Until they get a year or two old. We're talking in the last year or two where it happened to me. Not an issue when they're new, but batteries degrade in performance over time, and then couple that with cold temps and you can have issues.
Don't get me wrong - I still use my phone as my primary, but having a backup is a good idea. My Montana stays in the truck, and I have an Inreach and then a Fenix on my wrist.
also agreed, same experience.
omg, i am soooo tired of carrying a million batteries and electronic devices now,,, my old school roots are showing.
let's see, phone of course,,, with some anker-style battery back up,,,
gps, (64st in my case) with a couple extra batteries cause i sometimes forget to turn it off
rangefinder, same deal, extra bat,
extra headlamp batteries of course,
ballistic calculator (kestrel),,
and if you have the new style scopes with built in bc, extra battery for that,
satellite phone, in my case,,, i'm old and weak so in case of heaart attack, wifey wants me to call her so she can tell me what to do in my last few minutes of life
sadly, i have a couple other items i need batteries for as well