For videographers with weight as the highest priority, the Dionic is the choice. The Dionic 90 weights only 1.7 lbs. and is the highest capacity lithium ion battery which can be legally transported without restriction under the IATA and DOT safety regulations. It will handle a maximum load of 90w, is rated for 90w hours. Nominal runtimes range from six hours at 15w to 1.75 hours at 50w. Can be used with PowerCharger and Titan series chargers only.