
Pdf to revised settings: drive.google.com/file/d/1Dkdw...
APK file to install Jikong BMS software: drive.google.com/file/d/1gKEc...
Andy his offgridGarage channel: / channel
For recording my YT clips I'm using a DJI pocket: amzn.to/3N7rt26
Disclaimers:
This video is for information purposes only. Be aware building a powerwall is not like making a Bob Ross painting....mistakes can cause large unhappy accidents.
If you have no experience with electrical connections or solar, please contact an experienced technician.

[@Thunderst0rn]

Thanks for the useful info!

[@LordOneHoop]

If you have an installation in a camper or other moving objects you like to have the bms connected to Victron (GX) because of VRM to check your system while you are not there. The V3 inverter bms does the job flawlessly. Another benefit is that it is connectable to a pc so you don't need your smartphone. Imo there is never too much information ;)

[@SkypowerwithKarl]

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

[@easypowerwall]

Great comment, thanks for sharing your experience. Have a nice day. Franky - EASYPOWERWALL

[@GPR_gprhellas]

thank you very much for the data you shared with me regarding especially the settings related to Li-ion cells. Georgios (GREECE)

[@easypowerwall]

The pleasure is all mine. Good luck.

[@cyberdjro]

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.

[@nategunn2830]

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

[@easypowerwall]

Hi Nate, I'm a bit surprised by your message. Never had to pair again after the initial pairing with my cellphone. Just launch the app and it works straight away. Have you tried that? Can you try with other device if you have the same issue, just to make sure it's not linked to your device. Franky, EASYPOWERWALL

[@nategunn2830]

Thanks yeah I tried that. I also have a golf cart with a JK BMS that is acting the same. I'm able to get into both if I retry over and over including restarting the app. Also restarting the BMS helps. I believe it's an app issue or maybe it's just my android phone. 🤷

[@basiceducation1131]

Please please please make a video for pairing error with bms

[@rilosvideos877]

Thanks for the interesting video! Did you check for current/engery consumption of the BMS itself? When Bluetooth is on or off? Can you separately switch BT on/off? I would really concider to switch it off, when you leave the battery pack at rest for a longer period (some months). I heard many stories, that the battery was sucked down to deep discharge with BMS switched on for a longer period.

[@easypowerwall]

I didn't checked this in particularly, but that's a good idea for the next JK-BMS follow up video. Thanks for bringing this to my attention. Have a nice day.

[@mateuszmazur1482]

Thanks for your time and video. About JK and their support. They are tipical Chinese company. Zero response for confirmed issue. About two months, planty of emails, WhatsApp and nothing. Issue is about new Inverter and triggers for relays. So maybe product/price is greater but support is terrible (doesn't exist).

[@easypowerwall]

Hi, I agree communication is not great, they invested time to work on the website and all software and manuals are available. The community made a few FB groups to share information.

[@mflo1970]

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

[@tiborchren]

Would you consider to try and use the JK-JBD-BMS Interface Board ('Peter' Board) in the future?

[@easypowerwall]

Don't think I will start using the Peter board. I'ts all about economics. The boards are pretty pricey and it has an impact on the ROI. Working on alternative solution to access the BMS. Stay tuned, but first I enjoy a 2 week holiday.

[@mflo1970]

Hola he comprado el nuevo, no entiendo tanto drama el bms debe actuar como una placa de protección de las baterias y en este caso tiene balanceador activo ,mejor lo pedi porque al tener 4 sondas de temperatura me parecio mejor en ese sentido ya que las baterias no son baratas

[@irfansensoy5901]

Hello. I would like to ask you a question. I want to make a 16s 48v battery. The cost of 16 280Ah cells is 2690 dollars in my country. However, if I make 16s 48v as 3p16s 48v 100Ahx3, the cost is 2390 dollars. My question is, will connecting 100ah cells in parallel in threes cause any problems? I will use JK bms. total capacity makes 48v 300ah. ((3x100Ah)x 16) = 48 cells

[@easypowerwall]

This will work fine. Just know that the total weight will be higher, you need more busbars, you need more fema tape and it's more work.

[@ricardophelps6323]

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.

[@SayWhaaaaaaaaaaaaaaaaaaaaaaat]

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

[@marcelacostache4891]

Hello I also have an off-grid installation of 5.4 kw panels, in verter Easun SMV 4 of 5.6 kw and a LIFEPO4 battery 16 elements of 280 AH. If you can help me, what are the voltages that must be set on the inverter to charge the battery to 80-90% and discharge to 20-25%. Thank you in advance.

[@easypowerwall]

Hey Marcel, check my latest video about the victron chargers. I discuss the voltages for the 16S config. Have a nice day. Franky

[@mflo1970]

Mucha gente se confunde el que carga y descarga las baterias es el inversor el jk solo esta aquí para monitorear las baterias y cortar la carga o la descarga dentro de unos parametros de seguridad para las baterias ....estoy equivocado???

[@basiceducation1131]

How to pair jk bms with car Android player

[@easypowerwall]

Good idea will make a clip about that, first enjoy a 2 week holiday.

[@jimvan8061]

Dag Franky, Ik vermoed dat je nederlandstalig bent en woonachtig bent in Belgie. Net zoals jij heb ik twee batterijen gebouwd 48v (51.2V) 280Ah met V2 JK bms, nu vraag ik mij af heb jij deze door de keuring gekregen? Ik heb het Arei al meerdere keren doorgenomen en van batterij vind ik niks weer, buiten een stukje over manipulatietoestellen zoals een heftruck en dergelijke. Ben jij met het net verbonden of werk de installatie volledig gescheiden los van het net? Alle info is welkom, alvast bedankt voor de info die je op je kanaal zet. Doe zo verder zou ik zeggen.

[@Jeronimo-eb2rf]

Hi, zelfde situatie. Heb 2 Deye 12k, 3Fase omvormers, 16k panelen en 20k batterij. Gebruik die enkel Offgrid, lever niet terug op net. De kost alles officieel te maken, via officiële installatie en terug te leveren. Is vele malen groter dan zelf te maken. Zou het prijsverschil nooit eruit halen met terug leveren aan net.

[@easypowerwall]

Jim, de installatie is gebouwd volgens regels van de kunst, maar niet gekeurd. Installatie is helemaal off-grid. Voorlopig geen plannen voor ESS. Heb thuis een parallell circuit voor auto, wasmachine, droger en waterbed.