The Bowens Large Travelpak Battery for the Gemini Monolight is part of the Travelpak DC (battery) location system which allows operation of AC/DC Gemini 200 or 400 monolights when an AC electrical source is not available.

The battery provides (when connected to the required Control Panel) 750 full power flashes with the Gemini 200 and 370 full power flashes with the Gemini 400. Additionally the batteries are hot-swappable, so you can keep shooting with a fresh battery while you charge the depleted one independently.