SLi-300 14V mini Block Cinema Battery Plate Compatible
- 304Wh LiFePO4 at only 9 lbs lightweight
- UPS mode: charge and power simultaneously
- Modular linking expands total capacity
Veteran-Owned Business
USA Manufacturer
Block Battery offers a comprehensive range of professional cinema and broadcast battery systems, including the Protean 150 WHr voltage switching and mount switching on-camera battery solutions. These lithium-based batteries deliver reliable 14V–30V power for cameras, lights, and accessories across film, ENG/EFP, and broadcast productions, with options for travel-compliant and high-capacity configurations.








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Block Battery offers a wide range of voltage outputs to suit professional production equipment. Options include single 14V outputs, dual 14V/28V configurations, and multi-voltage systems supporting 14.4V, 24V, 28.8V, and 30V — covering everything from compact on-camera batteries to high-capacity block battery solutions for demanding cinema and broadcast rigs.
Talk to our experts for custom solutions and tailored guidance.

Powers cinema cameras, LED lights, and accessories on feature film and commercial production sets requiring reliable 14V–30V power.

Reliable dual-voltage battery systems for ENG and EFP crews powering broadcast cameras and field production equipment.

High-capacity block batteries powering LED panels, HMI fixtures, and lighting accessories on location and studio shoots.

Travel-compliant disassemblable battery systems designed for remote location shoots and productions requiring air-travel-ready power.
Talk to our experts for custom solutions and tailored guidance.
Block Battery's leadership brings three decades of hands-on experience in professional broadcast, cinema, and video production battery systems, ensuring solutions built for real-world demands.
Trusted across the US cinema market for feature films and commercial productions, Block Battery batteries are compatible with Alexa, Phantom, RED, and Sony CineAlta cameras.
Block Battery delivers superior build quality, responsive customer support, trade-in options, and competitive pricing — all backed by a veteran-owned, family-run American manufacturer.
Submit your inquiry and a Block Battery specialist will respond with tailored recommendations, pricing, and availability for your production needs.
For immediate assistance, feel free to give us a direct call at 714-928-1496. You can also send us a quick email at normk@blockbattery.com.
For immediate assistance, feel free to give us a direct call at 714-928-1496. You can also send us a quick email at normk@blockbattery.com.