Many survivalists feel that when it comes to flashlights, rechargeable flashlights are the best choice. Quality emergency flashlights have LED lamps and rechargeable batteries which pose fewer problems than flashlights with primary batteries. Flashlights with LEDs and specialty batteries such as a CR123a will outperform a comparable flashlight with AA batteries, over 600 lumens for the CR123a to 280 lumens for AA. Rechargeable batteries are either Li-Ion or Ni-MH; most survivalists prefer the Li-Ion rechargeable batteries because of their longer shelf life. One of the advantages to Ni-MH is they are available in the same sizes and similar voltage as alkaline batteries, which means they can be used in the same flashlights as alkaline batteries. A good standby flashlight will have a dynamo generator; you wind the hand crank and it will provide power for a specific amount of time for the flashlight.
Many survivalists feel that when it comes to flashlights, rechargeable flashlights are the best choice. Quality emergency flashlights have LED lamps and rechargeable batteries which pose fewer problems than flashlights with primary batteries. Flashlights with LEDs and specialty batteries such as a CR123a will outperform a comparable flashlight with AA batteries, over 600 lumens for the CR123a to 280 lumens for AA. Rechargeable batteries are either Li-Ion or Ni-MH; most survivalists prefer the Li-Ion rechargeable batteries because of their longer shelf life. One of the advantages to Ni-MH is they are available in the same sizes and similar voltage as alkaline batteries, which means they can be used in the same flashlights as alkaline batteries. A good standby flashlight will have a dynamo generator; you wind the hand crank and it will provide power for a specific amount of time for the flashlight.