Sony Corporation on Thursday said it introduced its mercury-free alkaline button battery, which is commonly used in cameras, remote controls and calculators, the alkaline manganese.

It has developed none mercury battery cell that prevents Hydrogen gas build up, from its original button battery cell, the mercury-free silver oxide button-cell, which reduce its production of about 470 kilograms a year and or 68 bottles of 500ml per bottle of mercury for the coming year.

It also plans to put it on the market later this year in spring’s seasons with its six models of those environmentally conscious batteries, which cost US$2 or ¥200 each in Japan.

Alkaline button batteries use Zinc for their anode, manganese dioxide as the cathode, and an alkaline electrolyte.

Japan Sony Free Battery