Viofo A329S + Dashcam Battery Install in my Mach E

[Matts13]

Hello all, As I wait for my 2026 Mach E GT to arrive I'm planning my install of a 3 channel dashcam. I will be buying the Viofo A329S and the 70mai dashcam battery pack. I'm trying to understand the installation power end of things. Is this system going to be running off the dashcam battery pack full time car running and off? or is it possible to run the system off the car when driving then when switched off, the dashcam battery kicks in? I only see one power source to the Viofo. Can someone explain this to me?

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[NY_Cade69]

It will run off of the car's 12v when running, the car will also charge the pack - you need to do the hard wire...

 

[Matts13]

It will run off of the car's 12v when running, the car will also charge the pack - you need to do the hard wire...

But there is only 1 power IN on the dashcam (1 USB C), this is the confusing part for me.

 

[NY_Cade69]

USB-C has multiple pins, not just pwr and gnd...

 

[Matts13]

USB-C has multiple pins, not just pwr and gnd...

I think i understand now, So physically yes 1 usb c from the dashcam battery to the dashcam. The way that usb c is connected to the dashcam battery (power, ground and ACC) when the car is running the battery charges but passes the car battery power through, once the car gets turned off (sensed by the ACC) the dashcam battery kicks in.

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