Low power email capabilities are provided for an electronic device, such as a hand-held portable computer having capability to operate an application during a low power mode. The invention further provides sulfuric acid electrolytes including a filler, at least one chelating agent, and at least one water-soluble sulfate salt, wherein the chelating agent comprises an alkali metallated chelating agent and the water-soluble sulfate salt comprises the corresponding cation to the cation present in the alkali metallated chelating agent. A conduit for conveying the fluid is defined through a substrate includes at least one opening for allowing evaporation of the fluid. At least one of the conductive elements is coupled to a radiation pattern adjustment mechanism in the form of a switching diode or relay. The second frequency band may include a second uplink band and a second downlink band. At the time of this change, control is made so as to track a different channel between cases in which a magnetic flux increases and decreases, thereby stabilizing the control.