flyfisherman

Yeah I was also led to believe via many channels its 5 years and after registration its 10. But My letter I got after registering with the same link you posted, clearly states my warrantee is increased from 4 years to 5 years : the product warranty period can be extended from four to five years ... I find this very weird and somewhat worrying. Contacted Solar Advice (the seller) but no reply yet.

Hmmm, I may have to contact them as well as solar advice and see what's going on then, as I found it weird, Dyness say on website 10 years, but I got 5, upgraded from 4. I see MANY websites selling Dyness, including Solar Advice, only state "5 year local warranty" or "5 year warrantee"...weird I have a feeling these battery warranties are not worth the certificate paper they are written on...

Are you sure about this? The below I got directly from Dyness after registration: You obtain Dyness's official approval, the product warranty period can be extended from four to five years. From the sales date as marked in the Seller’s invoice to the End User (“Invoice Date”).

Hi, I registered my installation with Dyness with all the required pictures /serial number etc. Seems like the standard warranty is 4 years, and upped to only 5 years after registering...not the 10 years so many people claim??? Anyone else notice this? Below from the registration certificate/letter: You obtain Dyness's official approval, the product warranty period can be extended from four to five years. From the sales date as marked in the Seller’s invoice to the End User (“Invoice Date”).

Ah ok, thanks. So how do people use SA to get detailed battery info with Deye/Dyness combo? Does the inverter not HAVE to have the BMS info from the battery? Or do you simply connect the input port from the can/rs485 from the master Dyness to SA/pi and then connect the output from the master dyness battery can/rs485 to the slave battery and then have the inverter behave like a "dumb" inverter and not have any battery BMS info to the inverter as there will be no comms cable between the inverter and batteries, only the thick batery cables? How would the inverter get charge % info etc etc then?

Hi, Sorry to revive an old thread, but I want to setup SA on my deye/dyness as well and I have a similar question. My batteries are connected to my inverter as per below image, so what port do I use for the dyness-pi connection? I ask, because the message below from SA seems like you cannot have your inverter and SA both read a dyness battery BMS??? With all the battery models below, if an inverter is already reading them via CAN then SolarAssistant can not read them via RS485 at the same time. Set SolarAssistant to "Use inverter values". If an inverter is already reading the Dyness battery, then SolarAssistant can not read the battery at the same time. The battery unfortunetely doesn't support being read from multiple devices at the same time. Set SolarAssistant to "Use inverter values". I basically want to setup SA on the deye/dyness so I can have detailed BMS readings for both batteries but from what I read on the SA website, this is not possible as my inverter is already using the can/rs485 port?? Or do I use the "out" port on the second battery to connect to SA? A little confused as it seems like contradicting info above vs whats on SA website?

Hi, thanks for the reply. Would be interesting to see what Solar Advice say about the BMS values, if it should see both or if this 50A discharge just some bug/limitation.

Stupid question, but I try and change that value in the image below from 70A to 100A, but it does nothing when I click on that white box...how do I change that value? (Feeling really stupid now)

Hmmm, the comms cables are connected as per post above...they seem correct as per user manual (done by the installer). This is why I started this post, as I want ot make sure the inveretr is "seeing" both batteries, but I am not sure how to tell if it is?

Hi, Thanks for the feedback. Yeap, batteries connected via comms cables, as per attached. So I guess it's all sorted then. Next steps get solar assistant / some wireless monitoring etc set up

Hi, 1x Deye 5KW with 2x Dyness 5kw batteries...(200Ah / 10kw total) As I am getting used to the system interface of the Deye inverter, I am doing general system checks to verify the setup/make sure everything is working as it should. One or two things are not really matching what the Deye manual states. In my battery settings, I have the following (I am happy with 0.2C charge and 0.35C discharge setting): (I have since de-activated the "activate battery" toggle") Lithium Mode: When I click on the battery picture on the inverter, I see the BMS settings. This is displayed in the image below: (busy charging from grid, just after load shedding...so I assume its correct as 40A of 200Ah is 0.2C... so 0.2 of 10KW is 2000W, and this is the rate it is charging at as Power is -2024W?) (or said otherwise 37,24x54=2024W ... 37.24A is about 0.2C) I then click on the Li-BMS button and get this image below, and this is where my questions start... So, questions relating to the screen above: 1) In the Batt Settings I have max charge as 40A, and this is showing here as 40A. But my max discharge in Batt Settings is 70A, and here it shows 50A? Why is this? These 40A/50A values in the image above, is this relating to my total bank of 2 batteries? 2) It says battery current 19A - so to me it seems as if this is the BMS values for only one of my two batteries? 3) how can I see my individual battery settings and temperatures etc for each of my two batteries? It almost appears as if my BMS inverter screen is only relating/showing values from one battery? or what am I missing here?? Where can I see the total size of my bank, to make sure the inverter "sees" both correctly? 4) I can't see or get to any other BMS settings or values through the inverter screen, yet on the Deye manual it states there should be a screen as below?? I cannot see this screen?? Many many thanks once again for any feedback, I really appreciate it.

