TheRidDlerX

Hi there. Apologies for not updating yet. This has been taken. Awaiting final word from the buyer before marking as closed.

Price Drop R8,000

Bump. 9,000 Thanks to @heine for the below link. Adjusted accordingly. Also willing to consider a trade for a secondhand Pylontech US3000C that doesn't have too many cycles. https://thebluestore.co.za/product/victron-energy-multiplus-ii-48500070-50-230v-gh/

Thanks for the info. Always open to negotiating

Item: Victron Multiplus-II 48V/5000/70 Inverter [Jul 21'] Age: 4y Price: R10,500 (neg) Payment Method Accepted: EFT Warranty: Not sure, but i bought it in Aug 21' and they have a 5y warranty so... 11 months Warranty Holder: Probly the solar installer or Victron, not sure how that works. Packaging: Unfortunately I did not keep the original box no Condition: Excellent Location: Randburg Reason: Upgraded Shipping: I would prefer not, its heavy Collection: Sure thing, within reasonable hours Link : https://www.sunstore.co.za/products/victron-multiplus-ii-48-5000-70-50-inverter ---------------------- Inverter still works perfect, no scratches - been running non stop for 4y (never over temp) but had to recently upgrade. I'll throw in some of the DB boxes and cabling that came out of the previous install. Images

Just to be clear ... you stated sold off forum, does that still apply? if so was it the Cerbo that went and the Multiplus price is back up to 11k?

Thanks for the input. Yea I'm fearing the worst myself, but that said I've been doing 0.1V increments per day for the past month @ 1A charge and it seems to have significantly lowered the spread. Everything is within 20mV now at each voltage set point. The real test will be the full discharge from the 52.8V mark. The SoC resets is my main concern now - as stated originally i thought i was pulling a log of resets, but it actually issued it, so I immediately did it on all 4 just to have a common reference point. Things are much more aligned now, yet still a bit out of place. For example at the 51.4V mark its thinking its at 97%. Considering another reset when stable temps and spread at the required 100% mark then discharge and recharge from there to train as it may

Morning to all. Two queries please : 1. Has anyone running a Multiplus on 'Keep Batteries Charged' noticed its incorporating some kind of schedule. Busy balancing my bank at the moment due to some imbalances and it only starts the charge at around 6am in the morning and around 6pm in the evening everything goes to idle way below the charge voltage set. Ok fine, I guess the BMS prompted the voltage difference but why does charging stop? I'm trying to 'recondition' an older cell to catch up to the rest at the 49V mark. So far been able to reduce the spread from 100mV to 30 which im thankful for but everything going to idle at or around the same time each day is strange. 2. As its my first time being able to play with Batteryview since i got my own cable i was trying to do some history log dumps from the History Data Window tab. Since I was in the history tab and clicking SoC reset asks you where to save the file I went ahead and did that and to my dismay I see it actually pushed a reset command through to the batteries as well. This is somewhat concerning as I really hope I did not just void any type of warranty with this action by potentially wiping any history it had? What exactly does the SoC reset do? Thanks

This topic has been quite eye opening. I've only recently been able to establish comms to the batteries - did not have a cable in the past and so far I've learnt over 20 new things i did not know about just by looking at BV all day. Most of all i noticed one of the batteries i bought last year showing this type of behavior that was mentioned with the extreme cell differences, early alarms and super high temps when balancing. At first i thought this is most likely my own doing since i had no idea about balancing until a month or so ago and i've been running that poor sod like that for a year. that said, only now adding my most recent secondhand one is it apparent that it could perhaps be something else at play here rather than my mistaken non balancing. it should have done it by itself with ample time over the course of the past year. I've still to figure out exactly how to get the putty information you all are posting but i'm wondering if this could not also be one of those with a busted cell in the first place

Sorry for digging this one up from the grave. Came across it by pure coincidence and started reading. I had 2 x US3000C and installed a third myself, but never knew about balancing the batteries until today! At the time I just put it in and hooked it up - which was the instructions from the supplier. Is it in any way damaging? Been running for over a year now. Went and checked now and my 2 OG ones are on 5 dots and the new one on 6 when SoC is around 88%, so definitely off kilter. Thinking to switch off everything tomorrow and balance them. Can one still do that or is it too late? Then as for firmware does it require special software or just a laptop and setting some IPs? I'll go google that tonight. Thanks!

