B2 250 AirTTL
20
www.profoto.com
Technical data
Max Energy
250 Ws
Energy range f-stop
9 f-stop (2.0-10.0 ; 1/256-1/1)
Energy range Ws
1.0-250 Ws
Energy control increments
Dials are progressive, turning the dials quickly
will result in larger energy change and vice
versa.
Recycling time
0.03-1.35 s (Quick burst up to 20 flashes/
second)
Modeling light
LED 9W (Equivalent of 50W Halogen)
Mode control
Freeze (shortest flash duration) or Normal (color
balanced) mode
Flash duration Normal mode (t0.5)
1/9300 s (1 Ws) - 1/1,000 s (250Ws)
Flash duration Freeze mode (t0.5)
1/15000s (1Ws) - 1/1,000 s (250Ws)
Energy stability Normal mode
±1/20 f-stop flash to flash
Energy stability Freeze mode
±1/20 f-stop flash to flash
Color stability Normal mode
±150 K over range; ±20 K flash to flash
Color stability Freeze mode
±800 K over range; ±50 K flash to flash
Light spread with built-in reflector
70 degrees
Guide number @ 2 m, 100 ISO with
Magnum reflector
32 2/10
Battery
Model: Exchangeable Li-Ion battery 4S1P
Type: PCA1322-0000
Battery voltage
Nominal voltage : 14.4 V
Charge voltage : 16.8 V
Battery Energy / Capacity
21.6 Wh /1.5 Ah
Battery operating temperature
range
Charge: 0 °C to +45 °C (32 °F to +113 °F)
Discharge: -10 °C to +50 °C (14 °F to +122 °F)
Battery capacity
Up to 215 full power flashes
Battery life
300 charge cycles (80% capacity left)
