How much LED is on the flashlight? W?
Now the LED used on the bright flashlight is 3-5W, so you can have more LED lights for the light intensity.
I am doing titanium lighting flashlight, the flashlight irradiation effect is relatively strong, mainly C10 flashlight with 800 lumens single chip CREE XML T6 LED, in the near universal light intensity, long distance focusing, pavement irradiation effect is great, and the first choice is the outdoor riding at night. 18650 hours straight, otherwise T6 LED with small size, brightness super awesome, you can exchange.
Power flashlight on the use of LED is not certain, the use of 1-3W pocket flashlight following general 10CM on LED, and more generally in the 3-5W, 10W or LED, and then a big multi section 18650 battery flashlight, you can use the 20-50W LED.
