Profoto B20 Duo Kit

Problem
Photographers juggling multiple shoots need a reliable, high-power flash that adapts seamlessly between studio and location work without cumbersome setups.

Solution
The Profoto B20 Duo Kit delivers 500Ws of TTL-enabled flash power in a compact, battery-powered package. Dual heads unlock simultaneous on-camera and off-camera setups, streamlining workflows from portrait sessions to event coverage.

Specs

Benefits

• Portable Power: Shoot 220 full-power bursts per charge for on-location reliability

• TTL Accuracy: Automatic exposure adjustments for fast-paced shoots

• Modular Storage: Quick-swap B-mount modifiers customize light quality

• Rear & Side Access: Control panel orientation ensures easy handheld operation

• Use Cases: Urban street photography, travel shoots, event coverage, portrait studios

• Compact, robust and lightweight
• Profoto ECO mode - For maximized longevity
• Rubberized surface - For easy setup in any locations
• Optional handle - For easier handling
• Sync port - For wired triggering
• Powerful 40W continuous LED-light with adjustable brightness and color temperature
• User exchangeable flash tubes
• 11-stop power range
• Compatibility with 120+ Profoto light shaping tools including RFi-range
• AirX built-in

• Flash Energy range 11 f-stops (0.25-250 Ws)
• Flash Max energy 250 Ws
• Energy control increments 0.1 f-stops (0.1-10)
• Recycling time: Eco Mode: 0.01-1,1 s Boost/Freeze Mode: 0.01-1.2 s
• Energy stability: <0.1 f-stop at energy 5.0-10 <0.2 f-stop at energy 0.1-4.9
• Flash modes: Eco (Normal), Boost and Freeze
• "Flash duration t0.1
• Eco mode: 1/500 s (10) - 1/10,800 s (0.1) Boost mode: 1/500 s (10) - 1/10,300 s (0.1) Freeze mode: 1/500 s (10) - 1/11,700 s (0.1)"
• Flash duration t0.5: Eco mode: 1/1,500 s (10) - 1/14,500 s (0.1) Boost mode: 1/1,500 s (10) - 1/15,200 s (0.1) Freeze mode: 1/1,500 s (10) - 1/38,100 s (0.1)"
• Color temperature: Eco mode: 6,000 K ±100K Boost mode: 6,000 K ±100K Freeze mode: 6,000 K (10), 9,000 K (0.1)
• F-stop @ 2m / 100 ISO
• Bare: 11 7/10 OCF Magnum: 22 3/10 Magnum: 22 9/10"
• Beam angle 66°
• Field angle 111°
• Connectors Sync 1x 3.5 mm socket (mini-phone)
• Other USB-C service port
• Power supply Profoto Li-Ion battery 4S1P
• Battery capacity: 43.2 Wh up to 400 full power flashes up to 50 min full continuous light
• Battery charger Battery Charger 3A
• Battery charging time 1.5 hour
• Operation temperature 0 °C to +35 °C +32 °F to +95 °F
• Storage temperature Store in normal indoor conditions
• Continuous light Lamp type LED
• Max luminous flux (lumen) 5,000 lm
• Max illuminance @ 1meter (lux)
• Bare: 1,700 lx OCF Magnum: 8,500 lx Magnum: 8,000 lx"
• Dimming range 100-1%
• Color temperature 2800-7000 K (+-500K)
• Color rendering index (CRI) >94
• Beam angle 63°
• Field angle 105°
• Max power 40 W
• Wireless connectivity Profoto Air-X
• Frequency band 2.4 GHz
• Supported Air functions
• Sync, TTL, HSS and remote control (Air1 and Air2)
• Number of Air channels 100 (1-100)
• Number of groups per Air Channel: 6, (TTL operation: 3 (A-C), manual operation: 3 (D-F))
• Operating range: 0.5-100 m (1.5-330 ft) with Profoto remotes* 0.1-30 m (0.3-90 ft) with Bluetooth devices *in optimal conditions up to 300 m (1000 ft)
• Supported apps for Bluetooth devices
• Profoto Camera and Profoto Control"
• Firmware update via Bluetooth
• Stand adapter Yes for standard 5/8 studs
• Umbrella mount Yes (in stand adapter)
• Weight 1.9 kg
• Warranty: 1+1 Year

Q1. What camera systems is the Profoto B20 Duo Kit compatible with?
A1. The B20 Duo Kit works with all major DSLR and mirrorless cameras. Its TTL support adapts to Canon, Nikon, Sony, Fujifilm, Panasonic, and more.

Q2. Does the kit include a warranty and what are the shipping options?
A2. Every kit comes with a two-year manufacturer warranty covering defects. Standard shipping ships within 2 business days; expedited options are available at checkout.

Q3. How does the B20 Duo Kit compare to other Profoto monolights?
A3. Compared to studio-only heads, the B20 Duo Kit offers battery-powered portability and faster recycle times (0.05–1.8 s) without bulky power packs, ideal for hybrid shooters.

Q4. How should I maintain and clean the flash heads?
A4. Wipe the housing with a damp cloth after use. Avoid solvent cleaners. Inspect mounting and sockets monthly and keep air vents clear to maintain airflow.

Q5. What sets Profoto’s B20 Duo Kit apart from other brands?
A5. Profoto’s proprietary Battery Air System ensures consistent color temperature and cycle times across all power levels, backed by a global support network.