12v 4A ac adapter power charger for laptop  replacement ac power adapter

Specification

Replacement Hp/Compaq 12v 4A AC Adapter

100% Brand New

Input: AC100-240V (worldwide use)   50/60 Hz
Output: DC12V 4A
Power: 90W
Connecter size:Internal Diameter: 2.1mm  External Diameter: 5.5mm
Brand New Replacement Product, works as genuine parts, 100% OEM Compatible!!

Technical parameters:
 
1 Input voltage range AC100-260V.
 
(2) Input voltage frequency :50-60HzHz.
 
3 Output voltage 12V.
 
4 Output voltage transfer rate: 5%.
 
5 rated output current 4A
 
6 Current output range 0-4A (4 A work no more than 5 minutes).
 
7 Output ripple & noise 80mVp-p.
 
8 The efficiency is 75-80%.
 
9 Output short circuit protection.
 
10 overheating protection.
 
11 Operating temperature 0 °C ~ +50 °C.
 
12 Storage Temperature -20 °C ~ +85 °C.
 
Humidity 10% -95% RH

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• Replace your old or worn out AC Power Adapter with this Sturdy 12V Power Adapter Adaptor, can be used worldwide

How to Know to Use an Adapter or Converter for Foreign Travel:

• Buy a voltage converter if you plan on using something like a hairdryer or clothes iron. Voltage converters will make up the difference between the voltage needed by the device and the voltage available from the outlet, allowing these devices to work like normal. A standard voltage converter is only meant to be used for short periods of time, which makes them ideal for these types of situations.
• Use a transformer for larger devices like televisions and personal computers. Transformers operate essentially the same way as a standard voltage converter but are intended to be used for longer periods of time with devices that use larger amounts of power.
• Buy a wall outlet adapter. The plugs on North American wall outlets are flat, so all of the power cords for devices sold in America have flat pins. Wall outlets in Europe and Asia have flat plugs which will not work with American power cords. A wall outlet adapter will allow you to plug your American power cords into European and Asian wall outlets. 

How to Buy and Use Travel Plug Adapters, Transformers, and Appliances:

• What Do Wall Plug Adapters Do? Plug adapters allow you to plug appliances made in one country into the very different kind of wall plugs found in another country. You won't believe what shapes and sizes they come in! Some countries, like England and India, might even have two or three different types of wall plugs, because they're converting from an old to a new style, but slowly
• How Many Adapters Should You Buy? Make sure to buy enough plug adapters for all of the appliances you're bringing, from your computer to your hair drier to the battery charger for your camera. And don't wait until you get there, they usually don't sell adapters for American appliances anywhere but in America. 
• What's Up With That Grounding Prong?: That pesky third round on some American plugs is a "grounding" prong, put there to make sure that your appliance doesn't get ruined in the very off chance that the connection to the positive or negative prong is damaged. You can bypass it using the three-to-two prong adapter available at most hardware stores.
• What is Voltage and Why Should You Care? Voltage is a measure of the energy it takes to move an electrical charge from one point (the wall plug) to another (your hair drier). The difference in the amount of electric charge is measured in volts. In America, electricity flows to wall plugs at about 120V. In Europe, the current moves at about twice that rate. As you might imagine, a 240V current will literally blow your 120V appliance away.
• Is Your Appliance Dual-Voltage?: Many appliances, especially travel versions of appliances like small hairdryers, have a switch that lets you choose between 120V and 240V. You need to make sure you switch it to the correct voltage, otherwise it'll burn up.
• Will Your Device Auto-Detect Voltage? Most laptop computers video cameras, and battery chargers are made for both voltages, and will automatically detect and adjust the voltage. You'll usually find the voltage capacity of the appliance on the back of the device, stamped into the plastic. (By the way, the dual-voltage immersion heater is my favorite little device for heating water on the road.)
• Consider Transforming: If you want to travel with a few appliances that don't switch between 120 and 240V, consider packing a transformer. Americans visiting France will need to plug your 120V appliances into a 240V wall plug, so you'll need to boost the voltage with a step-up transformer. If you're from France and are traveling to America, you'll need a 240V to 120V step-down transformer.
• Wattage Matters: Buy a transformer that will handle the highest-wattage appliance you want to use. In general, the higher the wattage the device can handle, the higher the price tag of the transformer. You can buy transformers that can both step-up and step-down, which are even more expensive. Transformers are large and heavy, but worthwhile investments if you're not planning on carrying your own luggage or you're staying put for extended periods of time. 
• All adapters and devices mentioned in this primer can be ordered online at TeleAdapt, a company who has been in the business longer than anyone. (See the link in the Resources section below.) They have a huge online catalog where you can buy individual plugs or handy power-plug packs for countries or regions. They also offer 24x7 phone support around the world, and I know firsthand that they have excellent customer service.

Package Included:

• 1 x DC 12V AC Power Supply Switch CCTV Camera Power Adapter

Packing

About US

Yu Tang Technology (Shenzhen) Co.Ltd, Start business from 2002, in 2006 we had established our 

own factory which over1,800 m2 manufacturing space and has a production capacity of 300,000 set/ 

month.

YT specialized in Laptop periphery products such as: universal Laptop adapter;Brand laptop adapter;

 portable Laptop battery ,car charger,power inverter,universal travel adapter, converter, etc.

We had powered various Location of the world' customers successed, with our competitive products 

and flexibly;efficiently service.

OEM&ODM orders are welcome. We also can develop new items as per your requirements. 

Our purpose: 

We persist in our service tenet of "good quality, competitive price and best service", winning favorable

 comments from worldwide customers. 

We are looking forward to cooperating with you. 

If you are interested in any of our products, please feel free to contact us for more details!