Westcott FJ400 400Ws Strobe with AC/DC Battery

Product #:
Manufacturer #:
  • 400 watt-second AC/DC strobe
  • Compatible with the Westcott FJ-X2m Universal Wireless Trigger and Canon RT system
  • 480+ full-power flashes per charge
  • 0.05 to 0.9 second recycle time
  • Removable AC/DC lithium polymer battery
  • Color temperature stability of 5500K (±150K) across entire energy range
  • High-Speed Sync up to 1/8000s, TTL, and Rear Curtain Sync capable
  • Continuous Capture up to 20 frames per second
  • 6 groups and 31 wireless channels
  • 9 F-stop energy range in 0.1 and 1.0 increments
  • Firmware upgradeable via the included USB-C cable
Our Price: $599.90

Earn 1200 U-REWARDS Loyalty Points

In Stock

Pickup now at Fairfield, NJ

No sales tax outside of New Jersey

Free Shipping (Continental US Only)

Free Shipping

We offer Free Shipping (7-10 Day delivery) for this item when ordered through our Web Site.

Free shipping is for the 48 Contiguous States only (PO Boxes, FPO/APO, Hawaii, Puerto Rico, Alaska, and Guam excluded).


Westcott continues to push the envelope with the introduction of the FJ400 400Ws Strobe with AC/DC Battery. This version of the flash head has a power cord with a plug that's designed for use in the US and North America. The flash head recycles in just 0.9 seconds at full power - an impressive spec for a battery-powered light. Its 9-stop power range makes it readily adaptable to a variety of situations, as do High Speed Sync, Rear Curtain Sync, and TTL capability. Speaking of TTL, the FJ400 radio receiver is compatible with many Canon, Nikon, Sony (with adapter), FUJIFILM, Panasonic Lumix, and Olympus cameras, as well as the Canon RT flash system. With separate purchase of the FJ-X2m Universal Wireless Trigger, you can make power and exposure compensation adjustments at distances up to 985'. The wireless system offers 16 channels with 10 groups to prevent interference with other photographers or to shoot several individual setups.

The FJ400 runs on a powerful, removable 14.8V, 4400mAh lithium-ion polymer battery that will give you 480 full and thousands of low-power flashes on a 2.5-hour charge. The battery has LED status indicators to keep you appraised of remaining power. A 20W LED modeling light is employed for minimal power drain. Alternatively, when you're shooting in the studio you can run the flash head with AC current using the included adapter. The FJ400 ships with a magnetic 5.5" reflector with three CTO filters to match other fixtures, warm ambient light conditions, or just for creative expression. A magnetic diffusion filter is included to soften the output, as is an insert that allows use of any of Westcott's Rapid Box Switch softboxes. A custom-made travel case is also provided for storage and transport.

Wide Wireless TTL Compatibility

The FJ400's built-in TTL receiver is compatible with many Canon, Nikon, Sony (with adapter), FUJIFILM, Panasonic Lumix, Olympus cameras, and the Canon RT flash system. Make adjustments to the FJ400 from distances up to an impressive 985' with the separately-purchased Universal Wireless Radio Trigger.

Rechargeable, Removable, Powerful LiPo Battery

The FJ400's 14.8V, 4400mAh lithium-ion polymer battery is a removable power source that will provide 480 full power flashes on a 2.5-hour charge. LED charge status lights keep you appraised of the battery's remaining power. Alternatively, when shooting in the studio, you can power the light with the included AC adapter.

Product Reviews

There are no reviews for this product.

Write a review


Detailed Specifications
Weight: 5.4 lbs
Physical Specifications
Dimensions: 11.5" (l) x 4.3" (w) x 4.8" (h)
The measurements of an object.

View All Attribute Definitions

Brand: FJ Westcott
Brand: Westcott
Lighting Specifications
Color Temperature: 5500K ± 150K
Mount Type: Bowens S Type
Maximum Wattages: 400 Ws
Maximum Wattages:
Maximum Wattages

View All Attribute Definitions

Operating Voltage: 100-240 VAC, 50/60 Hz, 1.6A
Working Range: 985' (Radio)

In The Box

With a Purchase

  • FJ400 Strobe
  • FJ400 AC/DC Lithium Polymer Battery 
  • FJ400 Glass Dome 
  • FJ400 Magnetic Gel Set (5.5" CTO, 1/2-CTO, Window Green, Diffusion, Gel Frame) 
  • FJ400 AC Power Adapter & Cord (US/CA Plug)
  • FJ400 Magnetic Reflector (Bowens, 5.5")
  • USB-C To USB-A Cable
  • Medium Gear Case
  • Switch Insert (FJ400, Bowens, Godox)

With a Rental

  • Westcott FJ400 Strobe Light
  • Protection Cap
  • Reflector
  • Gel Set
  • Battery
  • AC Adapter
  • Carrying Case

You May Also Like

Light Stands & Mounts

Lighting Accessories