Power management solutions for operating Arri Alexa with Codex recorder on Steadicam rig

Gear

ZephyrCan I fly my Alexa or RED on a Zephyr?389

Master SeriesIs a used Master Series rig worth buying as a first big rig?191

BFDHow do I power my BFD receiver from my camera or sled?186

VoltCan I retrofit a Volt onto my existing sled or gimbal?168

ArtemisHow do I power my camera and accessories from an Artemis sled?166

MDRWhere can I mount my Preston MDR on my rig?143

ModulusIs there a Modulus option for HD wireless video?141

G-70Will my G-70 fit my vest, gimbal or sled?126

FI+ZCan I control iris and zoom wirelessly, not just focus?60

HU3Where can I get my HU3 repaired, refurbished or repainted?60

CineLiveHow do I pack and case my CineLive rig for transport?54

G-70XHow does the G-70X compare to Pro Titan, Xarm and other arms?46

Trinity 2Is Trinity 2 SUP 3.0 firmware safe to install or buggy?46

Ultra VestWhich vest should I choose for my body size, comfort and operator type?39

2013General Discussion forum

13 years old. Gear and prices may have changed since.

DisputedParticipants disagreed and reached no conclusion. Read the findings as positions, not as an answer.

The Arri Alexa camera can operate on either 12 volts or 24 volts, with some operators running it consistently at 24 volts
A single Dionic90HC battery can supply sufficient power to run both an Arri Alexa camera and Codex recorder together
The Codex recorder may perform better when powered at 12 volts rather than 24 volts
Power can be routed directly from an Anton/Bauer plate on the camera rear using a custom cable connected to the upper junction box to provide 12 volt supply
Powering camera and recorder separately from independent backpack batteries is an alternative solution to manage power draw constraints
Running a dedicated power cable outside the sled from a secondary battery D-tap to both camera and recorder can reduce power delivery issues

The setup advice comes from operators with years of experience but represents specific configurations that may not apply to all Steadicam rigs or shooting scenarios
Discrepancy exists regarding the camera voltage specifications between different respondents
No documentation provided regarding the actual power requirements or the maximum current draw of the Codex recorder in this configuration
The discussion does not address what happens if power solutions fail during actual production