enovix shares were up 19 to 1563 after the company said it received a purchase order from the us army the stock is up 52 in the past 12 months the advanced silicon battery company said the deal is for it to produce commercial cells for use within us army soldiers central power source called the conformal wearable battery enovix said the agreement moves the program toward full volume production the cells will be used to build preproduction cwb packs