During night dives you can almost use the cobalt as your flashlight ;-) Inside overhead environments with 0 light, the cobalt cuts through the dark! Amazing in low light!!!
Battery life is very good. One of my guys dove 7 days x2 diver per day (1:15-1:30 bottom time per dive) without recharging! Another one of my AI’s dove 4 days in FL 2+ dives per day with all bottom times over 1 hour and he told me there was still 40% .