HB-A290B 290Wh 28.8V B-mount Battery Pack

›  28.8V ARRI Standard B-mount

›  290Wh/10.05Ah high capacity

›  250W, 10A constant high load

›  100W/3A fast charging

›  D-tap 16V reg. output ×2

›  USB-C 60W input and output

›  USB-A 5V/2A output

›  OLED power info display

›  Built-in LED torch

›  Strong 1.2m drop off proof

›  Multiple circuit protections


ARRI Standard B-mount Battery

The B-mount battery interface is a new industry standard endorsed by ARRI and the wider industry with high voltage support and reliable lock system especially for filmmaker.

28.8V for ALEXA35

The 28.8V (21.6-33.6V) high voltage matches with ALEXA35 and all ARRI cameras and lights, and high power cine equipments, reduce current effectively, reliable and longer life time.

290Wh Large Capacity

HB-A290B battery has 290Wh / 10.05Ah large capacity, and at least 250W / 10A constant high load for cine cameras and devices.

D-tap, USB-A and USB-C

HB-A290B still provides with
2x D-tap of regulated 16V, 60W/3.8A load;
1x USB-A 5V/2A;
1x USB-C 60W input and 60W output

USB-C 60W Power Output

You can power laptop via USB-C by HB-A290B battery on the filmset. Supports 5V 3A, 9V 3A, 12V 3A, 15V 3A and Max 20V 3A, BC1.2, PD2.0/3.0, QC2.0/3.0, FCP, SCP multiple protocols.
(For Macbook Air/13, Macbook Pro 13/15/16, Huawei Matebook E/12/X13/XPRO, Thinkpad, HP, ASUS, Dell and almost all laptops with USB-C ports)

USB-C 60W Charging Input

HB-A290B battery can be charged by USB-C charger, supports PD 15V 3A and 20V 3A, which means you can fully charge the 290Wh battery within 5.5 hours.

OLED Power Info Display

HB-A290B battery provides an OLED screen to display battery status and power information, includes power percentage, remaining running time, USB-A / USB-C status, and protection warning code if any abnormal detected.

100W Super Fast Charging

You can charge 4x HB-A290B simultaneously on SWIT PC-P461B B-mount charger, at 33.6V 3A, 100W super fast charging. The charger will take approx. 3 hours 50 minutes to fully charge 4x HB-A290B batteries.

LED Torch

You can double press the Power Check button to switch on LED torch on the rear side of the battery, to help you to find B-mount plate in dark production environment.
Double press the Power Check button again to switch the light off, and it will be automatically switched off after 30 seconds.

1.2 meters Drop-off Proof

HB-A290B battery can survive from 1.2 meters drop-off at any angles, strong and reliable for filmmakers.



28.8V (21.6-33.6V)



Constant load

250W / 10A

Max charging current

100W / 3A fast charging

Mount Type


D-tap ×2

16V regulated, 60W 3.8A load


60W out  5V/9V/12V/15V/20V(Max) 3A

BC1.2, PD2.0/3.0, QC2.0/3.0, FCP, SCP

60W in 15V/20V(Max) 3A


10W, 5V/2A

Charging Temperature

      Discharging Temperature-20°C-50°C (Capacity and Max Load may decrease when operating below 0°)

Net weight

Net 1.52kg; With package1.6kg


Basic Package




  • PC-P461B

    4x100W Super Fast B-mount Charger

    3h50m fully charge 4x 290Wh batteries, 3.5-inch color LCD screen

  • KA-A30B

    B-mount Hotswap Plate for SXT/LF/65

    Install on ARRI ALEXA SXT/LF/65 install, Run 2min at 200W, 120s countdown display

  • KA-R30B

    B-mount Hotswap Plate for MINI / MINI LF

    200W high load, 2 minutes hot-swap, countdown seconds display, CNC housing

  • KA-R31B

    B-mount Hotswap Plate for MINI / MINI LF

    200W high load, 2 minutes hot-swap, SDI 1-2 with isolater, CNC housing

  • KA-B30B

    B-mount to B-mount Hotswap Plate

    200W high load, 2 minutes hot-swap, countdown seconds display, CNC housing


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