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The first flashlight was invented in the 1890's. Early in the flashlight's history, it was used as a novelty, a small light that could be attached to a man's tie or a woman's barrette—but it was necessary to carry a large battery pack to power the light.
As the flashlight developed, it became ideal for more conventional uses, and its size and shape evolved. Battery technology also improved—while battery power increased, battery size decreased, making the flashlight more portable and user-friendly.
A lantern is used to cast light over a wider area than a flashlight and has three main characteristics differentiating it from a flashlight. A lantern:
Keep the batteries in your flashlight when it's not in use—that way, you'll have a working flashlight when you need it. If you don't use your flashlight for a long period, turn the power switch on and off occasionally, just to make sure the flashlight is still working. It's also a good idea to change batteries periodically to prevent battery leakage if you don't use the flashlight for long periods.
You should also keep an unopened package of fresh Energizer® batteries where you store your flashlight. This way, you'll be sure to have a working flashlight and a backup set of batteries.
Flashlights have multiple uses. First and foremost, they give you the power of portable light whenever and wherever you need it. Key uses are safety and security, general household use and outdoor camping.
Other flashlight uses include:
In almost all flashlights, it is possible to replace the bulbs. Different flashlights require different size bulbs, and battery-powered lanterns typically require special bulb sizes.
Replacing your flashlight bulbs is a great way to extend the life of your light. It is a good idea to periodically replace your flashlight bulb, especially if your flashlight is mission-critical. Light Emitting Diodes (LED), however, never burn out and do not need replacing.