BAERBAR ELEKTRISK STROEMKILDE.

摘要

The present invention relates to a portable electrical power source comprising housing means adapted to fit within a cell cavity of a battery-powered device, said housing means having positive and negative electrical contact means adapted to form electrical connection with corresponding positive and negative contact means of said device; a plurality of button cells disposed within said housing means, at least one of said button cells being electrically connected to said contact means and at least 50 percent of said button cells being insulated from any electrical connection to said contact means.