Your diving flashlight
For lighting at night, you need a flashlight for diving. It is your main light source on an night dive. During the day you can use a flashlight to look into cracks and crevices. Diving flashlights are also used to explore the interior of underwater wrecks and Caverns (this type of diving requires specialized training).
Also known as: diving torches, underwater lights, cartridge light, HID, tungsten light, LED, lights
According to garyflashlights.com, there are two basic styles of flashlights of diving, with different options as they are with rechargeable or disposable batteries, and the type of bulbs used.
Flashlights – this kind of small as compact light sources are used during the day or as a back-up in dives at night, in wrecks and caverns, to increase the main sources of light when diving in darkness.
Flashlights with battery cartridge – used mainly by divers of wrecks and caverns, the headlights with cartridge supplied a stable light by means of a cable that takes the energy of a battery in a cartridge that you take in the waist. Headlights with cartridge are normally much more bright (although this change as it progresses the lighting technology making more powerful small flashlights), therefore this makes carry larger batteries more comfortable.
Hermetic to water and that support pressure – any diving flashlight is designed to stay isolated from the water and withstand the pressure at any depth. Avoid the “waterproof” flashlights that are not designed for diving because they can come down and stop working with pressure.
Durable and reliable – the diving environment is not harmless to the team. Diving flashlights must be robust to withstand a reasonable use.
Rechargeable batteries – except that you use a flashlight on rare occasions, the rechargeable batteries are the way to operate large size flashlights. They are depreciated rapidly and reduce the number of disposable batteries. Many flashlights work best with rechargeable NiMH batteries that with disposables, therefore not only saves money and helps the environment, but also improved performance.
Size – though powerful flashlights are smaller, there is a relationship between size and power/brightness. Small lanterns are the best choice for diving day and as backup. Large flashlights are best dive of the night, the wrecks or caves. Normally referred to as primary lighting because they are the main source of light.
Tungsten halogen, HID, LED -types of bulb change quickly, allowing you to create more light with less power. The halogen and tungsten bulbs cost less but does not shine so much and spend more battery. The HIDs and led are the most avant-garde – a 10 Watt HID gives the same light that one Halogen 50 Watts and needs only 20% of the energy. LED bulbs are even more effective and more durable.
Disposable/rechargeable – more modern headlights use AAs batteries and other currents and accept both rechargeable batteries as disposable. It means that if you only occasionally use flashlight you can use rechargeable if you spend it for other uses. If you want to have your flashlight to have it list once a year, the batteries alkaline quality are very good.
- Buys the best, not something less. As with other types of equipment, when you’re undecided even with advice from your diving centre, it is usually better to invest in the best system.
- Remains trained. Get PADI Night Diver course, PADI Wreck Diver course or PADI Cavern Diver course if you are interested in these activities.
- Read the instructions of your rechargeable batteries. Batteries have different characteristics and require different maintenance. The worst thing you can do with NiMH batteries for example, is not to use them – if they are not used, must be charged monthly.
- Two universal rules on batteries: Never mix new batteries with used partially, and never you mix different types of batteries, even if the flashlight accepts those types. Always use the same type of batteries of a new game loaded.