1. Avoid flashlights with low battery life. They might be the cheapest ones on the shelves, but you'll simply have to make return trips to the store to replace the batteries. Especially if you plan on using your flashlight a lot, as opposed to reserving it for emergencies, you'll definitely want a flashlight with a long battery life. And better yet, plenty of retailers and online stores offer rechargeable flashlights. These are ideal, as they will never require new batteries and usually last a lifetime! They are the most expensive of course, but in the long run you'll be saving time and money.
2. The brighter, the better. There's no reason to buy a flashlight that doesn't shine brightly. Some bright-white flashlight bulbs can be a little hard on the eyes, but as long as you research the products, you can find one that shines perfectly! A powerful flashlight will be the most reliable and useful to you, so why not get one?
3. When possible, buy flashlights built with aluminum alloy or other durable material. If you plan on using your flashlight outdoors where the weather is unpredictable, make sure your flashlight is indestructible.
4. Shop online! There are so many brands and prices available to you that it would be a mistake to visit just one store. The Internet affords you the opportunity to compare all the different kinds of flashlights out there, and you can almost always find bargain prices.
Flashlights are a necessity item and you will need one for your home, car, and likely elsewhere - so take some time to purchase a quality flashlight.