3. UST 30-Day Lantern
Flashlights can provide this on a temporary basis, but they will generally wear out quite quickly if you use them for more than a few minutes at a time. Therefore, it makes sense to make some room for a 30-Day Lantern from Ultimate Survival Technologies.
This lantern can last a full 30 days on the 29 lumens setting. This is not extremely bright, but it is definitely better than relying solely on a flashlight.
You can also turn up the lumens setting if you are willing to sacrifice some of the unit’s lifespan between charges. This lantern does take up a lot of room, but it could be well worth it in many situations.