Q:We recommend a night to ride a flashlight, riding at night, it is best to have high brightness LED flashlight, the longer the better the battery life

Brightness and endurance time are a pair of contradictions, the inverse relationship between the two. So take a balance between the two.

Q:What brand of LED flashlight is good?

The length of life depends mainly on the power consumption of the light source, the size of the battery power and the current size of the drive circuit. Any brand is the same.

Q:What's the brightness of the LED flashlight?

. Bright flashlight, which is a new lighting tool with light emitting diode as light source, has the advantages of electricity saving, environmental protection, durability and high brightness.

Q:High power flashlight LED lamp is 1W, want to use mobile phone battery when 4.2V is connected to electric drums!

As for the big resistance associated with rated voltage of LED bulb. Assuming the 3.3V, the 1W current is about 0.3A.The voltage on the resistor is 4.2-3.3=0.9V, the current is 0.3A, and the series resistance is about 0.9/0.3=3 ohms.Assuming LED lamp voltage rated voltage is 3V, current of about 0.33A 1W.Resistor voltage is 4.2-3=1.2V, current 0.33A, about 1.2/0.33 = 3.64 OHM Series resistor.

Q:Buy a few flashlight LED lamp, directly connected to the 5V electric heating lamp why. How to solve?.

The general electric LED lamp with voltage does not exceed 4.2V, because 18650 of the full battery voltage is 4.2V, voltage to 3.8V protection to prevent the excessive discharge of the battery. The heating lamp is normal, the more heat generating power is also bright brightness. So the LED lamp equipped with aluminum substrate and the copper circuit warehouse to heat.

Q:What can change the flashlight bulb?

It is this light cup is dedicated to the CREE XR-E LED package, if you have a certain ability, can think of a way to SST-50 10W LED, but the light effect should not be very good, the problem is a LED has been on top of you more than one torch money.

Q:How does the LED flashlight determine the intensity of illumination?

LED flashlight is a high brightness LED used as a light source. It has the advantages of high brightness and low energy consumption.

Q:LED rechargeable flashlight se a 316 how much?

Then, in the lower left corner of the control center, you will see the flashlight icon, click to open

Q:How can I make a phone call flashing? The flashlight light is not a Led light

Generally in the settings / display inside, you look for, and some phones come with flashlights, LED lights, and some mobile phones to use software to open the mobile phone flashlight, that is, the camera behind the flash continues to shine

Q:Flashlight LED one super bright, how many volts?

See the lamp and brand. The most commonly used CREE L2 series are the most 3V, the CREE R5 series, up to 1.5V. These brands can find accurate parameters on the official website of LED.