The Blackmagic Design Gold Mount Battery Plate for URSA Cine attaches to the rear of your URSA Cine camera body to enable Gold Mount battery power. This plate accepts a variety of third-party Gold Mount batteries, like the Anton Bauer Dionic XT90 Gold Mount Battery and Core SWX Helix Max 98Wh Dual-Voltage Battery – Gold Mount, which is currently the only battery that currently supports the full 60fps+ capabilities of the URSA Cine.