CCSA10

Some additional info. My heat pump tumble dryer uses about 200 Watts only! It was expensive to buy but rather liberating. It runs of the solar system comfortably, hardly noticed. With the inverter washing machine and this tumble dryer, it is very possible to do a emergency load of washing at night. I use inverter aircons for heat. My 24000 BTU runs at about 1.8KW while generating heat. All other heaters have been disposed off. From the sales pitch, i had visions of installing pre-paid (still going to do this) and turning it off. Then build up a credit and switch it on on the rainy days only. This is valid for summer, but not winter. I also have a backup generator (8.5 KVA controlled by the inverter), but this is an expensive way to charge batteries. This has not been working well due to the miscommunication between the inverter and batteries. This should be solved by my new battery installation, but it is still a last resort, the 2nd level failover. I must say, the inverter handles the gennie very well. It starts it but only gradually adds the load after letting it run for 2 minutes or so. It also only starts the gennie if there is no grid power, quite clever! Has anyone tried a wind turbine as an addition to solar? My logic says it may generate something at night and when it is raining...... I see some 4KW ones going for under R30K

I wish you all good luck. My Narada Red batteries have different ports 2 x RS-485 and 1 x LAN, no serial, and apparently uses a different baud rate to the white batteries, 9600 baud vs 14400 baud, I have been told. Then again, during this journey I have been told a lot of things! From my understanding the battery type sets the baud rate for the communication, so I am poked. I have managed to arrange a credit for my 3 x 7.2KWh Naradas, getting them replaced by 4 x 5.1 Shoto batteries on Wednesday, ones that work on CAN bus. All the best and thanks so much for all the conversations and tips. It kept me busy for a while and I had a lot of fun in the process. For anyone that maybe interested, I have 1 of each of the suggested cable configs lying around now What bothers me the most is that so called experts, supply combinations of equipment that do not work correctly. That is 1 aspect. The next is the configs of the "off the grid" systems. I have a 8KWh Deye, 24 x 455 Watt panels (the max that the 8KW Deye can take), and 22KWh of battery, and i cannot run a heater in winter. Also interesting, in summer I could generate 73KWh on a sunny day, at the moment that number has dropped to 34Kwh, so even if i added more batteries, i could not charge them in winter to cater for the longest nights.... and my house is optimised, LED globes, gas stove, inverter fridges, washing machine, heat pump tumble dryer. During the day my house idles at about 135 watts and at night when we go to bed about 350 watts (lots of LED lights around the house). Then of course using appliances and running the pool pump and stuff goes on top. My household uses 800 KWh per month in total for everything. This has been a most interesting exercise, and my personal perception of what it means to be "off the grid" has changed completely. I have learnt a lot!!! All the best

This is very interesting, and clearly it is working. RS485 is a version of RS232, serial communication that can handle longer distances. It only has Tx and RX lines. My logic then says to me that the standard network cables with pin through communication will then not work, connecting 2 receiving pins to each other. Logic tells me a "twisted pair" cable would be needed, like in the old days when we connected printers on serial ports. Would be interesting to try cables with 6 to 7 and 7 to 6 to 7 in order to connect Tx to Rx. ..... this would be for comms amongst the batteries....

This is very interesting, and clearly it is working. RS485 is a version of RS232, serial communication that can handle longer distances. It only has Tx and RX lines. My logic then says to me that the standard network cables with pin through communication will then not work, connecting 2 receiving pins to each other. Logic tells me a "twisted pair" cable would be needed, like in the old days when we connected printers on serial ports. Would be interesting to try cables with 6 to 7 and 7 to 6 to 7 in order to connect Tx to Rx.

Did it work?

Some of the experts said that with my Narada Red batteries, the baud rate for Rs485 is 9600,but with the white Naradas it is 14400, and this apparently matches type 16. Maybe there is hope for the non-red ones. Apparently the battery type on the Deye is a baud rate setting more than anything else..... Good luck. I hope it works out

Maybe I should add that "not fit for purpose" and other threatening words may have been part of the conversation. I am paying in R10K, but to have a working system for the next 17 years sounded like a bargain to me.... And maybe this way I get the 17 years of use that I was hoping for in the 1st place.

I had my suppliers come try. They phoned 4 different experts and decided to credit my Narada batteries because "it will never work" so next weekend I am having my 3 x 7.2 Narada batteries replaced by 4 x Shoto 5.1. As long as it works.....

Man did not come.... - I then travelled for a week. I am currently speaking to Dartcom integration team..... will keep you posted.

Good afternoon, Quick update. I have a man coming around tomorrow to update the BMS firmware on my batteries and have a look. Apparently the firmware on my batteries are 9 versions old. (I can see that because my batteries have the display option) Will let you know what happens, possibly tomorrow evening or Friday..... I hope it will be good news.

