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Time is of the essence but I wanted to get a thread out here that I can update and receive feedback on! You've seen this before, I think two other members on this forum have started threads for their CATL module builds. So I won't go into what they are too much other than to say each is 20s...

Hello! I get a lot of FOMO and purchase when I see a good deal. So I currently have 40 235w vinyl-cracked solar panels from Santan solar ($1400 shipped to me). I also have about 20 10ft Unistrut/Superstrut struts for mounting the panels to. My original idea was to ground mount, until I was...

Hello, For the SMA Sunny Island SI-6048us, the manual reads: "The battery capacity (parameter "221.02 BatCpyNom") is to be entered as the nominal capacity for a 20 hour discharge (C20)." I have built a 16s5p 280ah 48v battery bank. These consist of four salvaged 20s 60v CATL modules, which I...

Hello, It appears I pulled a rookie-move and had my JK PB2A16s20p balancing turned on when the cells were at 70%, where they came from the factory. I didn't realize I was possibly doing harm... now I know. In any case, I have five of these BMS, five 48v 280ah packs. The cells are...

Hello, I'm currently running wire between a Midnite E-Panel and SMA SI-6048 (along with battery). From the following instruction, it appears I am to 'bond' (connect) the inverter/battery's negative to the entire system ground. Is this correct and necessary? I did not expect to see this but I...

Hello, I'm at my whit's end with these BMSes, trying to get any of the five I purchased to communicate with my PC :) I really need help. I purchased five of the JK PB2A16S-20P BMSes from the AliExpress Hankzor store. Here is the link. https://www.aliexpress.us/item/3256805875302235.html The...