This AC Power Adapter from SeaLife works with the SL98311 Charging Tray for the SL9831 Rechargeable Li-Ion Battery, which powers their Sea Dragon 1200 and 2000-Lumen Photo/Video Dive Lights. Charging time with the adapter and the tray, which is available separately, is about 170 min. The adapter features a 40" power cord and a standard 2-prong North American type plug. You can also use it with any of the international plug adapters supplied with the Sea Dragon lights. It runs on 100-240VAC power for worldwide use. It is included with the Sea Dragon lights and is offered here as a spare or replacement part.