Westcott

Westcott Battery FJ400 AC/DC Lithium Polymer Flash Battery

3.9 (22 reviews)
4400mAh1.5 lbs

Extend Your Strobe's Performance with Reliable Battery PowerThe Westcott FJ400 AC/DC Lithium Polymer Battery provides extended power for your FJ400 strobe. With over 480 full-power flashes per charge, this battery delivers long-lasting performance for on-location shooting. Brand: Westcott Model...

$174.90*
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*Price sourced from Amazon.com. Last updated:May 27, 2026.Price and availability are subject to change.

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Overview

Extend Your Strobe's Performance with Reliable Battery Power

The Westcott FJ400 AC/DC Lithium Polymer Battery provides extended power for your FJ400 strobe. With over 480 full-power flashes per charge, this battery delivers long-lasting performance for on-location shooting.


  • Brand: Westcott
  • Model: Battery
  • Compatibility: Westcott FJ400 Strobe
  • Battery Type: Lithium Polymer
  • Capacity: 65Wh, 4400mAh
  • Voltage: 14.8V
  • Flashes per Charge: 480+ at Full Power
  • Recharge Time: 2.5 Hours
  • Charge Cycles: 300+
  • Weight: 1.5 lbs (.68 kg)

Key Features

14.8V 4400mAh AC/DC lithium polymer battery compatible with the Westcott FJ400 strobe

Provides over 480+ full-power flashes on a single charge and rated for 300 charge cycles

Provides both DC power for on-location freedom and AC trickle-charge performance when the state of charge is above 25%

Compact and lightweight at 1.5 lbs (.68 kg)

Quickly interchangeable and charges fully in just 2.5 hours with rear battery level LED indicator lights that provide real-time charge status

Specifications

Battery Type
Lithium Polymer
Voltage
14.8V
Capacity
4400mAh
Compatibility
Westcott FJ400 strobe
Full Power Flashes per Charge
480+
Charge Cycles Rated
300
Weight
1.5 lbs (.68 kg)
Full Charge Time
2.5 hours
Power Modes
DC, AC trickle-charge (above 25%)
Indicators
Rear battery level LED

Pros & Cons

👍 Pros

  • Offers over 480 full-power flashes on a single charge for extended shooting sessions
  • Weighs only 1.5 lbs (.68 kg), making it convenient for on-location and portable use
  • Charges fully in a rapid 2.5 hours, minimizing downtime between uses
  • Features LED indicator lights that clearly display the real-time battery charge status
  • Supports both DC power for mobile use and AC trickle-charge when above 25% capacity

👎 Cons

  • Provides AC trickle-charge functionality only when the battery's state of charge is above 25%
  • Rated for 300 charge cycles, indicating a finite lifespan for its optimal performance
  • Specifically designed for compatibility with the Westcott FJ400 strobe, limiting its universal use
  • Lithium polymer battery may require specific handling and charging procedures for longevity
  • The compact size means a balance between capacity and portability, which might not suit all needs

Frequently Asked Questions

This Westcott FJ400 battery is designed to provide over 480 full-power flashes on a single charge, supporting extended photography sessions.
The battery charges completely in approximately 2.5 hours, allowing for quick turnaround and reduced waiting periods between uses.
No, this 14.8V 4400mAh lithium polymer battery is specifically designed for compatibility with the Westcott FJ400 strobe.
Yes, the battery features rear LED indicator lights that provide real-time status of the current charge level.
The battery is compact and lightweight, weighing in at 1.5 lbs (.68 kg), which makes it suitable for on-location and portable setups.
Yes, the battery is rated for 300 charge cycles, indicating its expected lifespan under normal use before potential capacity degradation.