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peterbgreen's avatar
peterbgreen
Aspirant
Apr 17, 2017

DC voltage range for AC1750 WiFi cable modem/router

I would like to know what is the DC input voltage operating range for my AC1750. The rated voltage is 12V but I would like to know the minimum and maximum voltages that the unit will operate from.

I am considering using the unit with a DC battery back up UPS system instead of the power adapter that comes with it so that it will operate from a battery if the mains voltage cuts out.

 

 

Hardware

2 Replies

  • William10a's avatar
    William10a
    Master
    Apr 17, 2017

    I would say that only a few volts either way since the router's ciruits are design for 12 volts dc too low the firmware could be damage or hardware and too high you could burn out parts in the router. You could run the router off a 12 volt battery with a fuse inline to protect the wiring from the battery remember a 12 volt battery charges at the mid 14 volt range depend ing on the battery type.

    • peterbgreen's avatar
      peterbgreen
      Aspirant
      Apr 17, 2017

      Thanks for your comments. I understand the risks which is why I want to find out the safe operating window for input voltage before attempting to connect a battery. The SLA battery voltage would be typically 13.5V when fully charged (higher while charging as you say but it wouldn't be connected to the router under that condition) so I want to be sure up to 14V wouldn't damage the router. 

      I may try running the router from a bench power supply with a current limit to determine the range but I would prefer to get actual limits from Netgear.