Powering ARRI ALEXA Mini or Mini LF from Steadicam® sled at 24 V versus 12 V: electrical efficiency versus practical workflow

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

2022From a Facebook group: The Steadicam Group

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

The majority of operators report that 24 V delivery halves the current draw compared to 12 V while maintaining the same power output, reducing losses in cables and connectors, and cameras reportedly run more reliably at 24 V.
Several operators report subjectively longer battery runtime when operating cameras at 24 V.
One operator has run ALEXA Mini and Mini LF trouble-free at 12 V for years, using hot-swap battery changes with a dedicated external 12 V auxiliary battery mounted at the dock, which powers the entire rig while docked, preserving the sled's onboard batteries.
The claim that 24 V storage batteries offer double capacity is not physically accurate; the total energy stored remains unchanged, only the current draw is halved.

Choice depends on existing sled infrastructure, available 24 V camera cabling, dock design, and operator preference for battery swap workflow versus reduced electrical losses.