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Wayno

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  2. Inverter Batt indicator drops to 25% immediately after AC input failure

    Wayno posted a topic in Inverters
    The battery indicator on my Axpert 5kva Inverter (48v - 4x100ah new Batteries) goes down to about 25% immediately after utility input fails, regardless if the load is at 280watt or 1000watt at the point of input failure. My inverter is not connected to any PV panels and the DC low cutoff is set to 48.4v. Anyone know why it would do this? I would expect the inverter to start at 100% Battery reading and then gradually to go down to 25%. On the last test I did, the inverter read a current load of about 3amp to 4amps at the time of AC input failure, which should last a long time with the 400ah battery bank, but it didn’t seem like it would even make 3 hours. I didn’t have a chance to run it for 3 hours to confirm. Do You think I need more batteries? If I do, could I ad another bank of 4 batteries a month after the first bank was installed?

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