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thanks for your detailed response as usual sunshine_eggo You had recommended I go with these So for my scc I did the same, should I open expert mode to set the fixed charging and 1 hr absorption time? I'll move over to that method if more flexible I was under the impression the drop off was...

When I checked on my system this morning, my multiplus was OFF and the low battery light was flashing I have recently added solar and have been testing it out over the past 8-10 days. Settings I used in the charger are the same as in the MPII as per posts I’ve read. With not much sun lately...

I was interpreting it as the BMS asking for that voltage, not setting it as a limit. Now I get it, because I thought the BMS was asking for 57.0, I figured my setting of 55.2 was sort of moot, I was interpreting it backwards. Thanks guys

I tested my setup with a full charge and the updated settings to see how DVCC would do and all seems fine to me. I'm still not sure how the charge setting of ( 55.2V - 3.45V/cell ) interacts with the battery's setting of 57V sent to to the DVCC setting page. Does anything stand out from the...

Yes of course, I'm still new to this so don't remember all the settings. I remember setting it at 48V shutdown, 49V restart and 49.5V pre alarm. I'll reset the settings to your suggestions and will keep the solar mppt settings noted for when I get solar, soon I hope. As I don't have solar yet...

Ok, I understand the Batrium, I was sure the discharge floor % in the shunt told the multiplus to stop inverting , good to know. SO if I'm not around during a power failure and the MP doesn't stop inverting am I relying on the internal batt BMS to kick in? You have three battery monitors: /...

OK, thanks all, there's a lot of info to get into here. Is a Batrium an external bms or SmartER Shunt? With regard to the "time to go" does the smarthsunt tell the Cerbo what discharge % I've entered? If so, given my battery and shunt are showing different states of charge and both are...

Sorry about that, yes, I added the photos to clarify what I'm seeing. I still have my doubts about it functioning properly though. I guess it's the kind of thing you have to have at least seen working properly once to know whether it's supposed to look a certain way, or to know if something's...

Hi, when you say "BMS not tied to the Cerbo" what do you mean?

I’ve recently completed the first steps of my first system ( see signature ) and have been getting familiar with the settings in the last few weeks.( I remove AC-IN for a bit then re-plug it to charge the batts ) It has been suggested that I enable DVCC for more accurate measurements so a few...

Much Appreciated, The settings will remain.

Hi After updating settings MP went immediately to Bulk, Absorption and finally Float With your setting suggestions ( copied from your screenshots also) the batteries entered float and have been in float for much longer than with my previous settings, Storage has not appeared in the arm this...

HI sunshine_eggo , In your screenshot above your battery is at 57.76v, at what voltage does your bms charge cut-off engage? Also, I set the discharge cutoff to 48, just tired so I didn't remember where it was configured.

Thanks for your info, I'll answer what I can and will try to find the answers to the rest in another post if necessary. While the batts were charging the shunt was constantly displaying 100%, I read in multiple places as well as video tutorials that I had to sync when they were fully charged...

I have just installed the first components to my home backup system charging from the grid, solar will follow in the spring. Multiplus II 48/3K - Smartshunt - CerboGX - 2x 48v100ah batts. I’ve read ( haven’t stopped ) way too many posts and second-guessing myself, so wish your input to either...

Hey Rednecktek, thanks for the math, I’d done a bunch myself but replacing numbers in someone else’s thought process allowed me to really gain confidence that my project may actually work. Does this make sense? Does it look like I’ve forgotten anything? The nice thing is that a single "24v"...

Hi MichaelK, thank you for chiming in with your experience. You are correct about the glycol during sunlight hours yet there are electronics that must run continuously. I could deal with these via a timer but I only gave the basic info in my original post so as to not veer off course too early...

I've been thinking about this for a long time but this is my first attempt at pv so please bear with me. I started out wanting to create a battery bank and inverter to power 2 glycol circulators and associated electronics for when my home lost power rendering my large solar thermal system...