Godox CP-80 CP80 CP-80N Compact Power Battery Pack for Nikon SB800 SB900 - High-performance external battery pack for speedlite provides sufficient and stable power with higher recycling speed and more flashes; - Compact, portable, and easy to connect with speedlite; - Secure and reliable with low-power and overheat indication; - Faster recycling time and more flashes between a battery change; - Excellent for event and wedding photography.