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The Westcott FJ Mini AC/DC USB-C Rechargeable Battery is a compact power solution designed for both the Westcott FJ100 Strobe and FJ100 Speedlight. Its interchangeable design means the same battery can be used across compatible FJ100 lights, helping simplify battery management when working with multiple units. The 7.4V, 3200mAh, 23.68Wh lithium-ion battery provides up to 700 full-power flashes with the FJ100 Strobe or up to 575 full-power flashes with the FJ100 Speedlight.
USB-C charging provides a full recharge in approximately 2.3 hours, while integrated LED indicators make it easy to monitor battery status. Built-in AC/DC trickle-charge capability also allows compatible FJ100 lights to operate while charging when the battery level is above the required threshold.
The FJ Mini battery is designed for photographers and creators using compatible Westcott FJ100 lighting. It is useful as an additional or replacement battery for location work, weddings, events, portraits and longer studio sessions where keeping a charged power source available can reduce interruptions.
One battery for FJ100 lights
The FJ Mini is interchangeable between the compatible FJ100 Strobe and FJ100 Speedlight, reducing the need to manage separate battery types when both lights are part of the same setup. This is particularly practical for multi-light location kits, where spare batteries can be shared between compatible units as required.
Extended flash capacity
With the FJ100 Strobe, the battery provides up to 700 full-power flashes. When used with the FJ100 Speedlight, it provides up to 575 full-power flashes, giving photographers substantial portable runtime between charges.
USB-C charging
The battery features a USB-C input and recharges in approximately 2.3 hours. USB-C connectivity provides a straightforward charging solution without requiring a separate proprietary charging dock.
AC/DC trickle-charge capability
Built-in AC/DC trickle-charge functionality allows compatible FJ100 lights to continue operating while the battery is charging, provided the battery level is above the required threshold. This can help minimise downtime during longer studio or location sessions where access to external power is available.
Compact design
At just 2.7 x 1.7 x 1.7" / 6.9 x 4.3 x 4.3 cm and 4.1 oz / 117 g, the FJ Mini is compact enough to carry additional batteries without adding excessive bulk to a lighting case.
For photographers already working with FJ100 lighting, the FJ Mini provides a practical way to add additional runtime without introducing another battery format. Compatibility across the FJ100 Strobe and Speedlight makes spare batteries easier to allocate between lights, while USB-C and AC/DC charging options provide flexibility both on location and in the studio.
| Battery Type | Proprietary battery for Westcott FJ100 Strobe / FJ100 Speedlight |
| Battery Chemistry | Lithium-ion |
| Capacity | 3200mAh / 23.68Wh |
| Output Voltage | 7.4V DC |
| FJ100 Strobe Performance | Up to 700 full-power flashes |
| FJ100 Speedlight Performance | Up to 575 full-power flashes |
| Charge Time | Approximately 2.3 hours via USB-C |
| Charge Cycles | 300 |
| Power Input | 1 x USB-C female input |
| Indicator | LED status light |
| Accessory Mounting Thread | No |
| Dimensions | 2.7 x 1.7 x 1.7" / 6.9 x 4.3 x 4.3 cm |
| Weight | 4.1 oz / 117 g |
| Operating Conditions | 32 to 113°F / 0 to 45°C |
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UK Standard (Free for orders over £150.00 offer excludes Northern Ireland & Additional Shipping Fees) |
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We are able to ship from our UK based warehouses to many countries around the world. Click below to check shipping rates to your country.
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We are able to ship from our UK based warehouses to many countries around the world. Click below to check shipping rates to your country...
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