1. For all your inquires about us or our products, we will reply you in detail within 24 hours 2. We own well-tranied and passional sales and after- sale services who can speak fluent English. 3. We offer OEM services. Can print your own logo on product , can customize the retail box packing and other things. 4. We have very experienced R&D engineers and we have strong ability to do ODM projects.
Estimated Delivery Time
2-8 business days
3-8 business days
2-10 business days
1-7 business days
6-14 business days
7-12 business days
China Post Air Mail
7-15 business days
China Post SAL
14-30 business days
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:Led lithium battery lamp, rated input current 0.5 a
Charging current is a bit big, easy to cause the battery heating, out in the end. Or the cause of desk lamp current charging circuit for burning.
Q:The service life of LED lamps and lanterns is true?
Theory is a 30000 h - 50000 - h (semiconductor diode). 1. The chip encapsulation (not the same environment, affect the life. And the light bulb how to low the situation is not possible, this is a standard) 2. The power drive power supply (electronic products, general is 2 years,) 3. The lamps and lanterns, the whole life is a long time, generally 2 to 3 years.
Q:LED the desk lamp that shield an eye to choose good warm light or white light is good?
There is no white or warm white light, white light (more than 5000 k) bright point, feel good, as the object dyeing, less suitable for things looked fine, warm Bai Guangguang color yellow (below 3500 k), similar to the incandescent light, give a person with sweet feeling, suitable for one set his mind at to do something, but there are certain dyeing effect, also need not too extreme, actually can buy demitint between 4000-4500 k, with only a little yellow not had to take care of?
Q:Non rechargeable LED lamps have a stroboscopic?
A stroboscopic, stroboscopic degree depends on the quality of power supply. In theory, the desk lamp belongs to the direct current (dc), but after ac DianZhuan into dc, so after rectifying filtering, is not entirely direct current (dc), a part of ac harmonic superposition. Only in the battery as a power source is the real dc no stroboscopic LED light source, suggest using rechargeable LED lights.
Q:Three lights in parallel, and should be how the resistance of the step-down series?
What is your 6 v battery batteries? Small battery (battery)? 10 v charger to see what the battery charger, if the battery can work with, if nimh electricity or lithium electricity will reduce the voltage. How much is the pressure light bulb? It is best to parallel, serial word broke a are not lit up. Add how much resistance depends on what you use the lamp, or led. The dimming added potentiator current limiting. How to do is very simple, still with the figure? Charger and battery, lamps (and) series of potentiometer. If it is nickel metal hydride batteries can't do, for a long time will seriously affect the battery life in charging status. The more complex.
Q:How to repair the led rechargeable small desk lamp
The cause of the damage may have three, the first wire solder joints from or switch contact bad, you carefully check each except; The second is lead-acid battery damage can't charge; The third line fault is charging, the charger for capacitance, rectifier diode, resistor, the most easily broken is the capacitance, then inspect diode. If you didn't have electrical knowledge, please do not repair, in order to avoid dangerous.
Q:The led lamp charging more than 24 hours have what dangerous?????
No perfect protection charging for a long time will make the battery "charge", charging battery short-lived. With perfect protection for a long time charging is no great harm.
Q:How to choose the night reading reading lamp
The desk lamp that shield an eye, the type of LED desk lamp that shield an eye of warm color, it is best to solar energy, no glare, no flicker, long time reading will not cause eye fatigue. Solar panels will absorb sunlight during the day to recharge, desk lamp power.
Q:Elementary school students with what kind of table lamp is the best? The LED lamp?
From the perspective of the characteristics of the LED light source which has: no stroboscopic (traditional lamps and lanterns is constantly flickering just frequency are thought not to come out, this is a big damage for eyes) with the effect of eye protection, no pollution, long life, environmental protection, etc.; So it is recommended to use the LED desk lamp, but pay more attention when the choice, now LED market is chaotic quality time not neat, so when the choice is to pay more attention to the strength of LED desk lamp seller to ensure his quality and after-sale, 2 it is to see the buyer on his evaluation, 3 it is to see a few with power LED lamp price, the price is too low, not to buy. The hope can help you
Q:A led desk lamp always zi zi ring is how to return a responsibility?
Inside thrum have poor contact, look at the best, don't have accidents