Hi there. Is this still available?

I've got a Victron system with a sizable MPPT 250/70 and 6 panels installed. In the DC distribution box there's 2 surge arresters and then a DP 1000V/32A fuseholder that was running a pair of 1000V/32A fuses. A few months back one of the DC fuses popped. Our installer told me it was most likely due to the overcast day we had and that can make the panel voltage spike at times. After some driving around and getting spare fuses replaced the one that was popped and was fine from there. Last week however it happened again and it was quite evident there is massive charring from some sparking inside the fuseholders. Did'nt have spare fuseholders at the time (some shortage currently) but put another fuse in and it held all up until today when it blew again and the smell was quite evident. Found some spare fuseholders that someone was hiding that are 1000V/30A holders. I only have 32A fuses left. Should it be a problem? Does anyone know perhaps why this is happening? It feels to me like there might be more to it but my installer is quite awesome with support and ensures me its either i didnt put the fuses back properly or a panel voltage spike, but something about it feels a bit off like there might be more to it - why would the fuseholders be charred to hell and back (unless it was me not putting it back all the way?) Thanks

Just wanted to add my 2c on the installation of US3000C's. I bought an extra one last year and it arrived a week before the the earliest time someone was available to install it. Turns out after some quick consultation with my supplier at the time it was a 10min job and ended up doing it myself off a Youtube video. If need be I can find it, think i have it bookmarked for the future. Been running great. Actually have a few questions on future expansion but ill put those in another separate post.

I actually contacted Dualsun in France to ask about this. Below their response They also then followed up with this - but not checked any of them out yet

Definitely. Thanks for the link. That's actually where I got the idea from. Didn't know they existed before this. Could be a gamechanger in terms of finally ripping down the dedicated roof space that's there for pool heating. Just gotta figure out if they are a) available in SA, b) affordable, c) what are the different options in terms of pumping/circulating, etc. Also never heard of the microinverters before, but i guess that's most likely for when you dont really have a battery bank feeding back and only want to push the power straight to the load and/or back to the grid

I've recently come across a video where this was showcased in an installation in Canada and since then I've not been able to stop thinking about the possibilities, especially for those perhaps with an existing pool pump already (or that's what I assume could be potentially used). Thoughts, comments, ideas? Dualsun Hybrid Solar Panel

I'm totally for this! Now just to find out how to enter

Looks pretty interesting indeed

This post has me quite excited. I've recently been annoyed with my solar doing nothing from around 1pm on a hot day so was looking at perhaps installing a smaller element into my current Kwikot 200L geyser and then moving it onto essential loads, but the heat pump solution is sounding better and better as time goes by. Still quite a rookie in the solar space with today marking having it for a year. Currently have a 5kw Multiplus II. When the family isn't paying attention and starts making evening food with kettles and airfryers the load can reach about 4.3kW for a odd 5mins and I start getting emailed alarms about temperature and overload on L1, which I've always attributed to the inverting capacity of the unit. That said, under normal circumstances the house draws about 700-800W constantly so there is definitely leeway to have it start heating up the water when the batteries are full during a normal day. That combined with a smart switch I plan to run via HA would be ideal for me. Would it be ok if i were to compile a list of smaller dumb questions to get the advice of the more experienced users here?

Solved. Installer came out again and replaced the UTP between the batteries and the Inverter, which at first did nothing. Then they played with removing the ESS assistant, combined with a Venux firmware update. The system kicked into action. Re-added the ESS assistant and it was fine again. Seemed somewhat pure luck really.

