Laptop Adapter 40 Watt 19V 2.1A

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100000 Pieces per Month pc/month

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Product Description:

*Over-current protection,

*Voltage protection,

*Short circuit protection,

*Hot seller,Price advantage.

*Input :100-240V 50-60Hz 1.5A


*DC interface:2.5*0.8



Products Features:

1.Professional patch technology production;

2.Allmported electronic components, circuit boards with over-voltage, over current, short circuit protection;

3.Output power enough;

4.The output voltage accuracy;

5.The output voltage ripple is small;

6.Original standard design, 100% compatible with original power supply.

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Q:Why is my laptop connected to the power adapter after the screen to darken?
Under normal circumstances should be connected to the power to light up on you can hold the notebook keyboard below fn above f1 ~ f12 from the keys to find a light like the button should be able to light up. hope this helps
Q:Lenovo power adapter voltage and current problems
The problem is not great, but be sure to pay attention to positive and negative
Q:19V power adapter with a laptop how to switch to 12V
Look at your idea is to put your 12V battery installed in the notebook, but also worried that can not start the sound card, while not want to destroy the original battery. I suggest you go directly to the Dell store to be equipped with a battery can be.
Q:Dell laptop power adapter can be used but can not be charged
Hello, the power adapter if the current is detected to be unstable, is absolutely not allowed to charge, the computer is detected after the estimated is to protect the battery, so do not charge, can only use AC power. Power adapter 220v AC power supply, through the square box, that is, transformers, stable to your computer's rated voltage and current, the computer can be used normally It is recommended to buy a bar, because if the adapter is broken, the current intensity is too high, will breakdown or burn the motherboard a lot of capacitors, if the computer to change the motherboard, then the big trouble
Q:Laptop power charging interface is not appropriate, with a laptop power adapter adapter?
Can not. Xian Yuan is able to use, depends on several aspects: 1, the same voltage. The same as AC or DC.      You are all DC, but the voltage is different, with a condition on the negative.
Q:How is the laptop's power adapter used?
Now the notebook is generally lithium batteries, in fact, is a shell installed in a series of battery pack. Specific maintenance methods can refer to mobile phones and digital cameras, DV and other battery maintenance methods. If the long-term use of electricity, it is recommended to remove the battery after the use of power. It is said that the battery is in a semi - saturated state and is good for the durability of the battery (my SONY camera manual is so recommended.
Q:Notebook power adapter jacks hot cause
Or the adapter is hot, my adapter is very hot after running out of the computer, which has nothing to do with the vents, because the power supply through the adapter to the computer power supply, and the adapter itself will have the power to convert energy into heat, it will be made Hot, very simple daily physical problems, just like the bulb will be hot like
Q:Laptop power adapter fall into the water how to do?
First dry. Place 3-5 days, power test. If you can not boot. Replace a power adapter.
Q:Tsinghua Tongfang notebook computer power adapter?
Tsinghua Tongfang notebook power adapter Input voltage: 100V-240V (depending on model) Output voltage: 11.1V-19.5V (depending on model) Power: 60W-90W (depending on model)
Q:Laptop connected to the power adapter, always a power will not power. Install the battery does not turn on the power adapter can be normal boot.
This thing you use the multimeter unrealistic, the interface loose, poor battery contact, the motherboard failure is possible, you'd better get the computer city so that the master like a face experiment to show you, I most hope that the adapter has a problem, The
Our products have passed a series of certifications, such as CE, FCC and RoHS. We integrates development, design, production, processing and wholesale. Based on scientific attitude and precise processing, we produce every unit of reliable quality. With high quality products & a good reputation, we have got the favor of customers.

1. Manufacturer Overview

Location Guangdong,China (Mainland)
Year Established 2009
Annual Output Value US$10 Million - US$50 Million
Main Markets North America; South America; Eastern Europe; Southeast Asia; Africa; Mid East; Eastern Asia; Western Europe
Company Certifications ISO 9001:2000

2. Manufacturer Certificates

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3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage 71% - 80%
No.of Employees in Trade Department
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b)Factory Information  
Factory Size: 3,000-5,000 square meters
No. of Production Lines 10
Contract Manufacturing OEM Service Offered
Product Price Range