I bought a couple 3 packs of similar LED Light Sticks at Brigade Quarter Masters about 3 years ago. The batteries in these Glow Sticks can be replaced, and the tube can be removed so that you can use the LED as a flashlight.

I gave away 2, but still have 2 in my BOB and 2 in my car that still worked well during the last check.
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"Learn survival skills when your life doesn't depend on it."