The power sources used in wireless devices and portable equipment are mainly lithium-ion (Li-Ion), lithium-polymer (Li-Po), nickel-metal hydride (Ni-MH) or nickel-cadmium (Ni-Cd) rechargeable batteries.
It is vital to remember that all these products contain materials that pose a risk to public health and the environment. Among these components are heavy metals such as lead, cadmium and mercury, as well as nickel, magnesium, lithium, iron, silver and acidic substances.
The environmental impact of incorrect disposal
What are the risks when laptop batteries are thrown away with general household waste?
When these toxic elements end up in the unsorted waste stream, they are sent to landfill sites. In contact with rain and the elements, they gradually dissolve and contaminate groundwater and soil.
If the waste is destined for incineration, harmful substances are released into the atmosphere, contributing to air pollution.
Specialist disposal and recycling routes
Where can users take their end-of-life laptop batteries?
Shops selling electronic equipment and petrol stations are generally required to provide collection bins for this type of waste. In principle, any retailer selling batteries and accumulators must accept similar used products for recycling.
Once collected, the batteries are transported to dedicated recycling facilities. These sites are responsible for the separation and extraction of reusable materials.
The remaining waste is neutralised in line with hazardous waste management regulations. Separating these complex substances requires specific technologies and facilities which simply cannot be replicated at a standard landfill site.
How are the recovered materials used?
- Some materials can be fed back into the production chain to be used again by manufacturers.
- Other elements, such as zinc and manganese, can be used in the production of soil improvers for agriculture or for other applications.
Safety precautions when handling used batteries
What are the prohibitions and safety rules you should follow with old rechargeable batteries?
Leave the casing intact if you’re not an expert
Even if curiosity tempts you to look inside, if you cannot guarantee safe opening it is strongly recommended that you do not tamper with the battery. An unskilled attempt can pierce an internal cell, causing serious dangers:
- Fire and explosion risk: Batteries contain flammable products and harmful gases such as hydrogen, methane and carbon monoxide. Piercing the casing releases these pressurised gases which, combined with the stored energy, can trigger a violent thermal reaction.
- Health hazards: The chemicals inside the accumulator are toxic. If the battery contains acid, contact with it can cause severe skin burns.
- Physical injury risks: Trying to force open a casing that is not designed to be opened exposes you to a real risk of injury.
Avoid heat and keep batteries away from children
Whether the battery is damaged (swollen) or simply no longer in use, it must not be stored anywhere exposed to high temperatures. If it is no longer intended for use:
- Remove it from the machine.
- Store it in a dry place, out of direct light.
- Keep it out of the reach of children.
It is important never to leave rechargeable batteries or battery-powered devices inside a vehicle parked in full sun or exposed to high outside temperatures.
As soon as a battery is no longer usable, it is the user’s responsibility to find an approved collection point and take it there promptly.
