September 28, 20232 yr Hello everyone. My 3 year old SOL-I-AX-5VP Mecer Axpert 5kw is having issues during charging my 10kw li-ion battery. It worked fine until lately I noticed the lights dimming slightly for a few seconds, while the inverter is bussy recharging the battery bank. I do not use any solar panels. The charging only takes place from the mains. At Prg. 2 I had programmed 60A and at program 11 - 40A. It worked well for a year and a half... Now it starts charging but after 10 or so minutes it is cutting off the power and then imediately restarting the charging process. On occasion I hear some arching noises inside. The lights dimm slightly too. I have dropped the charging Amps from 40 to 30 and things got somewhat better. But it did not last long. Yesterday I dropped it even more (to only 10 amps). And today I went all the way down to 2A! Obviously, 2A is not enough. And the issue is not fixed even at 2A. However, if I ask it to do ONE thing at a time, everything is fine. In other words, the issue only appears if the inverter must recharge the battery and at the same time supply electricity to the house. No error messages are showing on the display. No issues during discharge (even at full load of 5000Watt). Only the charging has this issue. And only if charging while also supplying electricity to the house. Because of the occasional arching noises, I am afraid it will catch fire... What can cause the arching noise and constant disconnections during charging? It sound like a "dry join" contact, where lots of amps must pass thru... How does the inverter accomplish the task of recharging the battery pack AND at the same time, supplying the house with electricity? Obviously, something is wrong with this division of tasks. Any help will be much appreciated. Edited September 29, 20232 yr by GoMario Added extra info.
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