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Seplos CAN BUS RS485 48v 200A 8S-16S BMS

duyvietstar said:
Hello. I have bms 100A - old version. I have problem when charging. If i charge with big current, some cell will rise over 3.5v and previous cell is 3.2v. See the photo ( cell 2 and cell 3) sometimes is cell 5 and cell 6. I test and check by bms jk, then don't have this problem. So please help me.
Click to expand...

Hi

Please check tightening the nuts
 
Sanwizard said:
Could be your top balance drifted, connection resistance changed, or cells are varied grade. A good active balancer may help.
Click to expand...
This is why I , by default add and hookup a neey, since last year..
Haven't needed it yet, but as the cells get older , I might, and taking a whole stack apart is quite a task at 110 kg ( 220 pounds) each.
Better just spend a 100 USD extra and save on the backbreaking well before that, and should it be ever needed
 
Sanwizard said:
Could be your top balance drifted, connection resistance changed, or cells are varied grade. A good active balancer may help.
Click to expand...
After one year using my battery, yesterday I charge 3A into one 90А cell from my battery - there was a bad contact, because the screw was untwisted. Checking out is easy and free.
 
Sanwizard said:
Can you set it to 3.4V to give it more time?
Click to expand...
I could, but it might start to say it's 99.5% charged when it's 3.4V some time in the future.
We really need a cut off current value, and I wonder if this has been introduced in the Seplos BMS v3 software, although it's not clear if this would be available to older BMSs

 
cajocars said:
I could, but it might start to say it's 99.5% charged when it's 3.4V some time in the future.
We really need a cut off current value, and I wonder if this has been introduced in the Seplos BMS v3 software, although it's not clear if this would be available to older BMSs

Click to expand...
The BMS should not control charging. Its for safetyand balancing only in my opinion. Your MPPT or Inverter needs to control your charge parameters.
 
Sanwizard said:
The BMS should not control charging. Its for safetyand balancing only in my opinion. Your MPPT or Inverter needs to control your charge parameters.
Click to expand...
Unfortunately my inverter only works with the parameters the bms communicates, unless I set it to Lead Acid mode
 
Yep. The idea is that users/installers should not understand the charging processes. It should be plug and play. The battery manufacturer is responsible for setting proper parameters and providing a warranty for the product. And to guarantee that installers would be able to mess things up they do not to force them for setting up charging specs.

Unfortunately, we want more than what the BMS can offer with DIY batteries. Because we kind of care more about what is the perfect setup. And hence we have 66 pages regarding a specific BMS brand...

But I totally agree that the user should be able to fine-tune the charging specs. It is a pitty that a lot of inverters do not provide a way to do it (i.e. the SMA Sunny Boy that when configured in Lead Acid mode drifts the calculated SOC pretty seriously away from the actual SOC).
 
Hello everyone. I would like to ask you how to set the Bmb to have a charge that stops at 8o%.

It is connected to a Deye inverter.

16s 48v 280eve
 
munand6 said:
Hello everyone. I would like to ask you how to set the Bmb to have a charge that stops at 8o%.

It is connected to a Deye inverter.

16s 48v 280eve
Click to expand...
Set the inverter to 55V bulk, and 54.4V float. That should keep you around 3.4V per cell.
 
Can someone please post / share a parameters file which allows cells to be charged above 3.4v.

When charging, my charging voltage can get over 3.4v but once charging stops, the actual voltage is below. I have cell overvoltage set to 3.65v and Monomer warnings turned off, but when charging, the highest any cell gets is just over 3.5v

And can anyone confirm the effect of having a wrong SOC Ah setting (the next item after Capacity)
 
Voltage will go over 3.4V only while charging. Then it will settle down to around and below 3.4V. Having a cell at 3.5V while charging means that it is fully charged. No point in going above that.

Having wrong SOC Ah will only lie the inverter about the remaining capacity. I can't think of other problems or benefits.
 
brum said:
Voltage will go over 3.4V only while charging. Then it will settle down to around and below 3.4V. Having a cell at 3.5V while charging means that it is fully charged. No point in going above that.

Having wrong SOC Ah will only lie the inverter about the remaining capacity. I can't think of other problems or benefits.
Click to expand...
So when fully charged, I should set the SOC Ah equal to the Capacity - correct ?
 
championc said:
So when fully charged, I should set the SOC Ah equal to the Capacity - correct ?
Click to expand...
Yup. Or follow the directions, and fully charge and discharge your battery so the BMS can find the exact number based on your cells.
 
championc said:
So when fully charged, I should set the SOC Ah equal to the Capacity - correct ?
Click to expand...
The process should be automatic, not you manually doing anything. The SOC will drift with the time and the BMS will compensate for that drift every time when the cells are fully charged (preferably) or discharged. So make sure that you reach fully charged state (like 3.45+V per cell) on regular bases and you should not care much about the SOC.

