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| Lithium batteries work by shuttling lithium ions between the anode and cathode of the battery. The anode, source of the ions and electrons, is elemental lithium (or a lithium-containing compound) and the cathode, receptor of the ions and electrons, is a material capable of accepting lithium ions into its structure. When a battery is discharged, lithium ions flow from the anode to the cathode, accompanied by electrons. This flow of electrons is electrical current and can be used to power portable devices such as laptop computers. The battery can be charged by supplying an external electric current, which drives the lithium ions back to the anode. This charging process "resets" the anode and cathode so that the battery can once again power your laptop through a hectic day. | ||