I am replacing my Artex 406mhz ELT battery, but before I remove the instrument panel (50 or so screws) I wanted to know what the battery is in the remote control 'head' ..the Artex CD shows a copper-top battery from Duracell but company instruction CD only gives a 6-diget company number, not the Durascell number. I wanted to have one on hand before taking the plane apart to make certain I can get one locally. I e-mailed Artex for info but got no answer. thanks for any help. Photo of the Duracell battery doesn't show their number.