How do I find the correct charger for this laptop?

I copy the following checklist from website http://www.topmic.com/

1) Output Voltage is within +/- 5% of your old charger's output.

For example, if your old charger provides 19.5V, then you can use a charger that provides 20.5V or 18.5V.

2) Output Current is the same or higher than that of your old charger.

For example, if your original adapter provides 3.42 Amps, then you can use a charger that provides 3.42 Amps, 3.9 Amps or higher.

3) Connector tip must fit securely into your laptop.

First, you need to find the right connect tip, there are many kind of tip for 90 W adapter. You can easily find it by searching with your laptop model.

You may consider getting the 90W charger from company like topmic.com

They are few of the online stores i know who offer a charger under lifetime warranty. Since charger won't last forever, lifetime coverage can certainly save your some money.

Wish the Best.

What's your laptop model? Do you still keep the original charger? If so, you may find the modle number or part number on the power brick. Search it, and you'll find exactly what you need.

If you do not carry it any longer, you should make sure the following three conditons meet before buying a new charger:

1) Output Voltage is within +/- 5% of your old charger's output.

For example, if your old charger provides 19.5V, then you can use a charger that provides 20.5V or 18.5V.

2) Output Current is the same or higher than that of your old charger.

For example, if your original adapter provides 3.42 Amps, then you can use a charger that provides 3.42 Amps, 3.9 Amps or higher.

3) Connector tip must fit securely into your laptop.

And I want to recommend one site carrying lots of chargers with reasonable price.

http://www.chargerbuy.com/

Google will probably help you

I find most of mine on ebay Make sure that the output voltage is 19v but the amps/W out can be more

The universal ones usually have a low power output unless they are priced very high.

Just one more thing depending on where you are make sure the input is 100/110-240v. They all are these days but worth a check

Buy a Universal Charger at best buy, Radio Shack, etc.

just google replacement battery for your MODEL Computer. :)