And a note here - depending on your BMS settings and version you may never reach 100%. Mine does the SOC re-calibration at 98%.
 
My problem is that the BMS reaches 100% but I cannot get cells much above 3.3x volts. They are 3.4v with some touching 3.5v while charging, but not while resting in standby
 
championc said:
My problem is that the BMS reaches 100% but I cannot get cells much above 3.3x volts. They are 3.4v with some touching 3.5v while charging, but not while resting in standby
Click to expand...
It is normal for the cells to almost immediately settle to a lower voltage once bulk charge turns off. They should settle near your float voltage. If your cells are not balanced, one bad cell could cause the entire pack to never reach 100%. Check your BMS for warnings.
 
Did anybody succeed in connecting a seplos to a voltronic hybrid inverter (Infinisolar 10K, MPP Solar MPI10K, FSP PowerManager, EASUN iGRID TT 10K,... ) via the bms-card/box?
According to seplos support, voltronic inverters are supported.
I can even see pylontech protocol communication on the rs485 bus if I set the ID's to 2 and 3, but so far the bms-box doesn't send anything useful to the inverter.
Here the loggings:

Code: 
~0002464F0000FD9A
~200246000000FDB2
~0002464F0000FD9A
~200246000000FDB2
~0002464F0000FD9A
~200246000000FDB2
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D0D0D0F0D0D0D110D0C0D0C0D0D0D0D0D0E0D0B0D0E0D0C0D0E0D0C0D0C0D0C060BB80BAE0BAA0BB40BD40BC10AAA14E233DD0A6D6001DA4E20000F03E814E8000600000667067EDC7C
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D070D0A0D0C0D090D0A0D0A0D090D0A0D0A0D0A0D0B0D0C0D0E0D0E0D0D0D0B060BA80BA50BA30BAD0BCB0BB312A114DE34380A6D6001DD6D60003D03E814EFFFEA000021772065DC78
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
~200B4642E0020BFD13
~200C4642E0020CFD11
~200D4642E0020DFD0F
~20024692E00202FD2E
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D150D170D140D1A0D120D130D140D140D160D100D160D130D160D130D130D12060BB70BAE0BAA0BB50BD40BC10F1B14ED33F40A6D6001DB4E20000F03E814F3FFFE00000667067EDD04
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D0B0D100D100D0E0D0E0D0F0D0D0D0D0D0F0D0F0D0F0D100D130D130D120D0F060BA90BA50BA30BAD0BCB0BB30F6D14E534510A6D6001DE6D60003D03E814EBFFF0000021772065DCAA
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
~200B4642E0020BFD13
~200C4642E0020CFD11
~200D4642E0020DFD0F
~20024692E00202FD2E
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D140D150D130D190D110D120D130D130D150D100D150D120D150D120D120D11060BB80BAF0BAA0BB50BD50BC10EA014EC340B0A6D6001DB4E20000F03E814F2000300000667067EDD78
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D0B0D0F0D0F0D0D0D0D0D0E0D0D0D0D0D0F0D0E0D0F0D100D120D130D110D0E060BA90BA50BA30BAD0BCB0BB30F6D14E4346A0A6D6001DF6D60003D03E814ECFFE7000021772065DC6F
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
~200B4642E0020BFD13
~200C4642E0020CFD11
~200D4642E0020DFD0F
~20024692E00202FD2E
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D130D140D120D180D110D110D120D120D140D0F0D130D110D140D110D110D10060BB80BAF0BAA0BB50BD50BC10D7214EA34210A6D6001DC4E20000F03E814F0FFF500000667067EDD49
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D0A0D0E0D0F0D0C0D0C0D0D0D0B0D0C0D0D0D0D0D0E0D0E0D110D110D0F0D0D060BA90BA50BA30BAD0BCB0BB30DE114E234810A6D6001E06D60003D03E814E8FFED000021772065DC80
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
~200B4642E0020BFD13
~200C4642E0020CFD11
~200D4642E0020DFD0F
~20024692E00202FD2E
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D110D120D100D150D0F0D0F0D100D100D110D0D0D120D0F0D120D0F0D0F0D0E060BB80BAF0BAA0BB50BD50BC10C9C14E734360A6D6001DD4E20000F03E814EDFFFF00000667067EDCB3
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D090D0C0D0D0D0B0D0B0D0B0D0B0D0A0D0C0D0B0D0B0D0D0D0F0D0F0D0E0D0B060BA90BA50BA30BAD0BCB0BB30D4C14E034960A6D6001E06D60003D03E814E6FFEF000021782065DC6E
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
 
