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:The LED lamp can use while charging?
Quality is better, is to use the constant current source, you can charge while using, quality generally USES is voltage source, charging or not of the lamp voltage constant, can also charge while using. Quality again almost lamps and lanterns, the battery light directly, when charging, with charging part of the road, as long as the battery line voltage is also the normal range, flushed the edge can be used. The worst may be something wrong with the battery, charging circuit directly to the led lamp, so it is easy to burn out the light, it is recommended to use multi-function controller, can control the charging and discharging, ensure the safety of the leds.
Q:LED rechargeable lamp, what to do with the battery can't charge.
The LED rechargeable lamps When first use, adequate electricity, first when not in use, store must supplement electricity once in three months. When using battery lighting lighting obvious dim light need charge in time, otherwise it will affect the battery life. And new LED rechargeable lamps have been used while charging into consideration. New product YG - 3939 jager, YG - 3940, and so on lamp has been achieved using while charging.
Q:Led lamp, good point light source or surface light source
Not good surface light source,, the advantage is that the good anyway
Q:LED small desk lamp, found that the charging indicator light is not bright, or bad?
Since it is new, then to find businesses, can ask how to use correctly.
Q:The LED lamp how to realize the function of adjustable brightness and color temperature?
Dimming color LED to absorb dome light, it is within 2 the output of the road. All the way to warm light color temperature (3000 k), all the way to cold light (white, around 7000 k color temperature). Each is independent of all the way. By giving each different brightness, all the way to the whole lamp color temperature adjustment and brightness adjustment. For example, A road is warm light, color temperature 3000 k, but only 10% of the full bright, brightness and B road is cold light, brightness is only 40% of the full bright, so, blending the color temperature in light body may be only 5000 k (there was A little warm white is not very cold, white). That is to say, the real dimming color can calibrate the brightness and color adjustments.
Q:LED lamp stroboscopic serious, can you tell me the reason?
Use digital camera LED lights have similar moire interference, should be a digital camera sensor scanning frequency and multiple leds blinking frequency with a certain relationship, lead to no photosensitive sensor some particular locations and appear black stripes. According to the phenomenon that the LED lamp is resistance capacity drive is premature. In general, if the LED lights use resistance capacity device driver, then stroboscopic frequency twice of the ac power frequency, i.e., using flash frequency 50 hz alternating current while the frequency is 100 hz, with 60 hz ac for 120 hz - under the frequency, the human eye or is there a way to identify: the five fingers outstretched rapidly oscillating in the lamplight, if can see "a lot of fingers in the middle of the swing range (shadow), you can judge the LED use the low frequency pulse power supply driver. If the LED is used inverter type constant current power source, then stroboscopic frequency up to 40 ~ 200 KHZ, wiggle the fingers in this light, the human eye of persistence of vision has been unable to form such as "image of guanyin", so it can be the difference between the judgment
Q:How to repair the led rechargeable small desk lamp
If the part is not bright, check if not bright LED's virtual welding or burning.
Q:The LED lamp male female connector can be removed?
When possible, link need to pay attention to the several: 1, LED driver need to distinguish between is negative, you to pay more attention to the joint of the line is negative, don't answer the reverse;
Q:The LED lamp is bad for your eyesight?
I don't know how you this table lamp LED performance, but the average white LED light slants cold, as compared to that of the object under the LE in natural light color nature is soft, so as a desk lamp may not good for your eyesight. But replace other USES energy-saving lamp is very good at home
Q:What kind of light the lamp that shield an eye?
The desk lamp, LED is better, although it will still more expensive than energy-saving lamp or the light bulb, but value: the choice of the LED to have the following key points: first, to see the shape of the LED lamp bead, must be patch (that is, a piece of aluminum substrate has a lot of square yellow dots), if the little lamp bead is spherical or several high-power lamp bead, decisively abandoned, because those are the old, bad for your eyes, just before the LED haven't rolling development to the mature technology;