12V Power Supply to RAK7249

Hi all,

I would like to power my RAK7249 from 12v rather than PoE 48v.

By checking the board and user manual, I notice there is an undocumented socket as below.

Can I ask:

  • Can I connect my 12v DC mains to this socket and power the RAK7249?
  • Can I keep the backup battery connected and
  • If my mains 12v failed, does the board switch to battery automatically?

Thanks.

Cheers,
Paul

Dear Paul,

  1. You can connect your 12v DC mains to this socket and power the RAK7249(This socket is for 12V DC);
    2.Of course,you can keep the backup battery connected and 12V will charge battery;
    3.No,usually the output of battery connects to DC socket.If you connect your 12V DC mains to this socket,how can you connect the output of battery to the socket also?Actually,if you use PoE to power RAK7249,the regulator on board will output 12V,12V (Parallel connection with the output of solar)will charge battery,the battery’s output connects to the DC socket.If PoE failed,the board will switch to battery automatically.

Hi Jeff,

Thanks for your help.