I have replaced the old deep cycle batteries with a 5kWh Lithium Iron Phosphate battery. There is no load on the system at the moment and pass through power is not part of the calculation as there is no AC input. The inverter is a MultiPlus 24V/3000VA/70A.
I have a 24v 3000va inverter that goes straight into overload error when powered up from battery. When powered with a 230v AC input it is fine. Any ideas? It runs in an off grid setup so under normal operating conditions there will be no AC input.
I am trying to get my Sunsynk to communicate with the 5.7kWh Alpha-ESS batteries. I believe it is possible and they are listed in the Sunsynk manual as an option. I would be very grateful for any advice.