The first smart meter was developed and produced in the late 70s and, by the mid-80s, manufacturers of these devices found Lithium Thionyl Chloride (Li/SOCl2) cells to be an extremely well-suited source of power due to their long service life that reduces the need for replacement. Ultralife has recently introduced a new line of Li/SOCl2 cells, called ER Generation X, that are a great option for those who consider performance, price and lead time.
