My Favorite Battery Strobe Flash

Westcott FJ400 II Touchscreen Strobe with FJ Pro AC/DC Battery (400Ws) TTL HSS AC/DC Powered 550+ Full Power Flashes (US/CA Plug)

4 Reasons to choose the Westcott FJ400 II

The carrying case makes it east to pack and travel with. Everything that you need fits easily into the bag and is securely protected.
The battery is well designed. With long lasting power and easy charging it makes off grid shooting easy and simple. The handy battery level indicator is useful for monitoring available charge.
Easy to adjust settings and see flash power. The touch screen is easy to use and makes adjustments easy and quick.
The flash power is consitent and clean. The light source is well designed to minimize distortion and unevenness.

I use the Westcott FJ400 II as my primary flash, it has made it easy to have powerful flash anywhere I need it.

Shots with the strobe:

Specifications:

Maximum Power	400Ws
Energy Range	9 F-Stops (1.56 - 400 Ws)
Flash Duration (t0.1)	Normal: 1/200 - 1/6540s, Freeze: 1/220 - 1/10800s
Flash Duration (t0.5)	Normal: 1/600 - 1/16500s, Freeze: 1/500 - 1/24000s
Recycle Time	0.01s - 0.9s
Continuous Capture	50 FPS (Camera & Power Dependent)
Color Temperature Stability	Normal/TTL: 5500K ±150K, HSS: 5500K ±300
Flash Increments	0.1-Stop and 1-Stop
Flash Modes	Manual, TTL
Exposure Compensation	±3
Modeling Lamp	LED 30W Bi-color (2700-6500K)
Sync Functions	HSS, Front Curtain, Rear Curtain, Freeze
Sync Speed	Up to 1/8000s (High-Speed)
Wireless Channels	31 (01-31)
Wireless Groups	16
Light Mount Type	Bowens Mount with 5/8” Receiver, 9mm Round Umbrella Receptacle