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I am new to solar, but handy and willing to tackle a small setup. We are plagued with frequent outages lasting a day to several days. I have (4) new 450W Znshine bifacial panels. (max V - 42.10; max A -10.69 ) I also just upgraded my golf cart to a custom built LIFEPO4 leaving me with 6 fairly...

Any insight on voltage calibration on JBD units? BMS is a new 7-20S AP20S. The unit originally wouldn't power on, but did eventually after it was "jostled" around (possible short internally?). Now that it is "working", the cell voltage displayed on the app is inaccurate on every cell.. The app...