Nice ! Plenty storage there.
I noticed on the Seplos site, the bms board I have is type B but no instructions for it. ??
Seplos CAN BUS RS485 48v 200A 8S-16S BMS
- Thread starter Firechief
- Start date
I noticed on the Seplos site, the bms board I have is type B but no instructions for it. ??
Neil H
New Member
Type B is just the board formatNice ! Plenty storage there.
I noticed on the Seplos site, the bms board I have is type B but no instructions for it. ??
Eg rs485, can plus light all on the BMS
You can get rs485,can and lights on a separate single board
Or sr485, can on one board and lights on another
Ps sent you a pm
Neil H
New Member
Great would you mind me using the pictures of your completed bms ?
No problem at all Neil, hopefully it's correct ?
Neil H
New Member
thanks (it is)
degmwilliams
New Member
- Joined
- Dec 30, 2022
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Hi, did you manage to work out how to connect your inverter to the seplos? I'm in the same situation.
BenYeats
New Member
The saga continues. The daughter PCB turned up and as I suspected won't connect to either the inverter or the PC. Furthermore the BMS is not switching on properly so there is not any Voltage across the P+ and P- pins (hence can't switch the invertor on)
Think it is a FW problem again given my comment above. Back to Fogstar again. Getting rather annoyed by this.
Other option is to send the original BMS to Seplos to reflash with the latest FW, will also do this but will then have to wait out Chinese NY etc.
Neil H
New Member
Did you fit the cable between B+ and the battery?
Neil H
New Member
Hello, I have a Seplos 10E which I’ve so far only connected to a Sofar inverter to charge at night and discharge during the day.
I’ve recently added two solar panels and a Victron solar charge controller by introducing two busbars between the battery and the inverter.
The solar production rarely exceeds the demand of the inverter, but when that does happen I expect to see current flowing into the battery. However, when the difference between the solar current and the inverter current is small, the bms current shows 0A. Is there a minimum current that the bms needs to ‘detect’ before it allows the charge or is it simply not showing it even if it’s there?
I’ve recently added two solar panels and a Victron solar charge controller by introducing two busbars between the battery and the inverter.
The solar production rarely exceeds the demand of the inverter, but when that does happen I expect to see current flowing into the battery. However, when the difference between the solar current and the inverter current is small, the bms current shows 0A. Is there a minimum current that the bms needs to ‘detect’ before it allows the charge or is it simply not showing it even if it’s there?
Attachments
houseofancients
Solar Wizard
Minimum is .8 amps , official doc say 1 amp, but that was what my testing showed
So where does the missing current go?
houseofancients
Solar Wizard
Still flows, but too small to be registered by the shunt
Ah ok; it still does detect small currents in the other direction though
Last edited:
Rickster1978
New Member
I’m asking quite a lot of questions at the moment so apologies for that. 
My battery capacity is only showing as 200.00 Ah. Should this not be higher? I thought it would be 280. Also thought the BMS would auto detect this.
Battery has only been charged a couple of times so far so wondered if it takes a few days to adjust the capacity or if it should do it straight away.
It’s the Seplos Mason with BMS 2.0
My battery capacity is only showing as 200.00 Ah. Should this not be higher? I thought it would be 280. Also thought the BMS would auto detect this.
Battery has only been charged a couple of times so far so wondered if it takes a few days to adjust the capacity or if it should do it straight away.
It’s the Seplos Mason with BMS 2.0
houseofancients
Solar Wizard
in order to detect this , you will need to do a full charge , until cutoff, and a full discharge until cutoff.
if you follow the instructions i left you on facebook, you can also set this manually in either the management software ( if you don't click on pack 1 ;-) ) or through the bluetooth software under capacity
Rickster1978
New Member
Thank you 
I’ve managed to change it to 280 using the IPhone app the battery has charged and discharged fully a couple of times so I’m not sure why it didn’t adjust automatically.
The iPhone app was much easier to use and connected via Bluetooth quickly.
I’ve managed to change it to 280 using the IPhone app
the battery has charged and discharged fully a couple of times so I’m not sure why it didn’t adjust automatically.The iPhone app was much easier to use and connected via Bluetooth quickly.
Hello, I recently bought a hybrid tensite inverter, or also from the Aiswei or Solplanet brand. and I also bought batteries with bms seplos, I configure the inverter to read pylontech can bus and the seplos in pylontech, and I am unable to make it work, the inverter when stopped reads the inverter information, percentage, temperature... but when I try to start, there is a communication error, any ideas? I have taken information from the can bus with an analyzer, but I don't know how to interpret it much, I am waiting for Seplos' response. I leave the Logic 2 raw in case anyone wants to look at it
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