Buy a good LED torch should note the following points (for reference):
1. Quantity of LEDs. It should be moderate. Home general rule, not more than 12, use the battery in 2 to 3 is better, and then a big wave a little for other special needs, according to the need to determine. Of course, high-power Hight Power LED flashlight and High Power LED Street Light is generally not the number of 12.
2, welding, welding to be in prison. Each diode is connected in the circuit board by soldering, if the Weld a bad contact, it may cause the bulb does not light or affect the overall use.
3, batteries, regular batteries and lithium two kinds of lithium rechargeable battery, but the low life, about two years, LED life of video led light panel about 10 years.
4, brightness, good high brightness LED flashlight, the decay rate is slow.
5, light bulb, the bulb goes out to the naked eye is difficult to distinguish between its good and bad, to see the consistency of the light bulb lit.
6, waterproof, good LED torch with waterproof function, seismic performance, and the ruggedness. It belongs to the electronics, flashlights front of a circuit board, once the water prone to short-circuit, resulting in damage.
7, aperture look good LED torch aperture for the uniform of a circle, poor LED flashlight beam is divided into yellow and blue two-color uneven distribution.
8, appearance, you can choose the aluminum alloy shell, beautiful LED TUBES.
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