For filmmakers who rely on long-lasting, high-output power solutions to support demanding cinema gear, the Rolux Grand III 250Wh Gold Mount Battery (USB-C) is designed to meet the needs of serious production environments. With a significantly larger capacity and advanced USB-C PD technology, this powerhouse battery delivers exceptional runtime, strong current support, and multi-device flexibility—all in a rugged, professional-grade form factor.
Massive 250Wh Capacity for Extended Runtime
The Rolux Grand III features a substantial 250Wh / 17,250mAh capacity built from dependable Samsung 35E 18650 lithium-ion cells. This ensures steady, efficient power delivery for high-draw cinema cameras, LED lighting, monitors, and wireless systems throughout long shooting days.
Its 14.4V rated voltage and 220W maximum output make it ideal for powering modern digital cinema systems that require consistent voltage regulation and strong current supply.
Despite being a high-capacity battery, the Grand III maintains a practical, production-friendly size:
- Battery Size: 127.3 × 82 × 101.9 mm
- Weight: 1290g
This larger footprint supports the extended energy storage while still remaining manageable for field and studio work.
High-Current Outputs for Professional Gear
The Rolux Grand III is built to integrate seamlessly with professional camera rigs through its robust power interfaces:
Primary High-Output Ports
- BP Interface: 14.4V / 15A
- D-Tap Output: 14.4V / 15A
These outputs support high-power cinema cameras, external monitors, focus systems, wireless transmitters, and more, ensuring stable performance even during peak consumption.
Advanced USB-C PD Technology for Universal Device Support
The Grand III elevates on-set convenience by offering next-generation USB-C Power Delivery:
- USB-C Output: Up to 100W, supporting PD2.0 and PD3.0
- USB-C Input: Up to 65W PD fast charging
The 100W output is especially valuable for powering:
- Laptops
- Portable editing devices
- Tablets
- Fast-charging accessories
This makes the battery an excellent companion for remote shoots and mobile production workflows.
The 65W USB-C input also allows the battery to recharge quickly using widely available PD chargers—ideal when traveling light or charging on location.
Additional Accessory Power Options
To support a wide range of filmmaking accessories, the Rolux Grand III includes two dedicated DC outputs:
- DC1: 12V / 3A
- DC2: 8.4V / 3A
These ports allow you to power monitors, converters, wireless receivers, or audio equipment directly from the battery, reducing clutter and improving rig efficiency.
Reliable Performance Across Challenging Conditions
Designed for professional filmmaking environments, the battery operates reliably from –10°C to 60°C. Whether shooting in cold outdoor settings or under intense lighting conditions, the Grand III maintains stable performance, thanks to its high-quality Samsung 35E cells and robust internal protection circuitry.
These components ensure consistent voltage output, safe charging, and long-term durability.
Why the Rolux Grand III 250Wh Gold Mount Battery Stands Out
- Large 250Wh capacity for long-duration filming
- USB-C PD 100W output for laptops and high-power mobile devices
- USB-C PD 65W fast charging input
- Dual 15A camera outputs for power-hungry cinema systems
- Two DC accessory outputs for complete rig integration
- Dependable Samsung 35E lithium-ion cells
- Rugged design built for professional production environments
The Rolux Grand III 250Wh Gold Mount Battery (USB-C) is an excellent choice for filmmakers who need extended runtime, strong multi-device capability, and dependable performance on demanding shoots. With its combination of high capacity, PD fast charging, and professional I/O, it ensures your entire production stays powered—no matter the location or intensity of the work.