AA battery
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The AA battery is a standard-size of cylindrical dry battery. They are one of the most common types of interchangable batteries in portable electronic devices. An AA battery is composed of a single el
AA cells
D, C, AA, AAA, AAAA cells, and a 9-volt battery
Panasonic Eneloop 1.2 volt NiMH rechargeable cells in AA and AAA
Nickel–cadmium battery
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The nickel–cadmium battery is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes. The abbreviation Ni–Cd is derived from the chemical symbols of nickel and
From top to bottom: "Gumstick", AA, and AAA Ni–Cd batteries
View of a vented-cell aircraft battery from the side
Eight Ni–Cd batteries in a battery pack