The Laptop-Powered Home?
Research conducted by an IBM team may help keep discarded computer batteries out of landfills and give them a second life lighting homes.
A study based in India found that by taking apart used batteries, verifying and using working cells, and adding circuitry to allow charging and prevent overheating, they could create battery packs that could be distributed on a sustainable, low-cost basis. Homes in poorer or more rural areas could especially benefit, researchers said.
At least 70 percent of discarded batteries were able to power an LED light for a minimum of four hours per day for a full year, the researchers said.
According to Gizmag.com, which reported on the study, the Environmental Protection Agency estimates that about 50 million laptop and desktop PCs are discarded each year, many with working batteries.
Refurbished batteries were given to street vendors in Bangalore, who reported back that the LED lights had exceeded expectations. CFL bulbs lasted for a shorter time, however.
With the idea shown to be viable, work will start on streamlining the devices into a prototype, Gizmag reports.
Source: “Discarded laptop batteries could be used to power homes,” Gizmag.com (Dec. 9, 2014)