The Hahnel Modus Extreme Battery HLX-MD1 is an ultra-high capacity powers the MODUS 600RT Speedlight. The high-quality lithium-ion cells hold a stable voltage of 10.8V, and are capable of more than 500 charge/discharge cycles. The battery is designed to provide a flash recycle time of just 1.5 seconds, and is shockproof for up to 3 meters.
