Recent content by jsl10

Hi, As the original poster to this thread, I can say that I've been very happy with the Growatt inverter. It's been running now for about 8 months 24x7. Every day, it's used for charging a PHEV (plug-in hybrid car) and keeping a garage refrigerator and a stand-alone freezer running. In power...

That's what makes projects like this fun... learnings things! So moral of the story... ground the batteries (and cabinet) to the same ground as the inverter! Just like the instructions say to do! :rolleyes: So what are your battery dip switch settings? Mine are: Battery 1 (Master) - D D...

Thanks very much for double checking the cables!! I know it was probably a hassle but much appreciated! At first (the other day) I was thinking in terms of Ethernet and it would of been a problem. But I was overlooking the fact that they talk in RS485 which is indeed a two wire transmission...

Hi... Could you confirm that you found your battery to battery cables to be pin-to-pin with none crossed. Thanks!

Good job testing all your cables. I know what you mean about needing a magnifying glass. Previously I tried just testing with my multi-meter but the meter's test leads were to thick to make contact with the little pins in the connectors. Anyway, with five batteries I only needed four of the...

Ya, I hear ya! But that's where a tester comes in. It can check for split-pairs. That's odd that your short cables (supplied with batteries?) don't show pins 1 and 2 crossed. All mine do. Of course, on the tester even that seems intermittent. Sometimes they are crossed and other times not...

I figured testing the cables was a VERY big long shot but I pulled all the short battery to battery cables off (not being used in US2 mode anyway) and dug out an RJ45 tester I had. And sure enough, out of five cables showing only pins 1 & 2 crossed, ONE cable also showed pins 4 & 5 crossed...

I notice in the battery manual it says it uses pins 7 and 8 for data on it's communication port. RG45B spec. says that pins 7 and 8 are Bi-Directional Transmit + and -. So that's fine. I pulled all the battery to battery cables (the little ones supplied with batteries). I tested all four on...

Thanks for all your help in trying to figure out this mystery! I'll continue to post here any new things tried and results. In the mean time, I'll switch back to US2 settings.

Also, does your guy have the same two Growatt inverters and using the same settings on both?

I changed setting 14 to OSO, turned the inverter off, waited and then back on. I did not power cycle the batteries though. Sadly, nothing changed. Your guy is getting the same capped solar power with Li setting??? If so, he should contact Ethan Rogers at Signature Solar and let him know...

No, I hadn't tried OSO. I'll go do that right now...

Smart? Don't know about that. But prior to retiring I was a software engineer so pretty use to debugging things. I did switch setting 14 to CSO. Well... I did the test (swapping which battery was master, changed all dip switches accordingly and changed battery type back to Li). And guess...

Here is my thinking on setting 14 (I could very easily be wrong!)... first the manual says that the setting is only used when in "line" (utility), standby, or fault mode. It says when in "battery mode" only solar is used. So with setting 1 at "SbU" does setting 14 even matter UNLESS the...

I believe the 12K inverter draws 150W when ON and no other load. Over 12 hours that's 1.8kWh. Anyway, I've read here that it's common for the SoC to be stuck at 100% since without BMS communications, the inverter won't know what the SoC is. So maybe that's to be expected with the US2...