*2.5. Fire-Prevention Strategies*

The incredible spread of lithium-ion battery packs seen in recent years is easily understandable if we think about their specific capacity, energy density, and power density. All these characteristics are higher in Li-ion batteries rather than in the outdated batteries, but this new technology leads to some issues. One of the hardest challenges in the use of lithium-ion batteries is to find valid methods to prevent or face the so-called thermal runaway. It is a dangerous phenomenon during which the temperature rises and exothermic reactions are triggered, and these could lead to fires or explosions. There may be several causes that generate the thermal runaway: short circuits, battery overcharging, and design and manufacturing defects [49].
