"The Genesis eCell, like other fuel cells, produces direct current (DC) voltage. Each eCell in a stack of eCells typically produces between 1.0 volts at no load, and as little as 0.5 volts under full load. Therefore, a series of eCells is connected together into stacks to obtain the correct range of voltage the Edison Device requires to operate on a self-contained basis. To greatly simplify matters related to delivering voltage and current in a consumer usable form, the Edison Device is configured to operate only at predefined levels of electrical output. The electrical energy produced by the Edison Device is then stored in special DC batteries. When electrical energy is needed to support a customer's needs, it is then inverted into the type of electricity delivered by utility companies.
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It is easiest to think of the Edison Device as a generator that charges batteries, which can then deliver consistent levels of voltage and amperage when needed to DC to AC inverters. The DC to AC inverters in turn deliver electricity to consumers in the same form as utility companies deliver electricity.
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The Edison Device's battery storage capacity is rated in kilowatt hours of reserve. Consumers should select a version of the Edison Device that allows them to meet their average kilowatt hours of consumption, with the Edison Device operating no more than 75% of maximum output. In addition to storing reserves of electrical energy, the batteries in the Edison Device also function as a method of seamlessly meeting periods of electrical demand that exceed the Edison Device's maximum electrical output. The batteries in the Edison Device are recharged at any time electrical demand is less than the output of the Edison Device.
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The Edison Device initially requires either outside electricity or hydrogen and oxygen gas to start the process and to develop internal reserves of electrical and gas energy. Depending on the configuration of the Edison Device offered by individual licensed manufacturers, the Edison Device typically becomes independent of outside energy within an hour. From that point on, the Edison Device is designed to retain enough reserve energy to restart itself in the event that shutdown is required for maintenance, for example, when replacing the water filters.
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In addition, a limited reserve of hydrogen gas is stored in a small, low-pressure metal hydride container, which will continue to supply gas until depleted. Depending on each customer's needs, the Edison Device will typically be configured to store enough energy for one to two days.
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There are no costs paid by potential licensees until each qualifying licensee has the opportunity to examine independent operational lab results and working devices."