June 23, 20224 yr I have 2x og-plus5.48 inverters in parallel conected to 3x up5000 batteries if i switch the inverters off by the round grey button on the inverter the alarm 04 goes away and the batteries charge as normal but as soon as i switch any one of the inverters on it immidiatly gives me error 04 low battery but on the inverters i can see the voltage is 52v and on the batteries all the lights are on showing batteries are full
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