Discarded laptop batteries still have enough life in them to power slums in India and other developing countries, a new study by IBM India has found.
The research presented at a conference in San Jose, US, analysed a sample of discarded batteries and found 70 per cent had enough power to keep an lED light on for more than four hours a day for a year.
According to researchers at IBM India, many of the estimated 50 million lithium-ion laptop batteries discarded every year could provide electricity storage sufficient to light homes in developing countries like India.