Hi, Thanks to feedback and input from persons on this forum I have my inverter/battery setup running well now after the installer had a few weird settings. (5KW deye with 2x 5kw dyness) I have done way too much reading online about this matter and am once again looking for input on here from more experienced folk. Everywhere I read, is all the same about prolonging your lithium battery life... main factors being temperature, charge and discharge at a low C rate, don't discharge too much and also don't charge too much (lots say don't go to 100%) So, my question - whilst I am waiting for my panels, is it better to charge the battery to say 80-85% max and then for 4,5 hours loadshedding discharge it to 50% and then recharge again to 80-85% (via Time Of Use in work mode) OR charge to 100% and discharge to 70% during loadshedding then charge to 100% again (un-ticking time of use option in work mode, so basically UPS mode) Or is it really horses for courses as when my solar comes, the solar will keep batteries at 100% anyway during the day if it's not load shedding? Thanks again

My total electricity bill is around R800-R1000 per month prepaid - use one of those funny plug-into-the-socket type chargers to charge with electricity directly from eskom - no pre-paid meter or anything at my house... This is including my pool pump running 3 hrs in AM and 3 hrs in PM as well as a geyser running not on a timer. The rest of the time the house is idling as everything is energy saver ++ kinda ratings. I don't mind buying power from the grid at all, but I think according to my rudimentary calculations 8x 455W panels, 2x 5kwh batteries and a 5kw inverter should take me pretty close to off grid, at least in the daytime, but maybe not all the way. I am OK with this and might even prefer to buy power from grid at night in favor of cycling batteries, and only use battery at night during load shedding, although my house uses hardly anything at night so might as well run it off batteries at night too? I think I have settled on 8x panels in series into 1 MPPT...this is called 8S in solar terms i think? I do have one more question I did some calculations based on zero-degree Celsius days in Riebeek Kasteel (little dorpie in western cape)...then the Voc can apparently be like 54,55V per panel based on stc? So, am I correct in saying 8x55=440V worst case is ok as it's under the inverter 500V limit and when operating even in cold then the Vmpx8 will be like roughly 8x46=368 so that is all still perfect and does not overload the inverter or MPPT even in icy cold days? Warm days is not a problem it wont blow up anything as voltage drops Thanks again for all the input - completely wasted 2 days at work reading about solar and inverters and doing some calculations and hardly did any work 🤣 And I have not even connected the app or remote monitoring yet ... I dread that day as I can see how it can become rather addictive

Hi, On a budget regarding solar panels. I have 8 panels and need to decide what is best regarding wiring? 1 string of 8 panels in series or 2 strings of 4 panels each in series? (I think my use of the term string is correct? hahaha) I did go through this link, and was very useful: Solar Panel Array: How to Size An Array - Solar Advice Deye 5kw inverter. Canadian solar 455W panels. I am a very low electricity user. My understanding is that 2 strings of 4 panels each in series provides redundancy, but is not optimal to maximize the panel output as 4xVoC of panels is 4x49=196 is at the bottom end of MPPT range, but should still work as the startup voltage of the inverter is like 150V for PV input? Whereas 1x 8 panel string in series has zero redundancy but maximizes the panel efficiency as 8xVoC of panels is 8x49=392 is at top end of MPPT range, and this is apparently what you want to aim for? So I guess my questions: 1. what would be the "best bet" ? redundancy or max power? 2. would 2x strings of 4 panels each be too inefficient or too low voltage? 3. can I string 8x 455W panels in series and use only one of the MPPT string inputs in the Deye 5KW inverter? 4. On a Deye 5kw inverter, it says 6500W max pv input...is this for the MPPT in total? Or does this mean max per string is 6500/2 = 3250W per string input if each MPPT has 1+1 string inputs per MPPT tracker?? (So effectively 7 panels max in series per string possible?) Thanks for any input/advice.

Thans again to everyone for their valuable advice over the last couple of days on the two threads I posted. I know exponentially more about the system I have installed now from your feedback and other threads on here. Much appreciated. Realy. Just makes me wonder why installers, who are highly recommended etc. and have all the certifications etc do things in certain ways and not according to manufacturer spec. This particular installer, when asked about why the batteries don't charge to 100%, said "ah these Dyness sometimes go to 90% and sometimes to 80%, its just the way they are made" .... something we have determined is clearly not the case, but rather was the settings on the inverter. Anyways, thanks again for all the advice and input. I think just to be safe, I will get them to come re-wire as per Dyness manual/spec, just to hopefully cover my own arse should there be a warrantee claim one day because Dyness seem to require pictures of the wiring for warrantee registration.