Mpp solar shows low pv wattage

OffgridinFL said:

Ok I just noticed something I didn’t before. Testing the individual batteries one is bouncing up to 34v when ac is on. the other is stable at 23v. I guess this leaves me with 2 questions. Is the bouncing to 57 triggering the inverter to think is fully charged? Leaving the other battery drained. Then the second question is with that battery running that high on voltage is it defective and potentially dangerous? I shut it all down for now to be on the safe side

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That is unholy.

Your two 24V batteries are at wildly different states of charge and should be top balanced to true 100% SoC before being placed in series.

... and... 34V? WTF? If that's 8S LFP, you're at 4.25V/cell. That's a BMS that's not working.

snoobler said:

... and... 34V? WTF? If that's 8S LFP, you're at 4.25V/cell. That's a BMS that's not working.

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Contacted big battery they walked me through bms reset. All is working well now. Appreciate everyone’s help working me through this. Really appreciate the info in this forum.

Hi, I'm having the same issue with my brand new LVX6048 showing a low PV output with 6 to 7 LG 310 watt panels in series to get the required min voltage to turn the inverter on. Upon initial start up the inverter recognizes my solar input voltage which is correct, but that's it. Inverter does not produce AC output battery-less and no other icons appear but the solar panel icon and blinking BP for no battery. The only way this inverter produces any output is when I connect my 48v battery to it. Even then, PV shows correct PV voltage near 250v but barely a couple hundred watts. It should be near 310x7=2170 watts PV incoming, but it doesn't. I have applied 500 watt load, but it was pulling from battery only obviously since the solar only provided 200 watt max.