CR2032
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38161647-CR2032
BATTERY LITHIUM 3V COIN 20MM
RATED voltage is the voltage on the nameplate - the "design point" for maximum power throughput and safe thermal operation.
Terminal type or emulation specifies how your computer and the host computer to which you are connected exchange information.
A battery is a device that stores chemical energy, and converts it to electricity. This is known as electrochemistry and the system that underpins a battery is called an electrochemical cell. A battery can be made up of one or several (like in Volta's original pile) electrochemical cells.
The most common lithium-ion cell is the 18650 (the numbers define the physical dimensions and shape as follows: 18mm in diameter, 65mm long and the 0 means it has a round cross-section) which is due to its widespread use in laptop battery packs.