I watched that underwater cave movie last week and the part where the main character is out of batteries for their flashlights and grabs a bunch of lightsticks.
Then I thought: forget about flashlights for home emergencies. Each time I grab one the batteries are long dead. I could use lightsticks instead.
But the question is how long can you store lightsticks? I googled and the lightstick mfgs. say they are good for up to 4 years under ideal storage conditions.
But what is the real shelf life, ie. has anybody used a really old lightstick and what were the results?