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When I substitute another identical JKBMS unit it shows fine, just this one. It stopped correctly reporting while we were at sea, on a cruise for 9 days.

JKBMS model JK-B2A24S I am finding the seller 'useasy' on ebay WON'T HELP ME. I bought it from him six months ago, and it has the two broken inputs. He claims to be acting as AGENT for the manufacturer and won't allow me to diagnose dead cell inputs with manuf. Ebay itself blocks direct...

Has anyone here had one of these fail and been able to get replaced or serviced ?

These bms units pull and push up to 2 amps into a supercapacitor. Active balancing. That's their purpose in life. So the mosfets or other switching devices, failed. It's just a shame with the other 22 circuits apparently good, and I only need 17, there isn't a workaround to use the 'still...

Voltages all there. I took a backup jkbms unit I have and it works fine and displays correctly with the existing harnesses. So it's internal to the unit I pulled from service.

I have bought 5 of these JK-B2A24S active balancers over the past 3 years. JKBMS. Rather happy until one just broke itself. It shows me '--' for the cell voltage on cell 1 and cell 2, the rest are all fine. This condition triggers the CELL COUNT IS NOT EQUAL message and so the balancer has...

I have bought 5 of these JK-B2A24S active balancers over the past 3 years. JKBMS. Rather happy until one just broke itself. It shows me '--' for the cell voltage on cell 1 and cell 2, the rest are all fine. This condition triggers the CELL COUNT IS NOT EQUAL message and so the balancer has...

Can anyone here manage to submit a support request at JK BMS site ? www.jkbms.com The hour clock just circles forever.

Can anyone here manage to submit a support request at JK BMS site ? www.jkbms.com The hour clock just circles forever.

Can anyone here manage to submit a support request at JK BMS site ? https://www.jkbms.com/support/ The hour clock just circles forever.

So you are saying it is the intensity of the rain flow that triggers the rust ? Cause the rest of the roof panel is fine. I think others suggested the aluminum oxide present at these locations.

Live in mid-Florida, Zip 33523. If salesman had only told me to paint with protective elastomeric, maybe wouldn't have even occured.

I've done the Ospho in a spray bottle, brush, repeat, brush, and paint with Elastomeric from Rust-oleum. Comes with 10 year warranty from walmart. Too soon to tell if effective. Too bad salesman 11 years ago didn't warn me. If I painted that drip area at the outset, there shouldn't have been...

Maybe someone that reads this can chip in. I put solar panels on metal roof 11 years ago. Where the panel frame drips onto the sloped roof it is rusting like crazy. No rust anywhere but along that drip zone. What is anyone doing about this ? I am told this is Galvalume 5V roofing. The rest of...

Maybe someone that reads this can chip in. I put solar panels on metal roof 11 years ago. Where the panel frame drips onto the sloped roof it is rusting like crazy. No rust anywhere but along that drip zone. What is anyone doing about this ?

Just consider that McMaster has already compromised your p.c. with a cookie. If I don't allow them to do that with my making an account they won't allow me to even shop. You must have an account with them from the past. This corporate mentality deserves to be punished. I don't wish to...

This is the one I used https://www.mcmaster.com/86375K234/ ORDER ORDER HISTORY Log in to view Product Detail

What damn outfit won't even let you view product without a login. Easy way to lose business. Idiots will never learn.

Is it a good take that for a fixed inverter size, one is better with two or three battery strings, rather than just one. Less current in each string of cells. Easier with 3 banks to always stay under 0.5 C in and out.

Today I am looking for a thread that talks about cell expansion and bulging concerns. I presume when the battery is between 50 and 80 % under low current charging conditions that there is no way to deform a cell. Bulging is most likely caused by over-charging or excessive currents. Where is...

You can also use a 'temp gun' to locate a weak/bad connection at a lug. It shows up best under high current charge or discharge times.

btw -- from the photo I wish to comment ... In order to establish the best contact between cells, I only snug up the bolt to the studs with nothing else at that connection. All my BMS connections are a customer supplied and drilled, third, smaller stud of like 10/32, into the mid-part of the...

After looking found out there is new parameters supported. I can add -P JK02 to force the older protocol. They now default to JK04. So ... jkbms -p C8:47:8C:11:11:11 -P JK02 -c getCellData &>"$tmpfile"

Year old ones: Command: getCellData - BLE Cell Data inquiry ------------------------------------------------------------ Parameter Value Unit Header 55aaeb90 Record Type 02...

This is the main part of the python code to extract the parameters from the bms file while True: line = wx_req.stdout.readline() if line == '': break print(line) m = re.match(r'^Voltage Cell0*(\d+)\s+([\d.]+)\s+V\s*$', line) if not m: continue...

Command: getCellData - BLE Cell Data inquiry ------------------------------------------------------------ Parameter Value Unit Header 55aaeb90 Record Type 02 Record Counter...

Probably should have said ... This is a third bank of 280ah batteries. 17 cells total on each. So this will bring me to 42 kw storage. Each bank is separate and on its own JKBMS unit. It's just that I build a new bank each year when $$$ permit.

I hope they aren't mac address hopping as that is a plague on the modern security solutions.

I just bought my 3rd JKBMS. It doesn't want to work with my prior setup. I use BLE to talk to them. It's like they've changed the data structure in the last year. tmpfile=$(mktemp) jkbms -p 3C:A5:51:85:14:FC -c getCellData &>"$tmpfile" mv "$tmpfile" /tmp/jkbms-celldata jkbms -p...

Nothing abnormal, not getting hotter than the last 11 years. In fact it performs 100% the rest of the day. I'll see 4990 watts on a good day. One does not replace this -- one must milk every device to get the best return on investment. I see no danger. I just can't find a relay to use on the...

I am thinking it is the internal transition from a single power module to both of them that triggers the bad condition. i.e. going from below 2500w to above 2500w. This is a 5kw inverter with 2 power stages. Totally repeatable every day. About 9 am display flashing the 514 code and...

Are you using 17 cells or 16 cells ? LiFe ?

I got an Fronius IG5100 running, vintage 2011 install. But everyday after sunup it enters into an error state. It will produce at about 80% normal if I do nothing. If I power cycle the DC breaker it will die, then reconnected it will power up fine for the rest of the day. It complains about a...

Still got the one IG5100 running. But everyday at sunup it enters into an error state. It will produce at about 80% normal. If I power cycle the DC breaker it will die, then power up fine for the rest of the day. It complains about a power stage in the error code. Anybody else get this or...