Sound Devices A20-Battery Doubler

Dual Battery Adapter for Extended A20-Mini Runtime in the Field
The Sound Devices A20-BatteryDoubler is an innovative dual-battery adapter that significantly increases the runtime of your A20-Mini wireless transmitter. By accommodating two NP-BX1 batteries, this adapter is purpose-built for extended production days, offering up to 9 hours of continuous operation. Designed with professional workflows in mind, it provides a simple way to double your battery capacity while maintaining a compact footprint.

Fits Two NP-BX1 Batteries for Maximum Runtime
Engineered for efficiency and practicality, the A20-BatteryDoubler replaces the standard battery door on the A20-Mini, allowing it to house two NP-BX1 cells at once. This results in a dramatic increase in operating time—perfect for long-form productions, live events, or on-location shoots where uninterrupted wireless transmission is a must.

Compact Form Factor Adds Runtime Without Bulk
Even with dual batteries, the A20-Mini remains impressively small. The adapter increases only the depth of the unit, keeping the height and width the same. This means your existing belt clips, pouches, or mounting solutions still work without modification, offering a seamless upgrade to longer power without disrupting your rig setup.

Quick-Swap Design for Fast Transitions Between Power Modes
With the upgraded hinge installed on your A20-Mini, swapping between the standard battery door and the BatteryDoubler takes only seconds. This tool-free process allows you to configure your transmitters on the fly, based on the demands of the session or talent preferences, adding valuable flexibility to your wireless workflow.

Supports Dual Charging Through USB-C or PowerStation-8M
When connected to a USB-C power source, both NP-BX1 batteries charge simultaneously—eliminating the need to remove them or charge individually. The A20-BatteryDoubler is also fully compatible with the Sound Devices PowerStation-8M, allowing batch charging, timecode syncing, and file transfer of multiple units at once—even when the BatteryDoubler is attached.

Water-Resistant for Demanding Production Conditions
The design includes a secure door enclosure that helps protect against moisture and sweat, making it suitable for use in challenging environments. Whether you're on location in humid climates or working on high-energy sets, the BatteryDoubler maintains the same robust environmental sealing as the A20-Mini.

Available as an Upgrade Kit for Existing A20-Mini Users
If you already own an A20-Mini, Sound Devices offers an upgrade package that includes both the necessary hinge modification and the BatteryDoubler itself. This factory-authorized upgrade allows you to take full advantage of the swappable battery door system without needing to purchase a new transmitter.