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SWIT HB-A290B 290Wh B-Mount Battery
Professional B-Mount Power for Modern Cinema
Built for demanding film and production environments, the SWIT HB-A290B is a high-capacity 290Wh B-mount battery designed to power professional cinema cameras, lights, and other high-power equipment. With a 28.8V platform, versatile power outputs, USB-C charging, and a rugged construction, it delivers dependable power for filmmakers on set and in the field.
 
ARRI-Standard B-Mount Interface
The HB-A290B uses the B-mount battery interface, an industry-standard platform adopted across professional cinema equipment, including ARRI and Blackmagic Design URSA Cine systems. Its high-voltage architecture and secure locking design provide reliable power delivery for demanding production applications.
 
28.8V High-Voltage Power
With a nominal voltage of 28.8V and an operating range of 22–33.6V, the HB-A290B is designed for high-voltage cinema cameras, lights, and other professional equipment. Higher voltage helps reduce current draw, supporting efficient power delivery and dependable operation.
 
290Wh Capacity for Long-Lasting Power
With 290Wh / 10.05Ah of capacity and continuous output of at least 250W / 10A, the HB-A290B provides substantial power reserves for professional cinema equipment, helping minimize battery changes during production.
 
Versatile Power Outputs
Beyond the B-mount output, the HB-A290B provides multiple convenient power options:
2× D-tap outputs: Regulated 16V, up to 60W / 3.8A
1× USB-A: 5V / 2A
1× USB-C: Up to 60W input and output
This makes the battery a versatile power source for cameras, accessories, monitors, wireless equipment, and other production devices.
 
60W USB-C Power for Laptops and Devices
The USB-C output can deliver up to 60W, allowing you to power compatible laptops and mobile devices directly from the battery on set. It supports multiple charging protocols, including PD 2.0/3.0, QC 2.0/3.0, BC1.2, FCP, and SCP, with output profiles up to 20V / 3A.
 
Convenient USB-C Charging
The HB-A290B can also be charged directly through its USB-C port using a compatible PD charger. Supporting 15V / 3A and 20V / 3A input, it can be fully charged in approximately 5.5 hours.
 
For faster professional charging, the SWIT PC-P461B B-mount charger can charge four HB-A290B batteries simultaneously at up to 100W per battery, with a full four-battery charge taking approximately 3 hours and 50 minutes.
 
OLED Power Information Display
A built-in OLED display provides essential battery information at a glance, including remaining capacity, estimated runtime, USB-A and USB-C status, and protection warning codes when an abnormal condition is detected.
 
Built-In LED Flashlight
Working in dark production environments is easier with the integrated rear LED flashlight. Simply double-press the Power Check button to activate it. Double-press again to turn it off, or let the battery automatically switch it off after 30 seconds.
 
Built for the Demands of Production
The HB-A290B is engineered for professional use and can withstand a 1.2-meter drop from any angle, providing added durability and confidence when working in demanding production environments.
 
Power Your Production with Confidence
From cinema cameras and high-power lighting to laptops and production accessories, the SWIT HB-A290B combines high capacity, high-voltage B-mount power, versatile connectivity, fast charging, intelligent monitoring, and rugged construction in one professional battery solution.