Hello I am connecting a quattro in its first connection to a lithium battery, it gave me the normal spark but it was very large, I checked the fuse and it has continuity, I made a second, third and fourth connection and it gave a great spark again and the batteries The lithium batteries were restarted, I did not leave the inverter connected because the batteries would restart with some possible equipment failure and damage the batteries.
I have turned on many multiplus and quattro and had not missed this big spark. the polarities and wiring are well checked.
I would like to know if I continue with the startup or do I need to do some other verification.
After removing the fuse to check the continuity of the fuse, I measure the voltage at the Quattro terminals (positive and negative terminal) and the capacitors do not remain charged, they reach 2.2V, they do not charge at the battery voltage of 50V.