Originally Posted By: EMPnotImplyNuclear
Originally Posted By: Quietly_Learning
My question in buying one used and replacing the batteries is, how do I know it was stored properly and will work when my life depends on it?

I have bought a lot of slightly used gear but I stay away from used electronics for the back country.

If there is a way to be sure it will work I'm listening...

Hi,
There is talk of a self-test feature,
a switch/button on the device

some devices offer a paid subscription service with free 2 day triel, to get a email/sms when performing a test , see 406link.com


Glad I asked. Thank you for the info and link!

The website is good to check out for anyone owning or thinking of owning an ACR or ARTEX PLB.