Hi All, thank you for the wonderful advice on this forum. I have installed a new system 3x kodak axpert king 5kw inverters with 3x kodak fl5.2 batteries. Master and slave 1 and 2. 18 x 425 Canadian solar panels to be installed later. I had the fault 61 error but sorted that with Panthers advice above posted on September 2020. I have however before annything experienced charging issues with the battery furthest from master. It gets drained and my inverters dont charge it seems. Any advice would be greatly appreciated