IDX CinePower HV-320B High-Load B-Mount Battery

The HV-320B is part of IDX's CinePower line of high-load B-Mount batteries, built for the 28.8V B-Mount cameras that a V-mount pack cannot feed - the ARRI ALEXA 35, Blackmagic URSA Cine, and similar high-draw cinema bodies. It carries 307Wh (10.7Ah) at 28.8V nominal and supports sustained high-current loads, so it runs the camera and its accessories through a long take without sagging.

Two 75W (15V/5A) D-Tap outputs and a 100W USB-C PD port (in and out) power and recharge accessories directly, and a 5V/2.3A USB-A port tops off small devices. A built-in OLED display reports voltage and remaining capacity at a glance, and over-charge, over-discharge, over-current, and thermal protection guard the cells. The battery weighs about 3.68 lb; the same line is offered as the lighter 154Wh HV-160B (about 2.21 lb) for smaller rigs.