The Westcott FJ Pro AC/DC Battery is designed to deliver reliable power with 550+ full-power flashes per charge for the FJ400 II strobe and 250+ flashes for the FJ800, making it an essential addition to your lighting setup. This 74Wh, 2500mAh, 29.6V Lithium-ion battery offers fast 1.5-hour recharge times and AC/DC flexibility with built-in trickle-charge functionality to keep you shooting without interruptions. LED charge indicator lights provide quick power-level updates, while its lightweight 1.1 lbs (0.5 kg) design ensures portability. Complete with a power adapter and a 9.5’ (2.9 m) power cable, the FJ Pro is the ultimate compact solution for dependable performance.