Hi I've got a brand new Growatt SPF 3000TL LVM-48P inverter connected to 4 brand new Li Time LiFePO4 12.8V 100AH (self heating) batteries in series. When I first connected the batteries to the inverter the batteries went into protect mode. That might have been the capacitance of the inverter so I used a resistor to precharge the caps. The Growatt powered up fine after that, but every time I turn on a significant load the batteries go into protect mode. In fact, if I have nothing connected to it except the batteries and my generator, the batteries will trip when I unplug my generator (Yamaha EF2000iS). After resetting the batteries I can plug my generator in and it works fine and the batteries appear to be charging, but unplugging it trips the batteries.
I thought the batteries might be over sensitive, but if I pull each battery aside and connect a 12V compressor to it and turn the compressor off and on and the batteries are fine.
Do I have a faulty Growatt?
I thought the batteries might be over sensitive, but if I pull each battery aside and connect a 12V compressor to it and turn the compressor off and on and the batteries are fine.
Do I have a faulty Growatt?