Update. I had both cables discussed here made up and tried them both with my 8KW. No luck :(. I did have a mishap last weekend where my batteries went down to Zero SOC. On the Narada red batteries I have, there is a display. I then sat and recorded the % SOC and the voltage at every 10% change in SOC according to the batteries and discovered that the voltages specified in the manuals appears to be very different to reality. Previously I set the Deye inverter Battery settings to Shutdown at 42V and Low battery at 44V as this was quite close to what I saw in the manuals I read. When my batteries went to 0% SOC, the moment that batteries started charging the panel on the batteries indicated 49.3V, so Zero SOC would be around 48.7 Volts, and not 44 as I though. I also compared and recorded the voltage on the inverter vs the voltage on the batteries. This was pretty close. Another interesting aspect, throughout the charging cycle, the voltage difference at a specific % is 0.6V higher when charging compared to discharging. I chose to use the discharging voltage for settings, as I assumed that this would be what would trigger actions. This is the list of voltages I recorded and use now for my settings. So batteries 0% is around 48.7 volts, and batteries full is 52.5, that is 3.2 volts difference, and then the 0.6V variance depending on charging or not changes the voltage by 19% This is the table I now use to estimate levels when i do my settings, specifically on the time of use function. I use the Inverter reading for items that must happen while charging and the "settings on Deye) calculated values when i describe a low threshold. Batteries Charging Inverter Reading Setting on Deye 10% 49.30 20% 50.06 50.4 49.8 30% 50.33 50.6 50.0 40% 50.35 60.5 59.9 50% 50.50 50.8 50.2 60% 50.77 51.1 50.5 70% 50.86 51.2 50.6 80% 50.98 51.3 50.7 90% 51.30 51.6 51.0 100% 52.50 52.5 51.9 I also changed Battery settings on the inverter to: Shutdown 48V Batt low 49V I suspect this may change, i am monitoring this closely during use. I also learnt that changing these parameters does not automatically update the Time of Use settings. Over the raining weekend I had my batteries drop to 18%, and then realised that my minimum voltage was still set to 42.5V. I have now shifted this to 49V. Will see where it goes now. I really enjoy being able to see my SOC and i suspect these values are used to calculate the SOC % from volts, so I am carefull to change them. I do not want to break someting that is working. I am working slowly with these, as one of the benefits the panic brought is that the SOC on my Solarman app is now within 2% of what is indicated on the batteries themselves and this is amazing. Prior to this exercise, the app would say 93% and on the batteries I often found them to be 28 or 18%. Now for the 1st time I have some realistic indication. I really enjoy being able to see my SOC and i suspect these battery settings values are used by the app to calculate the SOC % from volts, so I am careful to change them. I do not want to break something that is working. This was my main reason for wanting BMS. I am going to give the BMS story one more shot, I am going to have a cable made up with pin 2 and 3 connected both sides but crossover, old RS232 type of cable, just for the hell of it and will let you know what happens. If anyone has success with the BMS thing, please let me know! This has been an interesting and very time consuming exercise, but it does feel like progress Have an awesome day!

Did you get the update from Deye? And is it working? If so, what is the firmware version. I emailed them in China and within 30 min they transmitted and update to me, but that is about a month ago. They also told me any CAT5 cable will work... I have kind off given up, I was thinking that maybe their instructions is for the normal Narada, not the Narada RED that we have here. I would still love this to work.

I am trying the same with a Deye 8KW inverter and Narada NFPC150 batteries. Deye support upgraded my Firmware wihtin 5 minutes of sending the email (no warning) and sent me a list of supported batteries. Narada Batteries.pdfNarada Batteries.pdf According this this document the following are supported using RD485 48NPFC80/48NPFC100/48NPFC150/48NPFC200 I have 3x Narada RED 48NFPC150 batteries though, and they do not have a RS232 port, only 2x RS485 and LAN. If i read the manuals of the normal colour batteries, there seems to be 1 x RS232 and 2 x RS485. It also seems that at least one battery must have the address set to 0000 to enable the RS232 and this seems to be for BMS communication to the inverter. I do not have that port. It appears that the RS485 ports are for connecting multiple batteries together for the internal BMS to work. I used CAT5e RJ45 cables, apparently is has the pins connected that RD485 use. I also read that you should have a cable pugged in at the last battery to terminate the story. Tried that too..... But with the RED versions of the batteries, I seem to be out of luck.

I cannot really see clearly, but it looks like your dip switches are not correct. the "master" must be set to 0000 and the "slave" to 1000. Then you use the cable that came with to connect the 2 batteries to each other using the RS485 ports. I have 3 x Narada Batteries and they work well together. Load Balancing and all that. Another thing, I would take positive off the one battery and negative off the other. Then of course also connect them in parallel.

Hi I have a Deye 8Kw with 2 x Narada 48NFPC150 batteries, getting a 3rd one one Monday. My installer set my inverter up to use voltage to monitor the batteries, but this is not working! This morning the Solarman app said I had 48% left, and I went and had a look on the batteries and they were both 15%! I am desperately looking for either proper settings or a way to get this lot to tlak to each other