Bolt PP-500DR Dual-Outlet Power Pack with Removable Battery

The PP-500DR Dual-Outlet Power Pack with Removable Battery from Bolt is an interchangeable battery system that is compatible with most on-camera flashes such as Nikon, Canon, Sony, Bolt, Sunpak, Vivitar, Metz, and other popular flashes. The dual outlets on the pack enable you to use two on-camera flashes at the same time, and the outlets have locking connectors to secure the power cables and prevent them from falling out. The portable lithium-ion battery is rechargeable via the included AC adapter, which takes approximately 4.5 hours to fully charge.