Even though headlamps have become more popular lately, flashlights are still the main option for people wanting a handheld lighting solution that provides a strong beam directed with precision. Advances in battery efficiency and LED technology allow for flashlights that are lighter, smaller and more powerful than they were just several years ago. If you're looking to invest in a flashlight, there are a few key factors you need to consider in order to make the best buying decision. There are thousands of different flashlights, so knowing what to look for will quickly narrow down your choices, making the buying process easier.
The four key factors to consider when selecting a flashlight are the lighting output, type of battery and run time, beam type and modes, and size and weight. Flashlights range in price from about $20 to over $200, yet they may be the same size. So what's the difference between affordable and more expensive models? Well, brightness is a big factor - a more powerful flashlight may cost more, as it probably also contains advanced bulbs, circuitry and battery technology. Rechargeable LED flashlight models are more expensive than incandescent bulb flashlights that use disposable alkaline batteries. Features like impact- and water-resistance, multiple lighting modes and effective heat dissipation can all add to the price of the flashlight.
Flashlight Lighting Output
The ANSI FL1 standard for flashlights was introduced in 2009 as a way to make sure all models are tested and rated in the same manner. However, compliance to these standards is voluntary, and many brands do their own testing. The lighting output of LED flashlights is measured in lumens, which represents the intensity of the light coming out of the flashlight on the highest brightness setting when powered by new batteries. But lumens alone don't tell the whole story about brightness. Beam distance and intensity all influence the effectiveness of a light. The beam distance is measured in metres, and it represents how far the light from the flashlight will shine before it diminishes to the amount of light from a full moon. This distance can vary depending on the brightness setting picked.
Flashlight Run Time
The run time of flashlights is measured in hours, and it specifies how long it takes for the lighting output to drop to 10% of the rated output on brand new batteries, rounded to the nearest 1/4 hour. The lighting output may remain constant and then suddenly drop, or gradually decrease with time. There's a run time given for each light setting. As far as batteries go, you can choose between disposable, rechargeable and renewable batteries. Disposable batteries are the most affordable and widely available type. They're good enough to power less powerful flashlights, and are the ideal choice for occasional users. Rechargeable LED flashlight batteries, on the other hand, are far more powerful and provide more value over time. The most common type of rechargeable batteries for flashlights are lithium-ion. These batteries can be recharged through a USB connection from an AC or DC outlet, computer, battery bank or solar panel.
Flashlight Beam Type and Modes
The lens reflector around the bulb impacts how the light is dispersed, and there are three common options - flood, spot and adjustable. Flood lights provide a single beam width, which is great for completing general tasks while walking or in camp. Spot lights are a single beam condensed into a spotlight, allowing it to penetrate longer distances. This type of beam is ideal for route finding and performing fast-paced activities that require long range sight. Adjustable beams allow you to switch between multiple beam options, so you'll always have the type of illumination you need.
Further, flashlights can come with one or multiple modes. A single setting will get the job done for general-purpose use, whereas models offering two or more modes, such as high, low, medium and boost provide extra versatility. You may end up using one mode for the majority of the time, but having the choice to throw an extra strong beam can come in handy in some situations. Some models even offer strobe and SOS modes. Generally, the brighter the mode, the quicker the battery will run out. There are user programmable modes, which can be either integrated into the flashlight as a feature, or set up using software.
Flashlight Materials, Shape and Weight
Most flashlights are made of either aluminium alloy or plastic. Some have stainless steel parts for extra impact resistance. But not all aluminium flashlights are the same - thicker ones are tougher, but weight more, whereas thinner styles are lighter but aren't as durable. Cylindrical flashlights are the most common, but they roll around when laid on surfaces, so there are models that are profiled specifically to prevent rolling. As far as weight and size go, it's mostly up to personal preference. Larger units are obviously heavier, and oftentimes more powerful, but that's not always the case. However, larger models are likely to have longer run times due to having greater battery capacity.
