Handy that ELTs not required in gliders, but do have a PLB.
Note that replacement battery had sat on shelf; so much less than standard 5 year life
Did get partial refund.
Lesson: Buy new unit next time around or send to manufacturer for replacement.
PLB goes in pocket in case I have to use chute.
Livetrack24 and similar services leave breadcrumb track provided cellular coverage available - might not work in Oz outback.