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:Heard that LED save electricity, to follow the fashion, a grind, spent more than three hundred bought 6 LED bulbs, but less than 3 months finished bad, all manufacturers attitude can also, all changed, but also bad, depressed.

LED drive circuit, the chip is the key to LED lights, if more than 50 bulbs also do a little wrong, so reach the technical level of domestic some manufacturer, made in the country that is imported, it is better to buy some export brand. Some of taobao mall just can also, this price can buy good LED bulbs

Q:LED rechargeable lamps learning how many watts?

From my experience, using LED lights 1 w to 3 w. Range so big because the LED chip quality is uneven, see what is the quality of.

Q:Why is the largest lamp radiation?

The expert reminds: currently on the market is filled with all kinds of cheap inferior LED desk lamp. Is common medical test and optical test showed that the LED blue light damage, only through the blu-ray isolated from the desk lamp of the blue is the blue light lamp. When parents choose and buy the lamp don't blindly covet a low price.

Q:With 10 v charger with 6 v rechargeable batteries used at the same time, that is used when mains mains, there is no mains automatic conversion electric battery. Three light bead is in series or parallel good? Add how much resistance? Step-down to to the charger? If I want the dimmer, should how to do, had better have circuit diagram

If you are sure with 6 v battery power supply, then I suggest you use four leds, two series and then parallel, such high efficiency

Q:Charging forgot to turn off the switch, directly inserted, and then not bright,, but the charge will bright lights.. Bulb burned out or what? Can you take?

You said you are a lantern fair due to the charging forgot to turn off the switch, could be greatly batteries have gone bad, try to change the battery.

Q:Consult the LED rechargeable lamps not to save battery What do I do

Should be rechargeable lamps? The battery is broken. Apart to see how the battery is what, to taobao to buy the same battery replaced

Q:I charge the battery of LED desk lamp is broken, can put the cell phone battery received above?

If what also don't know, it's best not to casually pick up. If the battery voltage is different, it's easy to have a problem. Especially if charging voltage is higher than 4.2 V, cell phone lithium ion battery will explode, caught fire.

Q:How long will leds last?

Absolute durable, more durable than bulb or tube had, but are you going to buy factory goods, don't look at somebody else's expensive, but it is good, no matter the luminance or life is good.

Q:Philips lamp with good light bulb or led

Compare recommend LED light source, compared with standard bulb more save electricity, leds are more eye, no stroboscopic price is not expensive, friendship remind a bit, choose to watch the lamp while bulb interface is E14 and E27, suggested that LZ can shop online, like jingdong amazon are allowed, the philips bulb evaluation has been quite good