Product Description
Westcott FJ ProMax AC/DC Battery & Power Adapter (FJ800 / FJ400 II / FJ250) - 5052
The FJ ProMax AC/DC Battery and Power Adapter is a high-capacity power solution designed to keep your Westcott FJ lighting system running through extended studio or location shoots. It delivers reliable, consistent power whether you’re working on battery or AC supply, making it ideal for long production days where downtime isn’t an option.
Continuous power for demanding shoots
Built for professional workflows, the ProMax system supports multiple FJ strobes and delivers high flash counts per charge. It is compatible with the FJ800, FJ400 II, and FJ250, providing a flexible power solution across the FJ lighting range.
Depending on the unit in use, it delivers:
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Up to 1400+ full-power flashes (FJ250)
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Up to 1,000+ full-power flashes (FJ400 II)
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Up to 500+ full-power flashes (FJ800)
This makes it suitable for both high-output studio work and fast-paced on-location shooting.
AC/DC flexibility with intelligent charging
The ProMax unit offers both AC and DC operation, allowing you to shoot continuously while simultaneously managing battery power. Built-in trickle-charging ensures the battery is maintained efficiently during use, reducing downtime between sessions.
LED indicators provide clear, real-time charge status so you always know your remaining power at a glance.
High-capacity, production-ready design
Despite its performance, the unit remains portable and practical for location work. The high-capacity battery is designed for long sessions, offering reliable output across an entire shoot day.
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High-capacity 148Wh / 5000mAh / 29.6V battery
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Over 300 charge cycles for long-term reliability
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Compact and portable at approx. 1.0 kg (2.2 lbs)
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Includes 2.9m (9.5 ft) power cable and adapter
Key Features
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Compatible with FJ800, FJ400 II, and FJ250 strobes
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AC/DC operation for continuous shooting flexibility
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High-capacity 148Wh lithium battery system
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Up to 1400+ flashes (FJ250), 1000+ (FJ400 II), 500+ (FJ800)
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Built-in trickle charging support
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LED charge status indicators
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Over 300 charge cycles
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Portable, production-ready design
What’s in the Box
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FJ ProMax AC/DC Battery & Power Adapter unit
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Power adapter
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9.5 ft (2.9 m) power cable
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User documentation / instructions
Payment & Security
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