What will you do if a "Cold Day In Hell" is in the forecast for America, God Forbid?One thing is for sure, you will definitely need power in that Cold.The AA Energizer L91 Lithium Batteries, which was sent without delay and in excellent protective packaging from the seller CheapBatteries, are premium AA batteries and are essential for S.I.P. (Sheltering In Place) applications.If you have critical items in your household or business that use AA batteries as primary or backup power, then you should have a number of these long shelf life Lithium AA batteries in your possession and ready to use in case you lose electrical power. The extended shelf life of the AA Energizer L91 Batteries far exceed those of regular Alkaline AA batteries, too.In addition, if you hunt, work or play in the field and use tools and equipment that require AA batteries, these Lithium AA batteries operate far more efficiently than alkaline batteries in cold weather. (Think about security items that are placed outside in the field that use AA batteries, too).Since the shelf life of these Lithium AA batteries are extended, one technique is to load your regularly used device with alkaline batteries, but tape several of these Lithium AA batteries to the devices (or inside the cases) in case you need them. Just remember to unload the alkaline batteries from the device when placing it into storage to prevent battery leakage and damage to your device.However, the recommended alternative is to exclusively use the Lithium AA batteries in your devices (such as EOTec Holographic sights) and leaving them in place when not in use, too. With this alternative you eliminate critical battery reload time, and you prevent battery leakage as most good lithium batteries like the Energizer L91 will not leak and corrode the inner contacts of the device like long term device storage containing alkaline batteries would.Again, the folks at CheapBatteries (aka Global Imports, Inc) deserve the credit for making available bulk purchasing of these excellent and reliable AA Lithium batteries on Amazon at an affordable price. Great Service and Great Partnership by Both!Only God knows if America will be hit with that “Cold Day in Hell.” Regardless, stay in His Warmth and Light, and be ready to protect yourself--the dwelling place of The Holy Spirit--and those who God placed in your stewardship.Blessings,...Chappy (AKA GhillieMan)