EXTENDED BATTERY LIFE - Powers your Profoto B1 500 AirTTL flash for extended shoots, ensuring you capture every moment without interruption, maximizing your creative potential. RAPID CHARGING CAPABILITY - Fully charges your B1 battery in just 1 hour, minimizing downtime and keeping you ready for any spontaneous photo opportunities or studio sessions. UNIVERSAL VOLTAGE COMPATIBILITY - Designed with 100-240VAC voltage, making it ideal for international travel, ensuring your Profoto B1 is always powered, no matter the location. SEAMLESS INTEGRATION - Specifically designed for the Profoto B1 500 AirTTL Off-Camera Flash, guaranteeing optimal performance and reliability, enhancing your workflow.