TECHNOLOGY FOCUS - ELECTRONICS - Preferred Electrode: The electrode is wedge-shaped, where the electrode further comprises a top side and a bottom side, the top side being of a greater width than the bottom side, thus forming a wedge-shape. The electrode comprises one or more grooves or the like traversing from the top side to the bottom side. The side of the electrode comprises one or more grooves or the like traversing the side longitudinally or latitudinally. The aluminum electrode comprises a set of grooves or the like. The grooves or the like are substantially parallel, where the grooves or the like have a width of 1-12 mm and a depth of 0.5-4 mm. The distance between the grooves or the like is 4-5 mm. The grooves or the like are V-shaped grooves. The V-shaped grooves have a width of 1.5-4 mm. The V-shaped grooves have a depth of 1.5-3 mm. The aluminum electrode comprises one or more apertures between the two sides of the electrode, where the apertures are longitudinal or latitudinal slots. The slots comprise 5-10% of the area of one side of the electrode. The apertures are substantially circular, where the substantially circular apertures comprise 10-12% of the area of one side of the electrode. Moreover, the aluminum electrode comprises a tin dopant, and a further dopant selected from one or more of the group consisting of: gallium, indium, thallium and phosphorus. The further dopant is present in an amount of up to 0.05% w/w. Alternatively, the aluminum electrode for use in an aluminum-air fuel cell, the aluminum electrode comprises a tin dopant, and a further dopant selected from: gallium, indium, thallium and phosphorus. The further dopant is present in an amount of up to 0.05% w/w. Preferred Fuel Cell: The aluminum-air fuel cell comprises two air cathodes having the aluminum anode located between it, and substantially parallel to it. The inter-electrode gap between the aluminum anode and the adjacent air cathodes is 1-2 mm. The aluminum-air fuel cell comprises two air distributors having the two air cathodes and the aluminum anode located between it, and substantially parallel to it. The gap between the air distributors and the adjacent air cathodes is 4-5 mm. The aluminum-air fuel cell further comprises an electrolyte, the electrolyte comprising a compound selected from: group I hydroxides, including sodium hydroxide and potassium hydroxide; aluminum hydrate (hydrargyllite); and group I halides, including sodium chloride but excluding sodium fluoride. The electrolyte further comprises a seeding agent selected from: group I phosphates, including sodium phosphate; group I sulfates, including sodium sulfate; group I halides, including sodium fluoride but excluding sodium chloride; and group I carbonates, including sodium bicarbonate. The electrolyte comprises at least one of sodium hydroxide and potassium hydroxide in a concentration of 4-8 M. Alternatively, the aluminum-air fuel cell comprises an aluminum anode and two air cathodes located in an electrolyte chamber, the aluminum anode being located between the two air cathodes, and substantially parallel to it, where the inter-electrode gap between the aluminum anode and the adjacent air cathodes is 1-2 mm. In a second alternative case, the aluminum-air fuel cell comprises an aluminum anode and an air cathode located in an electrolyte chamber, and an electrolyte where the electrolyte further comprises a seeding agent selected from: group I phosphates, including sodium phosphate; group I sulfates, including sodium sulfate; group I halides, including sodium fluoride but excluding sodium chloride; and group I carbonates, including sodium bicarbonate. Preferred Battery: The battery further comprises a filter configured to remove suspended solids, the filter being fluidly connected to the electrolyte chamber, where the filter is a cross-flow filter. The battery further comprises a precipitator configured to precipitate hydrargyllite, the precipitator being fluidly connected to the electrolyte chamber. The precipitator comprises a hydrargyllite seeding agent for promoting the precipitation of hydrargyllite. The battery comprises a reserve power source electronically attached to the battery for providing power to a load while the aluminum-air fuel cells are inactive, and further comprising a charging mechanism configured to recharge the reserve power source using power supplied by the aluminum-air fuel cells when active. The battery comprises an activation mechanism configured to activate the aluminum-air fuel cells to power the load, after a period of supplying power from the reserve power source. The battery is pivotally mounted on a mounting bracket assembly. Alternatively, the battery comprises two or more aluminum-air fuel cells and a filter, the aluminum-air fuel cells comprises an aluminum anode and an air cathode located in an electrolyte chamber, where the filter is fluidly connected to the electrolyte chamber, and is configured to remove suspended solids from the electrolyte. In a second alternative case, the battery comprises two or more aluminum-air fuel cells, the aluminum-air fuel cells comprising an aluminum anode and an air cathode located in an electrolyte chamber, where the battery is pivotally mounted on a mounting bracket assembly. The battery further comprises a filter where the filter is fluidly connected to the electrolyte chamber, and is configured to remove suspended solids from the electrolyte; and an activation mechanism configured to initiate the aluminum-air fuel cells, and being electronically attached to it. Preferred Method: Operating the battery comprising the aluminum-air fuel cell comprises activating the aluminum-air fuel cell using a reserve power source; pre-heating the electrolyte; adding a seeding agent to the electrolyte; oscillating the flow of electrolyte to inhibit flocculation of precipitates in it; monitoring the output of the battery and shutting down the aluminum-air fuel cells when the output falls below a preset threshold value; switching on a reserve power source when the aluminum-air fuel cells are shut down; restarting the battery using the reserve power source; and recharging the reserve power source using the battery. The air flow is provided at a rate of 1-3 liters per minute. The electrolyte flow is provided at a rate of 0.5-2.5 liters per minute. EXAMPLE - No suitable example given.