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