Recent content by Zivva

Many assemblers of batteries have a tendency to set charging voltage a bit high on the BMS. I have the same issue with another 15S also set to charge @ 54V / 3.6V per cell. After trying different options, the sweet spot to avoid 1 cell to reach OVP too fast seems to be 53V. That leaves enough...

Dashboard & total. Charts are ok ... Looks like it's only the total of the current day that is funny but it gets updated correctly the following day. Looks like it has been corrected with the last beta released today.

What version of SA are you running ? Got 3 inverters with 3 different versions of SA for each of them (last release, previous beta and last beta) and I just noticed funny solar generation data for the last beta.

Actually it looks like a Pace BMS but display is different as it is written "Lanpwr" on it ... Might be a customized version of a Pace or a copy, then Pace software not compatible. Worth trying asking Lanpwr directly if they can point you in the right direction... https://www.lanpwr.com/

You need to set the battery ID to 1 on the dip switch (ID 1 = 1st switch up, the others down). Then you should be able to use the BMS Tools on rs232 or just get com with your inverter (brand ?) thru CAN or RS485. You can download a more recent version here ...

you can download the 2.03 version here : https://www.gobelpower.com/downloads_ap27.html?cate=4 Admin password is 123456

That console / serial / Cisco cable will probably not work. I tried ... You have the RS485 pin out of your inverter ? If so, the cheapest option is this cable ...

Same here with 3 racks of Narada NPFC80 (80Ah then) reported as 100Ah. SOC reported is right, just capacity wrongly reported as 100Ah instead of 80ish. And Individual cell voltage reported non-sense (> 10v) as soon as highest cell voltage reach anything > 3.6v. Reported the issue to SA like...

Confirm, you can use the Signature Solar / LifePower software (BMS Test) to read BMS data : https://eg4electronics.com/wp-content/uploads/2023/03/BMS_TEST.zip But you can not change BMS settings with this. You need the specific Narada software for this. Narada is using different brands &...

Had an issue with a 200Ah Rosen Powerwall. 1 group of cells loosing capacity : discharge @ 2.7v when other cells still @ 3.2v, charge @ 3.6v when other cells still @ 3.4v. Took a few days to get in touch with Tech Support but after confirming cells are faulty, Rosen is sending a new Powerwall...

Easier if you post your grid, battery & time of use settings ...

Old post, you probably found a way now but just in case as I had the same issue of wires barely fitting on the USB to RS485 terminal block. I found a better option using this 10 USD cable : https://www.amazon.com/EPEVER-CC-USB-RS485-150U-Communication-Cable-Controller/dp/B08X6B9112/ Remove the...

Correct, you can not split RS485 ports then either connect only the inverter or only the batteries to the PI ... Unless your batteries & inverter communicate thru a distinct CAN port instead of RS485 or deactivate com between inverter & batteries but connect both to the PI via RS485. You'll...

It all depends of your load ... if load < solar production, inverter supplies the load & charges the batteries at the same time if load > solar production, inverter + batteries supply the load. + grid if load > solar + batteries capacity

Deactivate grid charge @ time 2. If you want to charge the batteries only during cheaper rates (23-7) & be sure to discharge them during grid peak rates (17-19), you could do something like this : 1. 23h, SOC 100% grid charge 2. 7h, SOC 50% 3. 10h, SOC 100% 4. 14h, SOC 70% 5. 17h, SOC 20% 6...