Dynamo flashlight compares favorably with other flashlights in that it does not need batteries. It is enough to twist the handle, press the lever for a while or just shake it, as the device is ready for work again. There are dynamo lights that shine for an hour after a minute of shaking.
The life of such lamps is limited by the durability of the bulbs built into it. Modern devices use LED lamps, whose service life is ten to twelve years of continuous operation. Therefore, such lights are called "eternal." Dynamo-flashlight is able to charge autonomously indefinitely, unless, of course, damage the structure itself.
The device of the lamp is quite simple. In the lantern is a metal core and coil. During their interaction, an electric current is generated. Most often, a Ni-Mh battery is placed on a dynamo-flashlight. The number of LED lamps in different flashlights varies in quantity and brightness. In most cases, 1 or 3 bright lamps are placed in the center.
Since the dynamo flashlight does not need batteries, it is mainly used by hunters, fishers, and tourists. For convenience and greater functionality, the device is adapted to recharge a mobile phone, digital camera, players. Some models mount radios and compasses.
High-quality dynamo lights are waterproof, they are lightweight, compact, protected from mechanical damage and shock. The charging method is quite easy and fast. All of the above applies to high-quality and therefore expensive devices. The lower the price of the flashlight, the higher the likelihood of a fake. And the way to charge the device will be long-term and time-consuming.
The weak point of the device is plastic parts. This is especially true for twisting handles, levers and gears. It is these parts that are installed in cheap Chinese appliances.
There are many types of dynamo lights. It all depends on the purpose of the device. Mini dynamo lights with key ring are on sale. Such a lantern can be worn everywhere, it is not scary to enter a dark staircase with it, or use it to shine under a sofa in search of a rolled-up thing.
For tourists, they offer lanterns mounted on their heads, like those of miners. There are large camping lights. Despite their considerable size, such devices are very light. The design of many of them can change shape for compactness.
Eternal lanterns are attached to vehicles. For example, a bicycle dynamo appeared on sale . A very convenient device for returning from walks in the dark. LED lamps will not break and will not be damaged during shaking on rough roads, during rain, a waterproof housing will protect the lamp.
So, drawing conclusions from the foregoing, dynamo lights are reliable and indispensable assistants in travel, hiking, in the forest and mountains, as well as in the city. The main thing is to choose a high-quality device and not to chase cheapness. Check with the seller for information on the power of the device, the time of full recharging, and the duration of continuous operation of the lamp.