For those who do somehow think that zombies will come for us all one day, scrambling for the right flashlight batteries might be something you'll want to avoid. Pick up this Panasonic any-battery flashlight and forget about that problem.
If you can stop watching The Walking Dead long enough to check this flashlight out, you'll realize it's actually a pretty interesting concept and one that seems like a lot more devices should employ.
Basically it doesn't matter what flashlight batteries you use, because they'll all work. Most devices specify which batteries they need and how many, but this flashlight will take one AA battery and one AAA battery if that's all you've got.
Be prepared for the potential arrival of zombies with this handy flashlight.