Anybody tried new JK BMS with inverter communication support?

Question on the inverter being used.
Roughly + fast reading from page 1 - 11, I understand JKBMS inverter communication has been tested with Victron (Andy at OffGridGarage) and Growatt (Myself).

Any other brand of inverter I missed?

I believe the PylonTech protocol is also done and that is more generic. More are being implemented and provided by the flash updates.

If it could work with schneider/insight that would be swell, especially with a parallel configuration with adjustable current limits that would account for packs going offline. I believe the latest schneider firmware brings the sccs into the loop, but I don't know if schneider will actually do anything with agglomerated information from a 'master' battery/bms other than just a soc report.

Ryushin said:

I can probably sell the SOK batteries if needed, but I do very much like them and they "just work". But getting to 100kWh is not going to be cheap and since I DYI everything, I can DIY my batteries too. Though, I won't be building code compliant anymore and that is one worry if I ever go to sell the house.

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Keep the SOK's AND build DIY Packs,
If you ever sell the house, leave just the SOK's in the system, take or sell the DIY Packs.
I would never get to my current ESS volume without DIY packs. Love em.

OffGridForGood said:

Keep the SOK's AND build DIY Packs,
If you ever sell the house, leave just the SOK's in the system, take or sell the DIY Packs.
I would never get to my current ESS volume without DIY packs. Love em.

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Good idea about keeping the SOKs for the house and just DIY the other packs and take them with me. I wonder if Dexter would give me the parameters for the PACE BMS to have it communicate with the other SOK batteries. I don't think the PACE BMS would care if the battery pack is larger than 105ah. I wonder if there are PACE BMSs than can handle more than 100A. I'll have to google that.

Though, to be honest, the 105ah is a good size to move around by yourself. Storage densitiy wise, the bigger cells work out to be quite a bit cheaper. Decisions, decicions.

Ryushin said:

Good idea about keep the SOKs for the house and just DIY the other packs and take them with me. I wonder if Dexter would give me the parameters for the PACE BMS to have it communicate with the other SOK batteries. I don't think the PACE BMS would care if the battery pack is larger than 105ah. I wonder if there are PACE BMSs than can handle more than 100A. I'll have to google that.

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As you add packs, each individual one sees lower and lower current (in and out) and you will find you don't need over 100A current carrying capacity per pack.

Ryushin said:

Though, to be honest, the 105ah is a good size to move around by yourself. Storage densitiy wise, the bigger cells work out to be quite a bit cheaper. Decisions, decicions.

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Very true,
if you stick to 100/105Ah cells, then the new DIY packs will be easy to keep in balance with the existing 100Ah packs in a rack set up. However, as you noted, the cost to DIY a pack is lower per kWh using larger cells, and far heavier.

I started with two 100Ah factory built server racks and still use these in the ESS, and added 280 and 304 Ah DIY packs. The DIY packs are about 200lbs (90kg) each but being located in my workshop, I have a forklift to move these, and the rack is on a solid concrete floor slab where the weight is no issue. Also note: a 16s 280Ah pack is physically larger than most standard server rack packs - ie mine are 17.3 x 10 x 26 inches.
To keep the two 100Ah packs in balance with the far higher capacity DIY packs, I parallel up the two packs to a small bus and tie that into the server rack bus just like the larger packs. These stay closer together this way, not perfect though. The 280's and 304's remain in close balance together.

For your set up, you may decide the pack weight, balance with existing 100Ah, form factor all mean 105's work best, even if the cost is a bit more.
Hope to see more as you build out your ESS.

STAY ON TOPIC !
Seplos, Pace, SOK DO NOT BELONG IN HERE - Take it to a New Thread !

Should the rs485 ports for parallel bms be terminated at the start and end of the chain? I don't think andy did that with his trial, but I thought that is how things should be done. I have three, soon to be four bms commissioned so far, but have not tried daisy chaining yet. I've got them on 4.17. Too much work to keep updating with new firmware every couple of days.

I have a EEL box with new JK bms and cells from docan on the way, planned for use in a victron off grid system, with the BMS controlling the charging etc (no separate smart shunt). Following along and will post how it goes (probably end of march by the time it all gets here).

What does "disable pcl module" mean?

Parallel Current Limiter i think

I've watched the Videos from Andy from OffGridGarage, JK "fixed" the bms problem by having it reset to the lowest voltage battery type, thats not really a fix in my opinion. Is there a long term solution planned to solve this?

PyroRider said:

I've watched the Videos from Andy from OffGridGarage, JK "fixed" the bms problem by having it reset to the lowest voltage battery type, thats not really a fix in my opinion. Is there a long term solution planned to solve this?

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They changed it so that the default is the safety and IF it resets to default it will cause no harm.
They also corrected the stored settings error, so it does NOT just reset to default after being off for a while anymore.

I think one of the biggest issues is that the buttons for changing the battery type are way too accessible. Too easy to accidentally swipe one with a fat finger. What if you were to inadvertently do this as you were swiping up to close the app? Very poor design.

Had a rare power outage in Vegas. My solar is grid tie only so I got this wired up to run the office until the power came back up.

Version 2.7.0.22 of the PC software is out.

Also since I had my battery setup, I ran some tests. I had to push 1.5amps through my power supply to get ANY current to show up in the BMS (it was showing .4amps). I email JK and haven't heard anything. This is similar to what Andy had as well. The shunts they install aren't very accurate. I'm a bit worried as I plan to use this in my camper van and there will be a lot of very small loads (DC fans, lights, ect.). I may end up installing a smartshunt anyway for better accuracy

nebulight said:

I may end up installing a smartshunt anyway for better accuracy

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I love my 500A victron smart shunt - It just works, what can else can I say?

Does anyone know if there's a way to manage/control the new inverter JK BMS remotely via the internet? I know Solar Assistant works with the older JKs although it doesn't seem to show individual cell voltages (not a big deal) and I am not sure if SA supports the new JKs as yet. Sent them an email maybe 2 days ago and haven't heard back as yet.

Henderson said:

Does anyone know if there's a way to manage/control the new inverter JK BMS remotely via the internet? I know Solar Assistant works with the older JKs although it doesn't seem to show individual cell voltages (not a big deal) and I am not sure if SA supports the new JKs as yet. Sent them an email maybe 2 days ago and haven't heard back as yet.

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I asked them the same thing, if I can connect to the bms via the PC cable then it should work on SA as well, I gave them access to my instance to test.
But you can more or less control it remotely just fine via home assistant and esphome, just create a new device (needs bluetooth) with this https://github.com/syssi/esphome-jk-bms/blob/main/esp32-ble-example.yaml, change it for your values and that's it.
You can also use a wired version to the esp32 if you wish.