What the thread found

• A Red One camera drawing 5.5A during HD recording on a 12V 28Ah lead acid battery provides approximately 4 hours of runtime before the 11.5V shutdown threshold is reached.
• With full accessories including monitor, focus control, second monitor, and HD transmitter, a Red One draws approximately 9.5A, reducing usable runtime to about 1 hour before shutdown.
• Heavy current draw from accessories causes voltage to drop significantly under load, triggering camera shutdown before the battery is actually depleted of usable charge.
• Using shorter, 12-gauge battery cables with clean connectors and new batteries helps maintain voltage delivery to the camera.
• A Battery Watcher device can display both voltage and ampere-hour consumption, revealing that a camera may shut down with 80% of battery capacity still remaining due to voltage sag under load.
• Higher voltage battery systems using 12 NiMHd cells at 16.4V or 7 lead acid cells configured for 14V output can extend usable runtime by maintaining voltage above the camera's shutdown threshold during high current draw.
• Standard XLR battery connections should be wired with pins 1 and 2 connected together and pins 3 and 4 connected together.

Depends on

• Discussion focuses on sealed lead acid batteries and does not cover onboard Steadicam batteries or lithium solutions.
• The 4-hour and 1-hour runtime figures assume specific battery capacity and current draw conditions that may vary with different setups.
• No testing data or independent verification provided for alternative voltage solutions mentioned.
• Specific rental house practices cited without detailed performance metrics or comparative analysis.

Gear in this thread

FI+Z

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