Sea Dragon 4500F/5000F Underwater Lights LI-ION rechargeable battery The powerful 14.8V 50Wh 3400mAh rechargeable lithium ion battery powers the impressive Sea Dragon 4500 & 5000 Pro Photo/Video Lights. This battery keeps the light running for a full 60 minutes at full brightness, and 4 hours at 25% brightness. Fits the Sea Dragon 4500 & 5000 Pro Photo/Video Lights. 14.8V 50Wh 3400mAh Rechargeable Lithium Ion Battery SeaLife's Batteries have been designed to work best in SeaLife Cameras and Lights. Do not attempt to substitute the battery or charging device with other types or brands, all SeaLife battery and charger items have been tested to the full specified run time for each item. Note: Using alternate non-SeaLife spec. batteries will affect your camera a or light’s performance and can also be fire hazard.