It doesn’t matter if the power goes out or the entire power grid goes down. Either way, you are going to need some light. While a lot of people go with standard candles, the flameless candle is a good option. They aren’t a fire hazard like regular candles are, and they are easier to use.
A flameless candle runs on batteries. Many of the batteries last for 500 hours so you can use them for a long time before you have to replace them. Also, because they are flameless, you can use them outdoors without having to worry about them burning out. They will provide you with enough light for you to be able to see during the disaster, and are easy to transport.
Be sure to add a flameless candle and some batteries to your bug out bag. Also, stash some around the house in case you have an emergency situation.