Intelligent lithium-ion batteries with digital interface for professional cameras. Offer 47–293Wh capacity, precise runtime display, and hot-swap capability without interrupting recording.
Technical Details
IDX batteries utilize lithium-ion technology and offer capacities ranging from 47Wh to 293Wh. The digital interface employs a 4-pin connector, enabling data exchange alongside power supply. Typical models like the DUO-C190 deliver 14.4V/13.2Ah with a weight of 1.85kg. The system differentiates between V-Mount and Anton/Bauer Mount variants, with both formats supporting the same intelligent communication. The batteries feature integrated LED displays showing charge status in 5-step indicators.
History & Development
IDX System Technology introduced the intelligent battery interface in Japan in 1989, initially for Sony and Panasonic broadcast cameras. In 1995, the V-Mount standard became an industry norm, which IDX co-developed. Digital communication was expanded with TCP/IP functions in 2003, followed by the integration of USB-C ports for additional device power in 2018. Since 2020, modern IDX batteries have supported simultaneous charging and discharging, as well as firmware updates via USB interfaces.
Practical Application in Film
Productions such as "Dune" (2021) utilized IDX batteries for ARRI Alexa LF cameras, as the precise runtime indication enabled critical desert scenes without power failure. For documentaries, the system guarantees reliable power supply over 8-12 hours of continuous operation. IDX batteries simultaneously power cameras, monitors, and wireless systems via D-Tap outputs (12V/10A). The hot-swap function allows battery changes during recording without interruption, essential for live broadcasts and continuous takes.
Comparison & Alternatives
IDX differs from standard V-Mount batteries through its bidirectional data communication, whereas simple batteries only supply power. RED-Volt batteries offer similar smart functions but are limited to RED cameras. Gold-Mount systems from Anton/Bauer compete directly with IDX but use proprietary communication protocols. For budget productions, generic V-Mount batteries replace IDX systems but lack runtime predictions and health monitoring. Modern productions prefer IDX for planning certainty on complex shooting schedules.