Power supply options for reducing camera battery weight on camera rigs

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

2006Brackets/Widgets forum

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

A DC-DC converter can step down voltage from a larger power source to camera-compatible levels, allowing the camera to draw power from a rig-mounted battery instead of an on-camera battery to reduce weight.
Custom cable makers can fabricate adapters to connect various power sources to camera power inputs.
A commercially available DC-DC converter with XLR input for 12V or 14.4V and Panasonic power connector output was available for around $169, though this option may weigh more than a standard camera battery.

The DC-DC converter's actual weight compared to camera batteries was not confirmed in the discussion.
Compatibility with non-Panasonic cameras like Sony HDV models remained speculative and unverified.
The specific power output capacity and real-world performance were not thoroughly tested or discussed.