riogrande75 said:
Did anybody succeed in connecting a seplos to a voltronic hybrid inverter (Infinisolar 10K, MPP Solar MPI10K, FSP PowerManager, EASUN iGRID TT 10K,... ) via the bms-card/box?
According to seplos support, voltronic inverters are supported.
I can even see pylontech protocol communication on the rs485 bus if I set the ID's to 2 and 3, but so far the bms-box doesn't send anything useful to the inverter.
Here the loggings:

Code: 
~0002464F0000FD9A
~200246000000FDB2
~0002464F0000FD9A
~200246000000FDB2
~0002464F0000FD9A
~200246000000FDB2
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024663E00202FD30
~200246040000FDAE
~20024661E00202FD32
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D0D0D0F0D0D0D110D0C0D0C0D0D0D0D0D0E0D0B0D0E0D0C0D0E0D0C0D0C0D0C060BB80BAE0BAA0BB40BD40BC10AAA14E233DD0A6D6001DA4E20000F03E814E8000600000667067EDC7C
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D070D0A0D0C0D090D0A0D0A0D090D0A0D0A0D0A0D0B0D0C0D0E0D0E0D0D0D0B060BA80BA50BA30BAD0BCB0BB312A114DE34380A6D6001DD6D60003D03E814EFFFEA000021772065DC78
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
~200B4642E0020BFD13
~200C4642E0020CFD11
~200D4642E0020DFD0F
~20024692E00202FD2E
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D150D170D140D1A0D120D130D140D140D160D100D160D130D160D130D130D12060BB70BAE0BAA0BB50BD40BC10F1B14ED33F40A6D6001DB4E20000F03E814F3FFFE00000667067EDD04
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D0B0D100D100D0E0D0E0D0F0D0D0D0D0D0F0D0F0D0F0D100D130D130D120D0F060BA90BA50BA30BAD0BCB0BB30F6D14E534510A6D6001DE6D60003D03E814EBFFF0000021772065DCAA
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
~200B4642E0020BFD13
~200C4642E0020CFD11
~200D4642E0020DFD0F
~20024692E00202FD2E
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D140D150D130D190D110D120D130D130D150D100D150D120D150D120D120D11060BB80BAF0BAA0BB50BD50BC10EA014EC340B0A6D6001DB4E20000F03E814F2000300000667067EDD78
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D0B0D0F0D0F0D0D0D0D0D0E0D0D0D0D0D0F0D0E0D0F0D100D120D130D110D0E060BA90BA50BA30BAD0BCB0BB30F6D14E4346A0A6D6001DF6D60003D03E814ECFFE7000021772065DC6F
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
~200B4642E0020BFD13
~200C4642E0020CFD11
~200D4642E0020DFD0F
~20024692E00202FD2E
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D130D140D120D180D110D110D120D120D140D0F0D130D110D140D110D110D10060BB80BAF0BAA0BB50BD50BC10D7214EA34210A6D6001DC4E20000F03E814F0FFF500000667067EDD49
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D0A0D0E0D0F0D0C0D0C0D0D0D0B0D0C0D0D0D0D0D0E0D0E0D110D110D0F0D0D060BA90BA50BA30BAD0BCB0BB30DE114E234810A6D6001E06D60003D03E814E8FFED000021772065DC80
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
~200B4642E0020BFD13
~200C4642E0020CFD11
~200D4642E0020DFD0F
~20024692E00202FD2E
~200246040000FDAE
~20024642E00202FD33
~2002460010960002100D110D120D100D150D0F0D0F0D100D100D110D0D0D120D0F0D120D0F0D0F0D0E060BB80BAF0BAA0BB50BD50BC10C9C14E734360A6D6001DD4E20000F03E814EDFFFF00000667067EDCB3
~20034642E00203FD31
~20044642E00204FD2F
~20054642E00205FD2D
~2005460010960005100D090D0C0D0D0D0B0D0B0D0B0D0B0D0A0D0C0D0B0D0B0D0D0D0F0D0F0D0E0D0B060BA90BA50BA30BAD0BCB0BB30D4C14E034960A6D6001E06D60003D03E814E6FFEF000021782065DC6E
~20064642E00206FD2B
~20074642E00207FD29
~20084642E00208FD27
~20094642E00209FD25
~200A4642E0020AFD15
Click to expand...
I have not bothered with comms yet. It works fine without it.
 
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