Lithium-ion batteries also known as Li-ion batteries are a rechargeable type of battery. With lithium-ion batteries, the lithium ion moves between the anode and the cathode. The lithium ion moves from the anode to the cathode whilst it is discharging and when charging it moves in reverse, from the cathode to the anode. Lithium-ion batteries are very often used in consumer electronics, and are one of the more popular types of battery for portable electronics. Lithium-ion batteries have one of the best energy-to-weight ratios, a slow loss of charge and no memory effects, and in addition to consumer uses, lithium-ion batteries are also becoming more popular for, defence, aerospace and automotive applications, because of their high density. However some kinds of mishandling may cause lithium-ion batteries to explode. Uses for lithium-ion batteries can include children’s toys, laptops, camcorders, mobile phones and some battery powered vehicles.