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Thank you for your response @12VoltInstalls. I looked in the manual that Giandel can handle up to 16V max so is it possible to change the threshold from 14 to 15 maybe? I bought this used and I don't have the communication module for it etc... I think it may have been set to 14V by the...

Can the issue be also that the load is too low on the inverter?

Perhaps....it was installed by the service provider. So do you think it's the modem then? If this is the case, then lead acid battery maybe better in my situation?

So the output is 12V 2.5 A and the input is 100-200V with 1.0A and 50-60Hz

I'll investigate further and get back. Need to do it when no one is using the internet... But the battery doesn't have any plugs.....do you mean I need to connect with the 6awg cable directory from battery to the modem?

I'll investigate further and get back. Need to do it when no one is using the internet... But the battery doesn't have any plugs.....do you mean I need to connect with the 6awg cable directly from battery to the modem?

I see, thank you. Will report back to see what works.

Thank you, it could be it as well. I will report back once I figure out.

Hi I have the following setup. 1 - Used Canadian 240W Solar Panel connected to 20A mppt renogy charge controller connected to LiTime 12V 50Ah lithium battery connected to Giandel 1200W pure sine wave inverter. My modem is plugged into the inverter. Everyday when the input Voltage reaches...