Looking for much longer run times on your underwater cameras. We recommend the Dakota Lithium 12v 10ah battery. This battery increased the run time on our 10″ camera system from 120-minutes to 330-minutes or around 5 1/2-hours. Also the battery is only 2-pounds 14-oz greatly reducing the weight of your camera system.
https://www.dakotalithiumbattery.com/12-v-10-ah-lithium-battery