The cayman Aquasub is powerful and light weight.
58 pound thrust 24-volt motor provides the most power and longest run time. Up to 90 minutes of run time under typical snorkeling use. Rugged Polyethylene Body - Impact proof, UV resistant so it won’t fade. Bright High-visibility Color. Magnetic Switch – Hold the switch and you’re flying through the water, then release it, to glide to an effortless stop. If you let go, the AquaSub stops running. The Battery Condition Indicator is like the “Fuel Gauge" for your AquaSub.
As with any rechargable battery (110v)it depends on how you maintain them. They should be discharged before fully charging them to maintain maximum life. It is very hard to guess the battery life but I would say the battery would take up to 100 charges.