1, compact LED flashlight
The compact LED flashlight refers to a small flashlight with a AA battery or AAA battery, or a pocket flashlight with three button batteries or a keychain flashlight. The concentrating effect of this compact LED flashlight is also poor, and the power consumption is still large, but it has certain practical value in the case of temporary emergency lighting in the city or long-term use of things at night. This flashlight due to the use of little time, is often stored for temporary use, so it is best to use a better sealed alkaline battery (generally can be stored for two or three years without failure), do not use ordinary carbon batteries, so as to avoid a long time will not flow out of the electrolyte and damage the flashlight.

                                                                            
2, manual charging LED flashlight
There are two types of manually charged LED flashlights. One is that the flashlight has a moving cylindrical magnet that, when shaken in the hand, slides through a coil, which generates an electric current and is rectified to charge a battery and light up an LED. Another closing is the flashlight that drives the generator by hand, which is cheaper, but most of these manually generated LED flashlights are not reliable.

3. Single lamp head high-power LED flashlight
Single lamp head high-power LED flashlight, refers to the use of a power of 1W~5W single LED light flashlight. The high-power LED used in this single lamp head flashlight is made in China and imported. Generally speaking, the imported high-power LED has a higher luminous effect, but the price is much higher. The biggest advantage of this single lamp head high-power LED flashlight is that the concentrating effect is better, but it is still necessary to see whether the condenser of the flashlight is well made. The manufacture of a more regular single lamp head high-power LED flashlight, its concentrating effect is close to the ordinary flashlight, and the brightness is higher.

                                              
4, plastic shell rechargeable LED flashlight
Rechargeable flashlights with plastic shells are often cheaper multi-LED flashlights with lead acid batteries. The lamp holder of this flashlight ranges from five to more than 20, and it also comes with a capacitor step-down charger, which is also convenient to charge. This kind of plastic shell rechargeable LED flashlight, the price is generally not high. The concentrating effect of this kind of flashlight is not very good, but the overall brightness is good, and its main disadvantage is that the lead-acid battery needs to be charged often to make the battery not fail in advance; Even if well maintained, such lead-acid batteries can only be used for more than a year before they fail. This flashlight is a lead-acid battery and flashlight made into one structure, after failure is generally not easy to replace.
5.LED solar flashlight

                                                                                           
Solar flashlight is the perfect combination of solar energy technology and energy-saving LED; Exquisite appearance, convenient and practical function; Put in the sun during the day, you can use a few hours at night, do not need to replace the battery, will not cause environmental pollution; It is a real low-carbon environmental protection and green product. Suitable for home or outdoor lighting, hunters, hikers and campers, military, security, traffic survey and engaged in emergency work is convenient for lack of electricity, less electricity area travel, gift giving, etc. No need for any power supply, the use of sunlight and lights, storage backup. How it works: First collect light and convert light energy into electricity. And by the stabilizer to change, drive LED light.