I keep our bug-out bags in the garage (not worthy of indoor storage as the idea is NOT to need them). Garage can see a pretty wide range of temperature extremes (though I've not actually measured
*at* the spot where the bags are stored) from teens to well over 120-140F.I periodically replace the batteries stored in them as a safeguard against them "being flat" when needed.
I'd like to store NiCd's as they could potentially be recharged if/when needed whereas alkalines are disposable -- not a good idea if there isn't a convenient source of FRESH batteries available! (there are a couple of charging mechanisms that I have available in that deployment case).
[Note I don't expect the NiCd's to hold a charge while in storage; but, would like them to be able to TAKE a charge thereafter!]So, what's the downside re: NiCd's exposed to inhospitable conditions? Am I better off stockpiling several dozen alkalines? And, replacing them (while thusly stored) how often? (note temperature cycling)