What is the power source for SuperVision and what is the length of its runtime?
SuperVision runs on a rechargeable lithium ion battery, like your cell phone. The big advantage of lithium ion batteries is that there is no memory like ni-cad batteries and the cycle life (the number of times the battery can be recharged) is appreciably higher. SuperVision comes with one lithium ion battery and a dual-cradle charger that can hold two batteries. Additional batteries are sold separately. The runtime is two hours.