HP Pavilion DV 4 Laptop AC Adapter

All AC Adapters are not created Equal

There doesn�t seem to be much difficulty in the purchase of a replacement HP Pavilion DV 4 Laptop AC Adapter. AC Adapters use long established technology that is relatively foolproof. So, why not just buy the cheapest replacement HP Pavilion DV 4 Laptop AC Adapter that you can find? The answer is summed up in one word: Safety.

So consider the following when purchasing a replacement HP Pavilion DV 4 Laptop AC Adapter:

1. The HP Pavilion DV 4 Laptop AC Adapter function is to take the 110-120 volts that comes from a wall outlet and drastically reduce it to the voltage that is required by your notebook, laptop, or other device. If a good quality charger fails, it will have an internal fuse which halts the flow of high voltage electricity to your HP laptop. A very low priced HP Pavilion DV 4 Laptop AC Adapter may not possess this protective feature.
2. Be sure to confirm that the Output Voltage from the replacement ac adapter matches the Output Voltage specified on the original equipment for your HP. Voltages that are more than a single volt higher than the specifications on your original HP Pavilion DV 4 Laptop AC Adapter can seriously damage your laptop or other device. Voltage that are lower may not provide enough power for your laptop or other device to function properly. This information is clearly provided on the label of your HP Pavilion DV 4 Laptop AC Adapter.
3. Be sure to confirm that the amperage (Amps) provided by the charger is at least equal to the Amps provided by the original equipment for your HP. Since amperage is �pulled� by your laptop from the adapter it is important that the amount of available amperage provided by the replacement HP Pavilion DV 4 Laptop AC Adapter is at least as much as that supplied by the original adapter. If the amperage provided by the replacement charger is less than provided by the original ac adapter there will be an overheating condition created in both the adapter and your laptop. Also, it should be noted that amperage that is higher than the original HP Pavilion DV 4 Laptop AC Adapter amperage is not a problem at all and is beneficial in some cases. The amperage (Amps) information is clearly provided on the label of your adapter.
4. When you first receive your replacement HP Pavilion DV 4 Laptop AC Adapter you should check the connector to determine that is correct. Before you plug the ac adapter into a wall outlet, insert the connector end into your laptop computer or other device. Does it fit firmly with no “wiggle room�? If the connection to your HP is loose, it will not maintain a good connection and your laptop may not be correctly powered.

While the technology used in a high quality HP Pavilion DV 4 Laptop AC Adapter is not �high tech�, it is important to recognize that your laptop or other device is dependant on the ac adapter to operated and recharge its internal battery. It is relatively easy for an unscrupulous manufacturer to skip key elements in the manufacturing process to produce an operating HP Pavilion DV 4 Laptop AC Adapter that appears to work properly but which has flaws that can result in damage to your laptop or even fire hazard.

Since a replacement ac adapters can be expected to last for several years without problems, never buy a replacement HP Pavilion DV 4 Laptop AC Adapter from a supplier who offers less than a One Year Warranty. Also, since most problems with a faulty or inferior charger occur in the first weeks of operation, always buy from a supplier who offers at least a 30 day Money Back Guarantee.

One such supplier is Replacement Express.