Audioroot eSmart BG-DH MKII Power Distributor
The Audioroot eSmart BG-DH MKII Power Distributor is a next-generation DC power distributor designed specifically for field sound professionals. As the direct successor to our groundbreaking eSMART BG-DH—the original smart battery distributor introduced in 2009—this compact powerhouse builds upon a legacy that revolutionized portable audio power management.
Before the BG-DH, production sound recordists relied on standard batteries, often without any visibility into how much energy remained—an unacceptable compromise for mission-critical work. The BG-DH changed that forever, introducing real-time battery intelligence through SMbus smart battery technology. The MKII version pushes the concept even further with a refined, more compact design, increased functionality, and superior reliability.
Key Features
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Real-Time Battery Monitoring
At a glance, view all critical battery data on a sunlight-readable OLED color screen:-
Remaining capacity (%)
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Estimated runtime (hh:mm)
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Voltage (V)
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Current draw (A)
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Battery temperature (°C)
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Charge/discharge cycle count
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Ultra-Compact Form Factor
Measuring just 65 x 50 x 30 mm and weighing only 130 grams, the BG-DH MKII fits effortlessly into any ENG sound bag. All cabling routes downward to optimize space and workflow. -
Robust and Flexible Output Options
Equipped with 6 Hirose locking outputs, the BG-DH MKII supports a wide range of configurations:-
1 unfused SMbus passthrough output
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3 fused outputs (protected by 2.5A re-settable Polyswitch fuses)
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2 non-fused auxiliary outputs
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Powerful Visual Alerts
A blinking red LED alerts you when battery capacity drops below 10%, helping prevent sudden power loss. -
Switchable Output Control
Separate locking switches let you independently toggle 4 main outputs and 2 auxiliary outputs, giving you total control over your power distribution. -
Plug-and-Play Smart Battery Integration
Seamless compatibility with all Audioroot eSMART lithium batteries. Simply plug in to activate intelligent data communication via the SMbus. -
OLED Color Display
The integrated 96 x 64 pixel OLED display is bright, colorful, and offers a wide 180° viewing angle—perfect for viewing battery stats from any position. -
Efficient, Low-Power Operation
With extremely low internal power consumption, the BG-DH MKII maximizes your battery’s autonomy without sacrificing visibility or control. -
Designed for Mobility
Includes a durable belt clip, perfect for fast setups and field use. The Hirose locking connectors provide robust, secure connections in all conditions.


