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Product Highlights
  • FJ800 / FJ400 II Strobe Compatibility
  • 5000 mAh Capacity
  • 148 Wh
  • ~3 hrs Charge Time
  • Nylon / Plastic / Aluminum Material Construction
Westcott FJ ProMax Battery for FJ800 and FJ400 II Strobes Westcott FJ ProMax Battery for FJ800 an...
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Overview

FJ ProMax AC/DC Battery and Power Adapter

Unmatched Power for FJ400 II and FJ800 Strobes

The FJ ProMax AC/DC Battery sets a new standard for portable power, delivering 1,000+ full-power flashes per charge for the FJ400 II and 500+ for the FJ800. Whether you’re capturing dynamic portraits or expansive group shots, this battery offers the endurance you need for demanding projects.

Key Features:

  • Compatible with FJ400 II and FJ800 strobes
  • 1,000+ full-power flashes per charge for FJ400 II and 500+ flashes for FJ800
  • AC/DC flexibility with built-in trickle-charge capability
  • LED charge indicator lights for easy monitoring
  • 3-hour recharge time supports extended sessions

High-Capacity Battery for Extended Performance

With a massive 148Wh, 5000mAh capacity, the FJ ProMax Battery is built to support long, intensive shooting sessions. Its durable construction ensures reliability, while the 2.2 lb (1.0kg weight balances portability and durability.

Additional Features:

  • High-capacity 148Wh, 5000mAh, 29.6V battery for all-day shoots
  • Portable and compact at only 2.2 lbs (1.0 kg)
  • Over 300 charge cycles for lasting reliability
  • Includes power adapter and 9.5' (2.9 m) power cable

Reliable Recharge for Uninterrupted Sessions

Recharging in just 3 hours, the FJ ProMax Battery minimizes downtime, allowing you to stay focused on your shoot. LED charge indicator lights on the side of the strobe make it easy to monitor battery levels, so you’re never caught off guard.

AC/DC Flexibility for Maximum Convenience

The FJ ProMax Battery features built-in trickle-charge functionality, keeping your equipment powered and ready during extended sessions when the battery level is above 25%.

What's Included

FJ ProMax AC/DC Battery
Power Adapter & Cord

Reviews

Product Specifications

FJ ProMax AC/DC Battery and Power Adapter

 Battery

 
Flasher Per Charge FJ400 II: 1,000+ at Full Power
FJ800: 500+ at Full Power
Battery Type FJ ProMax AC/DC Li-ion Battery
Battery Capacity 148Wh, 5000mAh
Battery Voltage 29.6V
Charge Power DC 33.6V, 2A
Battery Removable Yes
Charge Time ~3 Hours
Charge Cycles 300+ (@80% after 300 cycles)
AC Power Requirement Battery Level ≥ 25%

Electrical

 
Battery Type AC/DC Lithium-Ion
Cable Port Barrel (Charging)
Operating Temperature 32° to 113° (0° to 45°C)
Power Cord 9.5' (2.9m)
Plug Type Type B (US)
Power Source 100-240 VAC, 50/60 Hz 1.5A Max
Certifications FJ ProMax Battery: CE, RoHS
AC Adapter: CE, cETLus, RoHS

General

 
Compatibility FJ800 Strobe; FJ400 II Strobe
Dimensions 4.2 × 3.9 × 2.1 in. (10.7 × 9.9 × 5.3 cm)
Packed/Folded Size 13.7 × 12.5 × 7.4 in. (34.8 × 31.8 × 18.9 cm)
Weight 2.2 lbs. (1.0 kg)
Material Construction Nylon, Plastic, Aluminum, Rubber, Electrical Components

Questions & Answers

Westcott FJ ProMax Battery for FJ800 and FJ400 II Strobes

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