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Home >> Batteries and Chargers >> 1pcs ULTRAFIRE 18650 3.7V 2400mAh Batteries Blue

Blue-violet Lasers

Laser pointers with 405 nanometers wavelength of light are also called blue violet laser pointers. Although it is rarely prefered to the green and red ones, it could be used for what others do, which also reflects the individual unique aesthetic taste. It is probably not as much preferred lasers as an astronomy laser pointer, because brighter colors would make an object more visible in the sky. However it comes down to all other uses such as pinpointing something on the large screen or on the blackboard.
Green Lasers

Green laser pointers is now the world's most popular laser pointers, because the green light than red light 6 times more than red light beam significantly, while the price is much cheaper than the blue and yellow. Green pen is the wavelength of light emitted 500-550nm, the wavelength sensitivity of the coefficient table, as is the closest one wavelength. Green is undoubtedly efficient light source, the eye more easily identified. The green light sensitivity of the human eye is higher than a lot of red; the other is green light scattering in the atmosphere more than red light.
Red Lasers

Red laser pointers, wavelength 630-670nm green laser pointer is more for longer. The first red pointer was released in the early 1980s. Nowadays, the red laser diode technology has been very mature. More durable, the price is much more cheaper than ever. More easily transmitted red light air, dust, water vapor, so the light path can be seen to need more power. 100 mW red laser pointers probably only about 20 milliwatts, and green. Do remember that red laser pointers are powerful since the light they emit is powerful when it hits a certain object and converges into a point.
Place to note

Now, more and more laser pointers and flashlights sold in the market are class IIIB with a power over 5mW. But when the laser directly penetrates into the eyes, there may be some damage. Especially to some high power laser pointers, diffuse light probably damage the eyes, the focus are more likely to ignite flammable materials. Therefore laser pointers are not a toy, not suitable for children. When operating high-power laser, wear special secure glasses would be safe, especially for the invisible laser. In a word, no matter how much power the laser power is, you need to avoid hitting into your eyes.

1pcs ULTRAFIRE 18650 3.7V 2400mAh Batteries Blue

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Product Reviews

Do you want the economical and greener lifestyles? Maybe you should start from minor matter, and just like use the rechargeable batteries. 1pcs ULTRAFIRE 18650 3.7V 2400mAh Batteries Blue adopt universal standards, most of them suitable for cameras, toys and many other electronic devices. Except that, it features extensively long working life and high efficiency, great for use. And it is compact and rechargeable, so you can carry it anywhere anytime, convenient to use. The number of charge cycles is about 1000 times, durable and reliable!

New battery
High quality and durable
Provides excellent continuous power sources to your device
High energy density, long life battery
This battery has an extra long life for all your battery powered devices

Technical specifications

Type / Brand	ULTRAFIRE 18650
Voltage	3.7V
Capacity	2400mAH
Material	Lithium battery
Color	Blue
Weight	48 g / 1.69 oz
Dimensions	2.56 x 0.71" / 6.5 x 1.8 cm (L x Dia.)

Package list

1 x ULTRAFIRE 18650 2400MAH 3.7V Rechargeable Batteries

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1pcs ULTRAFIRE 18650 3.7V 2400mAh Batteries Blue

Shipping To	Shipping Methods	Delivery Time ( business days )	Rates
	Worldwide Free Shipping	7-15 days	$0.00
	Express Mail Shipping	4-7 days	$18.99

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Date Added: 02/03/2013 by

The battery work just as they are advertised, great performance for the cost. I will be buying more. Good seller.

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