Headlamp, as the name suggests, is a lamp worn on the head, which is a lighting tool that frees both hands.
When we are walking at night, if we hold a flashlight, one hand will not be free, so that we cannot deal with unexpected situations in time. Therefore, a good headlight is what we need to have when we walk at night. By the same token, when we camp at night, wearing headlights frees up our hands to do more.
1. Alkaline batteries are the most commonly used batteries. Their electrical energy is higher than that of lead batteries. They cannot be recharged. At low temperature of 0F, their power is only 10% to 20%, and the Voltage voltage will be significantly reduced during use.
2. Nickel-cadmium batteries: It can be recharged thousands of times, it can maintain a certain amount of power, it can not be compared with the electricity stored by alkaline batteries, it still has 70% power at low temperature 0F, it is best to carry high power during rock climbing. The energy of the battery is 2 to 3 times higher than that of the standard battery.
3. Lithium battery: its voltage is 2 times higher than that of ordinary batteries, and the ampere value/hour of a lithium battery is more than 2 times that of two alkaline batteries. It is at 0F as if it is used at room temperature, but it is very expensive, and its voltage can be maintained. constant. Especially useful at high altitudes.
Headlights are an indispensable and important equipment in outdoor activities, such as hiking at night and camping at night. Although some people say that the effect of flashlights is similar to that of headlights, the new headlights use power-saving technology, such as LED cold light technology, and The material innovation of lamp cups on high-end headlamps is incomparable to flashlights with civilian prices. Therefore, headlights can replace flashlights, but flashlights cannot replace headlights.
