36Led Usb Led Reading Light

Ref Price:
$2.06 - 4.12 / pc
Loading Port:
Ningbo
Payment Terms:
L/C,T/T
Min Order Qty:
3000 Pieces pc
Supply Capability:
100000 Pieces Per Year pc/month

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Product Description:

Feature

  • 1. 36pcs super bright LEDs

  • 2.Lasts up to 1000000 hours

  • 3.Comes with USB cable

  • 4.Color : Black

  • 5.On/Off switch

  • 6.USB or Battery power operation

  • 7.Flexible goose neck (25cm)

 

 

Application:

dimmable led reading light , led reading light , led light

For purposes of reading, writing, drawing, design, computer operation, documentation in office, family or other learning places.

 

Customizing Options

We accept OEM/ODM, Customer's LOGO can be printed on the product and various colors are available.

 

Delivery:

Shipping Service

Estimated Delivery Time

DHL

2-8 business days

FedEx

3-8 business days

TNT

2-10 business days

UPS

1-7 business days

EMS

6-14 business days

ePacket

7-12 business days

China Post Air Mail

7-15 business days

China Post SAL

14-30 business days

By sea

30-40 business days

1. 3-10 business days for Sample Orders; 7-40 business days for Bulk Orders.

2. "Business days" means Monday-Friday, excluding holidays.

3. DHL and UPS cannot ship to military or P.O. boxes address.

4. The Shipping Service above is for reference only, for any other questions, please feel free to contact us. 

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Q::Rechargeable led bulbs on the desk lamp is a few volts?
Galvanic battery 4.47 V, the brightness of the light brighter than 4.2 V now, are you? You can try the 5 v charger, should be able to increase brightness. Brightness increased, however, is to rely on the voltage, made for light-emitting tube, will reduce the service life. This is the price.
Q:Card lamp, LED desk lamp can take a plane
Ride from the airport international and regional flights originating in China, those items must be filled in capacity of less than 100 ml of container, and in a capacity of no more than a liter, repeatable sealing transparent plastic bag. Every time per passenger allowed to carry only a transparent plastic bag, beyond the part should be shipped.
Q:The led bulb loaded on the adjustable light lamp is broken
LED lights it is transistor luminescence is not pure resistance filament bulbs, when dimming voltage changing, the frequency is changing so affect rectifier, sudden high voltage will burn out the LED.
Q:LED lamp general 6/7 w is very bright, is too light is bad for your eyes
Light is not bright, can be sure is there is something wrong with the wire or internal charging circuit has a problem. Judge fault: 1, if the line is broken, looking for businesses of the same wire, in a first try (don't have to buy wire to test), indicator is not; 2, the light is bad, but little chance (if this is the case, the battery doesn't charge into the electricity, the battery has high pressure resistance state sulfide, battery need to be repaired). 3, internal charging line fault: most likely internal CBB capacitor to boil road, need to change. For this kind of lamp, the most easily broken electronic components in the charging circuit is the CBB capacitance. Can go to the repair shop repair. Only more than 1, 3 kinds of possibility is high, the highest 3, was ruled out small battery (internal small battery) problem, because the light is not bright, batteries to electric light advocate the lamp, that the battery is resistance, capacitance resistance step-down charging circuit to charge of no-load voltage can reach more than 300 v, is impossible, and no current flows through the indicator as long as is good will on, even if the battery fully charge it into electricity, indicator light will be bright. I have a problem is battery repair instrument design engineers, can ask me, I design the battery repair instrument can repair indicator but any vulcanization of battery and charge it into electricity. There is a way to judge whether there is a current through the, is at the moment of plugged into the plug has a tiny 1 of "pa", or "chip", close to the ear, can hear, careful observation can even see tiny spark, then the CBB capacitance not bad, but the light is bad, and the battery has the possibility of sulfide. Downstairs and a brother named longsheng fushun said about the battery internal resistance and resistance capacity no-load voltage of charging circuit, considered a battery sulfide failure (charge it into electricity, indicator), but not necessarily.
Q:Led desk lamp and common desk lamp which is good
The launch of the white light LED light source can form mainly consisted of 450 ~ 455 nm wavelength of the blue light stimulate phosphor powder, including lower wavelength firing ability are more strong. Usually LED lights factory within a 500 - nm wavelength control, generally is 450 ~ 455 nm or 455 ~ 460 nm, belong to the strongest radiation damage extents
Q:New LED small rechargeable lamps filled with electricity or running
First power consumption, basically see your battery is what material, have the ability to remember. If nickel-chromium batteries will be used up first, then charge, you can't have the to lithium ion.
Q:LED lamp base fever is normal
Some adopts stabilized voltage supply drive leds, regulated power supply power design is critical, no allowance, also get hot. Should be choose the calorific value of the smaller good drive and regulated power supply, is more advantageous.
Q:The led lamp charging more than 24 hours have what dangerous?????
Authentic qualified desk lamp, the battery charging protection circuit for battery will not overcharge, adequate electricity stopped. He was afraid the streets or other simple knockoffs, charge for a long time is important for battery life.
Q:I buy LED lamp light moving light and shade is how to return a responsibility
LED lamp light (light shaking) generally there are two reasons: one is the direct use of alternating current drive, the lowest cost of this kind of desk lamp, it is only a current limiting resistor circuit and a set of leds, produce power frequency flicker is inevitable; Second, using the low cost of electronic transformer, circuit performance is not perfect, the LED drive power constant current effect is poor, in high frequency belch phenomenon, users will feel the light shake in light and shade
Q:Why my desk lamp light will keep the cell phone camera shows and white flashing light and shade stripes
This is because, you are the light source is not continuous, it is actually in the rapid flashing, just flicker frequency too quickly, the human eye cannot perceive, so feeling is always in the light. Mobile phones, unlike the human eye, sensors are refresh regularly, when the refresh rate and light stroboscopic rate when there is a mathematical relationship, you will see the stripes, when the refresh rate and blink rate just appear a integer times, stripe can rest on the screen. This and use digital camera CRT screen will appear flashing is the same.

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