Hi there everyone. So finally got around to getting our ESS system in. Pretty new to the whole thing. Running it currently in Optimized with Batterylife. While i'm quite stoked with the operation it has currently, i'd like to take a bit more hands on control of when the battery stops discharging, PVs prioritize the charging, etc. Maybe i'm being picky, but myself and the mrs have some ideas on how we would best want the thing to operate to work best for us in terms of cutting savings for our routine and then also having a balance of being ready for a sudden substation failure, which is popular around here when it rains. The firmware settings by themselves seem pretty standard either this or that, but id love some time base controls. I'm pretty experienced in PLC and industrial programming, so the essentials of getting a script built should not be that hard. I read you can load a cronjob into the Venus, but not really been able to find any real guides on it. Even python scripts. And then also you can talk to the Venus via Modbus, which should be quite fun to play with. My question is to gather some info from others, has anyone done this? What are you experiences and which methods did you find to be easiest? Also in your opinions regarding the VRM portal when does the installer/retailer supposed to release control to the user? At this point he's left me with monitoring only access, so i have to walk down to the Venux each time if i want to change the Grid limit or SoC while im optimizing it. I've phoned them a few times but they seem to have stopped really bothering phoning me back after the installation was done, apparently too busy. Appreciate your time in reading this. Regards ----- MultiPlus-II 48/5000/70-50 VenusGX BlueSolar 250/70 MPPT Pylontech 3000 x 2 -----

Hi there all, So i recently got to the point where we were able to get a full on solar installed after some much needed advice from here, thanks so much. As my curse would allow me tho i seem to be one of the few that is experiencing a funky situation where the inverter is pretty much stuck in absorption mode all the time, topping up the batteries from the grid mainly whenever it drains below 100% and because of this the PV is just chilling as well as the entire system seems to be frozen in this kind of bypass mode. The retailer has been an absolute star in trying to help me get it all sorted out, but i thought perhaps i might just put some feelers out there if anyone else has experienced this as well? We even had Victron themselves log in and do a firmware update remotely and they are also somewhat stumped. The retailer has a suspicion it might be the CANbus cable we used that was sommer a UTP i had lying around (we actually tested 2), so i'm thinking of making up a new one from scratch to try and test if that helps. Anyone perhaps have the pinouts for that? I'm a rookie to this so maybe its not even called the CANbus cable, its the one between the Color Control GX and the Multiplus II. I also find that my VRM portal values are heavy delayed from that of the actual GX, which i wonder if its related. Attached a pic of what i see pretty much all the time for the past 48h - SOMETIMES the PV kicks in with 40W or so and then fades away again Additional info : Inverter switch is in position (1) Thanks in advance!

Wow.. Just when I thought I had my mind set on the correct inverter of choice I happen upon this thread.. Haha.. Yet again I'm torn between V and G. I'm a big fan of the ESS solution and wanted to go V initially , but the external mppt made my look elsewhere, since it doesn't fall in my budget of 30kish. The G seemed like the way to go but now I'm concerned about battery performance health and performance in the long term.

Thanks so much! That already clears up alot of questions that actually came up while I was watching that vid! Cudnt figure out if what i have in mind is an ESS or not

Hi there forumites. Ive been gathering info left and right for a system I want to put together, but have installed, DIY is NOT my forte. The basics are as follows.. 15kW/day load. Lookin for a hybrid inverter with built in charger that can keep the house alive during an outage (looking at pylontech batteries) and share the load between PV and the grid under normal circumstances (after the battery bank is charged). The idea is to eventually go off grid at a later stage in the future, but not in the next year or three, so over speccing the inverter a bit. I'm currently very fond of the victron multiplus 48/5000, but I lack the big picture knowledge to make an informed decision. Hoping some of you might shine some light please. I keep reading it has a built in charger for the batteries but then on other sites they want you to link it to a PV inverter, and on others they suggest linking it to a MPPT (which I've only recently realized is the charger portion... I think) yet I thought this was the inverter itself.. Freakin confusing. Any pros / cons for this one? Will it do the job as mentioned above? 48V batteries and all that. Max amount of panel watts it can handle? And lately I've been reading there is some magic voltage rules that ur array has to be in to match your inverter plus something about strings...Feels like the closer I get the further things seem. Thank you for taking the time to read this. Taking it one item at a time. Any help would be appreciated.