Batteries play a crucial role in our daily lives, powering a wide range of devices we use regularly. Once their lifespan ends, however, they become waste. Everyday items such as radios, wall clocks, flashlights, and toys rely on batteries to function. Furthermore, lithium-ion batteries are essential for more advanced devices like mobile phones, laptops, digital cameras, and photo equipment. Aside from these portable energy sources, there are two other key systems that, while not considered regular batteries, fall under the category of accumulators and are fully rechargeable: lead-acid batteries used in automobiles and industrial accumulators.
Batteries contain hazardous metals like mercury, lead, nickel, cadmium, and lithium. These substances are highly toxic to both the environment and human health when improperly disposed of. If spent batteries are discarded in regular trash, they can release harmful chemicals into the air, water, and soil, leading to significant pollution. Therefore, it is essential to prevent waste batteries from being thrown away and ensure they are collected and recycled in an environmentally responsible manner.