Tuesday, April 17, 2012

No. 488: LED lighting with built-in lithium-ion battery for energy saving (April 17, 2012)

Japan’s leading retailer of electric appliances, Yamada Denki, has launched LED lighting that incorporates a lithium-ion battery for offices and outlets. The new lighting system uses the conventional power source and the built-in battery alternately and can save energy consumption by 40% as compared with the existing LED lighting. In addition, it can be an emergency light during a power failure. Developed by CyberCoin, the new light system is named Everluce and sold exclusively by Yamada Denki.

Everluce starts to charge the built-in lithium-ion battery and finishes charging in three hours. Once the lithium-ion battery is fully charged, only the lithium-ion battery lights Everluce for two hours. This mechanism reduces power consumption. Yamada first put an Everluce that has the same brightness as 40 W. It has the power consumption per hour of 15 W on average, about 40% lower than the existing LED lighting. It will turn into an emergency light that illuminates for 12 hours in power outage. Everluce is priced at 19,800 yen each, twice as much as the existing LED on the market, and rented for a monthly fee of 300 yen. Yamada Denki plans to sell 1 million Everluces in 2015.    

The opening day of an outlet of Yamada Denki in Tokyo.
 You can hear several kinds of foreign languages from customers in the line.

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