For large cinema cameras, power-hungry accessories, and full-day productions, filmmakers need a battery that offers unwavering endurance. The Rolux Density III 290Wh USB-C V-Mount Battery is built for exactly that—delivering exceptional capacity, reliable high-current output, and modern charging conveniences in a rugged, production-ready form.
Designed for high-demand workflows, this battery is ideal for cinematographers who need long runtimes without interruptions or frequent swapping.
Massive 290Wh Capacity for Continuous Operation
Equipped with 290Wh / 20100mAh of energy, the Density III offers one of the longest runtimes in the Rolux lineup. Its 14.4V rated capacity ensures stable, consistent performance with cinema cameras, field monitors, high-output wireless systems, and LED lights that require serious power.
Available in two size configurations—
- 120 × 91 × 90 mm
- 120 × 91 × 102 mm
—the Density III provides options that balance capacity and physical size depending on production needs.
Weight varies slightly between 1380g and 1390g, giving it a solid, robust feel while still being manageable on shoulder rigs, carts, and studio setups.
Complete Power Hub for Professional Gear
Like the earlier models in the Density series, the Density III offers flexible I/O options, but its large capacity makes those ports even more valuable on long shooting days.
BP Electrodes
- Output: 14.4V 15A
- Input: 16.8V 3A
D-Tap IN/OUT
- Output: 14.4V 15A
- Input: 16.8V 3A
This dual-role D-Tap allows filmmakers to either power accessories or recharge the battery using compact D-Tap chargers—very useful for mobile crews.
USB-C PD Port
- 65W Output
- 45W Input
A must-have for creators who rely on USB-C laptops, mirrorless cameras, SSDs, and mobile devices on set.
The Density III can keep modern digital tools powered throughout a full production day.
USB-A Port
- 5V 2.1A Output
Reliable for small gadgets, wireless mic receivers, or phones.
With these ports working together, the Density III becomes a central power platform, supporting both traditional cinema gear and digital peripherals simultaneously.
Engineered for Extreme Environments
The Rolux Density III is designed to operate in harsh outdoor conditions. With a working temperature range of -10°C to 60°C, it performs reliably in winter, desert heat, or unpredictable field environments.
Charging remains safe and stable within 0°C to 40°C, helping maintain battery health and extending its lifespan.
This resilience makes it a trustworthy choice for documentary filmmakers, adventure shooters, broadcast crews, and long expedition-style productions.
A Professional Power Solution for High-Draw Systems
The Density III shines in setups where smaller batteries fall short:
- Large cinema cameras (URSA, FX9, C300 series, RED systems)
- Multi-accessory rigs with monitors, follow focus motors, wireless video systems
- High-output LED panels or compact location lights
- Production carts and studio builds that run all day
Its high current delivery of 15A ensures steady performance even under heavy load.
Why Choose the Rolux Density III 290Wh?
- Massive 290Wh capacity for long, uninterrupted shooting
- Dual D-Tap and BP electrode power for versatile output
- USB-C PD for laptops and modern accessories
- Rugged build for extreme temperatures
- Available in two sizes for different rigging needs
- Ideal for cinema and professional broadcast systems
When maximum endurance is the priority, the Rolux Density III 290Wh USB-C V-Mount Battery is a powerhouse designed for serious filmmaking environments.