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Both positive and negative leas of consumers/charging sources (shore power, dc dc charger behind the alternator and solar power) have a bus bar. The + and - of the inverter are connected to their respective bus bars as well. I swapped the batteries. Most of the problem followed the battery...

Hi everyone! I’m new at this forum and run into the following: A few weeks ago I installed two Ninthcit LIFEPO4-battery banks in my sailing boat. They are connected in parallel. Each bank consists of 4 cells serial connected making it a 12v system and each bank has its own BMS. I noticed that...

I put 80 amps on the system for a few minutes and checked every cell terminal and lugs. There wasn’t any significant raise in temperature in either one of them. Unfortunately I don’t have an infrared thermometer to check more precise. I could try to find one here in the marina and do that later...

The + cables connecting the packs in parallel are the same length, diameter, quality, age, and terminals are the same. Also the resistance of the cables is the same. To make sure I swapped them and looked at the BMS’s. No difference with before the swap. The - cables are the ones from the BMS...

Each cell is 3.2V 280Ah. Is there a way to test the internal resistance of each cell to determine which cell could be the problem?