SWIT Electronics HB-A290B 290Wh 28.8V 10005mAh Lithium-ion B-Mount Battery with Built-In LED Flashlight

SKU: SWHBA290B MFR: HB-A290B
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Key Features

  • Enjoy extended shoots with 290Wh long battery life, ensuring your camcorder is always ready.
  • Benefit from fast charging capabilities, reaching 100W/3A to quickly power up your B-mount battery.
  • Experience reliable performance with a robust 28.8V lithium-ion battery, perfect for professional video.
  • Stay illuminated on set with the convenient built-in LED flashlight, a practical feature for any videographer.
  • Power multiple devices using the versatile USB-C 60W output, keeping all your gear charged.
  • Achieve optimal compatibility with B-mount systems, designed for seamless integration with your equipment.
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Temporarily On Backorder?Expected Availability: 11/2025
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Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

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TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Malfunction Protection

Malfunction Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.

SWIT Electronics HB-A290B Specifications

  • Color

    Black

  • Voltage

    28.8V (21.6-33.6V)

  • Capacity

    290Wh/10005mAh

  • Constant load

    250W/10A

  • Max charging current

    100W/3A fast charging

  • Mount Type

    B-mount

  • D-tap

    2x 16V regulated, 60W 3.8A load

  • USB-C

    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

  • USB-A

    10W, 5V/2A

  • Charging Temperature

    32 Degree F to 104 Degree F (0 Degree C to 40 Degree C)

  • Discharging Temperature

    -4 Degree F to -58 Degree F (-20 Degree C to -50 Degree C) (Capacity and Max Load may decrease when operating below 0 Degree)

  • Battery Info

    Required, included

  • Battery Material

    Lithium ion

  • Battery Type

    Non-universal

  • Battery Quantity

    1

  • Dimensions

    5.67 x 3.94 x 2.76" (144 x 100 x 70mm)

  • Weight

    3.35 lbs (1.52kg)

Designed For Use With:

  • B-Mount

Need Help?

For any questions about compatibility with this product, call us at 800-223-2500 or you can email us any time.

About SWIT Electronics HB-A290B

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 ALEXA35/265
The 28.8V (21.6-33.6V) high voltage matches with ALEXA35/265, Blackmagic URSA Cine 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 (Charger Not Included), 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.

SWIT Electronics HB-A290B Features

  • The B-mount battery interface is a new industry standard endorsed by ARRI
  • You can power laptop via USB-C by HB-A290B battery on the filmset
  • You can fully charge the 290Wh battery within 5.5 hours
  • The charger will take approx. 3 hours 50 minutes to fully charge 4x HB-A290B batteries

Warranty Information

This product has a limited warranty of 24 months.

Key Features

  • Enjoy extended shoots with 290Wh long battery life, ensuring your camcorder is always ready.
  • Benefit from fast charging capabilities, reaching 100W/3A to quickly power up your B-mount battery.
  • Experience reliable performance with a robust 28.8V lithium-ion battery, perfect for professional video.
  • Stay illuminated on set with the convenient built-in LED flashlight, a practical feature for any videographer.
  • Power multiple devices using the versatile USB-C 60W output, keeping all your gear charged.
  • Achieve optimal compatibility with B-mount systems, designed for seamless integration with your equipment.

What's in the box:

  • SWIT Electronics HB-A290B 290Wh 28.8V 10005mAh Lithium-ion B-Mount Battery with Built-In LED Flashlight
  • SWIT Electronics 2 Year Limited Warranty