B-Mount Battery & Charger

B-Mount batteries are primarily designed for ARRI cinema cameras and related accessories. Block Battery's Protean is compatible with Sony FX9, RED, Canon cinema cameras, and other professional cinema and broadcast cameras that accept Gold Mount, Gold Mount Plus, B-Mount, or V-Lock style battery mounts.

Yes. The Block Battery Protean is travel-ready — it splits into two electrically and mechanically isolated 75Whr batteries, each under the 100Wh threshold, making them compliant with TSA and airline carry-on regulations for lithium batteries. This eliminates the hassle of checking power on location shoots.

The Protean offers both 14V and 28V output modes, switchable to suit a wide range of production equipment. The 28B configuration delivers 28V in a B-Mount style, while 14V and 14G configurations provide 14-volt output for cameras, lights, and accessories in the 0–150 watt load range.

The Protean delivers 150 Watt Hours of total capacity in a single compact battery. In travel mode, it splits into two isolated 75Whr units. This capacity supports powering lights and accessories rated between 0 and 150 watts, covering a broad range of on-set cinema and broadcast equipment requirements.

Yes. Block Battery's VMA-4XLR adapter allows Gold-Mount power sources to connect to B-Mount or V-Mount cameras via a 4-pin XLR output. This is ideal for productions that have existing Gold-Mount battery systems and need to power RED, ARRI, or other cinema cameras with different mount interfaces.

Yes. Block Battery provides custom solutions for challenging power requirements, including high current and high capacity configurations. They support multiple voltages including 14.4V, 24V, 28.8V, and 30V. Contact their technical support team directly to discuss specific production power needs or non-standard equipment configurations.