Attached is the read out of the two batteries . When fully charged attached to 2000W 12V( Sungoldpower, inverter/charger ), using 1/0 copper welding cables, the inverter shuts down within mins from a load of 130amps(shunt reading) (13watt rated microwave). The voltage starts out at 14.2 volts and drops about 1mV/sec until reaching 12V on shunt meter(about 1min), inverter starts low voltage alarm <12volts and system shuts down load with 3 mins of the start of the load (microwave). Inverter is new and under warranty, Sungoldpower says it my batteries. Batteries charge up well and stay balanced, what do you think is going on? I have tried many different scenarios to fix this problem, but nothing seems to help.