Power in Alexa 35

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bradwozniak
Posts: 1
Joined: Thu Mar 20, 2025 4:16 am

Hello,
Shooting on the Alexa 35 and using the traditional B mounts. I found that it might be easier if we just use house power. Does anyone know if it’s dangerous to keep the b mount battery on camera while plugging in AC power? Or is that too much voltage? Let me know thank you!
Jan Heugel
Posts: 566
Joined: Wed Aug 13, 2014 3:15 pm
Location: Munich, Germany
Contact:

Dear Jeffrey,
you can sefely use two power sources.

The manual (page 21) outlines the imput priority function:
Input Priority
In case both power inputs are used, the camera supports to set which input is to be used preferentially.
► Select MENU > System > Power > Priority to set the power input priority.

Following options are available:
  • Power In (PWR) - Always use the PWR input when power is available on BAT and PWR.
  • Onboard Battery (BAT) - Always use the BAT input when power is available on BAT and PWR.
  • Highest Voltage - Use the input supplying the higher voltage
https://www.arri.com/resource/blob/3898 ... 0-data.pdf

Cheers,
Jan
Jan Heugel
Application Engineer
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