laptop

There are still a number of older laptop models that use rechargeable nickel-cadmium batteries (NiCa) which is said to have cadmium, a hazardous element. On the other hand, newer laptop models use newer battery types (lithium ion and nickel-metal hydride) which, fortunately, are not as hazardous. Out of all the batteries, those which are based on lead and cadmium pose the biggest environmental concerns. As a result, Europe decided to ban nickel-cadmium in 2009. While several attempts have also been made to ban the use of lead-based battery, it was learned that no suitable replacement is available just yet. However, nickel-cadmium battery is now