How to find replacement for an AC Adapter

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Introduction
The chance that your AC adapter will break or get lost are high. That means you have to replace them to get your devices working again. But a lot of people don’t know how to do that safely. Here’s what you need to know when you need to substitute AC adapters.
This is important. Getting it wrong can damage your equipment, the adapter, or both. The damage can be immediate, or it can appear over time.

AC Adapter
How do you find a suitable replacement

Find your wattage requirements
You will need to find out the voltage requirements for the laptop adapter. Laptop adapters have varying voltage (V) outputs, and using the wrong laptop adapter can damage your computer. Check your user’s manual for voltage requirements information for your laptop. The output voltage will usually be listed as DC voltage. You may also want to check for product or part numbers that are compatible with your laptop model.

Find your laptop’s model number
You may find this number located on a sticker on the bottom or side of your laptop computer. If you can’t find it there, check your user manual or search your laptop’s built-in help program for the model number. You can also find it under your laptop’s system properties.

Connector Types
When looking for a replacement laptop adapter, check that the connector is going to fit the laptop’s power port. All laptops use DC power connectors, but not all connectors are going to be the same.

Amperage
Amperage, also known as current, is what gives the laptop enough power to run. It is the amount of electrical energy that flows into the laptop at any single moment. Laptops need the right amount of consistent energy flow to power all the circuits within the device. Usually, voltage is a measure of how much potential energy the laptop can use. The amperage on laptop power adapters needs to match or exceed the amperage required by the laptop.

Size of the Adapter’s tip
No, tip sizes generally aren’t standard. Measure with a caliper or ruler before you go shopping, because if the adapter doesn’t fit, none of the other specs matter.

Conclusion
Laptop model numbers can often look similar, so make sure the model numbers match exactly. Laptop adapter and power cord product descriptions typically list the manufacturer, part number and a partial description as well.

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