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Yea, I could do that I suppose. I just generally don't trust anything life / safety critical from Ebay - It is so flooded with nearly perfect fake / counterfeit car parts I assume that is the same for everything else too. For anyone who doesn't know what I mean:

Makes sense - and thank you for the excellent videos you all do!

Thank you for the feedback! Correct. Testing the Growatt completely disconnected from everything, powered off, no battery, nothing: in-G to out-G: Continuity in-N to out-N: No continuity in-N to in-G: No continuity out-N to out-G: No continuity My Growatt is several years old - purchased...

@Zil can you specify if that is for circuit safety/completion or Lightning safety/protection? This is what nobody ever talks about when the discuss grounding, why we always talk past each other. For example if I have the unit: -Disconnected from shore power -Being charged via solar power by a...

As far as I know, I have sized my shunts based on that rule.| PV input: 100A shunt for expected Max typical load of 50A Battery positive Out: 300A shunt. Even if I was constantly maxing out the Growatt at 3000W AC (which I won't), that would be ~138A DC. That still leaves 40+ Amps of direct DC...

I was hoping people might be able to review my solar generator plan for safety and effectiveness. Please excuse my horrendous drawing. Do you see anything obviously wrong or unsafe? Any easy ways I could improve? Any additional items I might want to add for more functionality? Components...

Agreed - I'm actually building a box for it. The final physical format and layout won't be anything like the handcart build, but that was the video that inspired putting this together - cheap Ali cells plus an All-In-One controller in a semi-portable footprint.

This thread is really helpful for this comparison so I thought I would add to it. Both of the manuals for the Growatt 24V and the MPP2424 say that you should install a 40A breaker on the AC charger. To me this suggests that they are using the exact same hardware (which we knew) and that...

Thank you for the detailed reply. The cells were all carefully top balanced when I built the system and up until the last few weeks they have been consistently within +/-0.005-0.01V on each cell. I also capacity tested when I built it and came out within 3-5AH of advertised, which is all I...

Electrodacus It's the BMS, not just a monitor.

It would be really awesome if the thread called "best practice of clamping force" actually answered the question. Remind me never to paint a shed with you all.....

lol, I mean I guess that would prove it works....at the expense of having to buy it again ?

Yes, I'm using "portable" very loosely here. I'm going to install the generator system in a box/trunk. (Yes, I know the Growatt has to breathe). All told it will be about 115-120 lbs. So "portable" in that it's not tied to my house / grid and I can take it somewhere else. The large 60/72 cell...

Got it - thank you Perfect! So that's a question I meant to ask. I cannot find any MC4 connectors that can handle that kind of amperage. The Renergy 2>1 connectors claim to be able to support 50A, but it doesn't say if that is Max or Continuous. If I went with those can I stack them to get...

Fantastic, thank you! Will do that today and report back For anyone wondering how I managed to do this: I have a small 12V fuseblock coming off the main disconnect separate from the BMS / AIO system. All it has are a couple of USB plugs, but a small load (RPI Zero) was left plugged in for a...

For simplicity sake of the discussion lets say I have this exact system: If keeping everything "floating" presents a low electrocution risk, that is good enough for me.

Do you think this is true even if you are using something with some give, like wood plates for the end caps? What are you using for endcaps?

I'm finding this thread a full year later and the status seems to be the same: There are zero Blue Seat Class T fuses <200A available online, and very few of of the 200-400 amp either. I spoke to bluesea customer service just now and was told their system doesn't say they have been...

Fantastic! That answers all of my questions. The 72 Cell panels are all quite a bit more expensive so I think I'm going to start with 3 and then add on later. That should give me 1000-1095 watts, at 48V / 30A and all operating independently in parallel - That's exactly what I need.

I emailed Dacian of Electrodacus and he said I could post his responses here for the community: My email: His response: I'm having a little trouble parsing all of his responses.

I found them just after I posted. Glad to know they are legit, thanks!

If I am reading him correctly, I should: 1. Connect SBMS0 EXTIO3 to Growatt Inverter On/Off switch to disable inverter at High or Low Voltage. (This I knew, seen in Will's video) 2. Connect solid state relay from SBMS0 to EXTIO4 to AC Input to Allow SBMS0 to control AC charge and disable on OV.

Oh I would install panels if I could! It's not a question of funds, but living situation. Unless I am misunderstanding what you mean by "Active" - The Electrodacus is an Active BMS. It's default settings are: "Balance on Charge" = Yes "Balance on Discharge" = No Only balances above 3.2V by...

I don't know what T/T is, but I suspect it is some variation on a standard Wire Transfer. If that is the case: A wire transfer cannot be reversed or cancelled. Once you send it, it is gone. If you make a typo and send it to account 44678 instead of 44679, too bad for you. With a Credit Card...

After doing some reading over on the Electrodacus forum I believe I have figured out my problem. By default, the electrodacus does not Balance on Discharge. Since I was using my system without any type of recharge (no solar or no grid, just using the battery) the Electrodacus was never...

Just as an update here for anyone in the future: I did a full discharge cycle to see if there was a balance issue. The BMS is set it cutoff when any cell hit 2.8V Before Low Voltage Cutoff I was able to draw almost exactly 270Ah / 7000 Wh and the BMS was reading "3%" remaining. 270ah out of...

I haven't gotten it setup yet - Amazon lost some packages and I'm still waiting on a desktop power supply to charge and balance my cells before I start building. I did not order the Wifi modules for the Electrodacus or the Growatt, but both have one available if you want it for remote management.

Thanks for the data - So it sounds like the Electrodacus just flags whatever you set at Max Charge V to be 100% on the meter. Good to know!

Well...both. It is not permanently grid tied. But I will use a wall outlet to charge the battery when shore power is available.

This feels like an obvious newbie question: 1. The Growatt 24V SPF 3000TL LVM can support up to 60A AC input charging. 2. The Growatt 24V SPF 3000TL LVM can support up to 3000W @ 120VAC, or about 25 amps output. How can I utilize this in a stand alone system? Meaning this will not be...