Fault warning code 4

Hey guys,

My 2000w inverter/charger turned off after beeping with a fault warning 4 (low battery voltage). What would cause my battery to be low voltage. The whole system is <4 months old. Don't know what could be the problem and how to fix it. 

My battery voltage is reading that it's 12.5 on my charge controller and my battery monitor. Any thoughts?

Thanks y'all


  • Aaron,

    It sounds like you may be drawing too much load for your battery bank. What are you trying to run when this occurs?

    Thank you

    1 person likes this
  • I have a 200AH Gel battery and the only thing I’m running off the inverter is an AC dorm fridge/freezer. Would getting a second battery allow me to continue to use this fridge off the 2000w inverter/charger? I appreciate your answer. It’s been a pickle for me.
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