# Finding an aftermarket laptop power brick

#YODORegistered User regular
edited April 2011
So I'm trying to help a friend find a power supply for her Gateway T-6345u laptop. Since Gateway barely exists has shitty support, I'm looking for 3rd party stuff. Amazon has a grip of cheap Chinese versions but I'm having trouble finding one with the exact electrical ratings as the original. Basically, I see a bunch where the input voltage is correct, the output voltage/amperage/wattage is all correct, but the input amperage is higher/lower. Not everyone lists the input amperage, so I'm wondering how important that actually is. If the output specs are correct, does the input amperage matter?

help computer.

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## Posts

• Tandem Electrostatic Accelerator Registered User regular
edited April 2011
So I'm trying to help a friend find a power supply for her Gateway T-6345u laptop. Since Gateway barely exists has shitty support, I'm looking for 3rd party stuff. Amazon has a grip of cheap Chinese versions but I'm having trouble finding one with the exact electrical ratings as the original. Basically, I see a bunch where the input voltage is correct, the output voltage/amperage/wattage is all correct, but the input amperage is higher/lower. Not everyone lists the input amperage, so I'm wondering how important that actually is. If the output specs are correct, does the input amperage matter?

help computer.

How much higher/lower for the input amps? Are we talking .1-.2 Amps? If so, you should be okay to use it, all that is indicating is a less/more efficient model. As long as the output voltage/output current are correct, you should be okay.

But, just to be sure, do the math (Power=Voltage x Current). For example, if the input amps are 0.25A @ 120V, and the power supply is 70W, something fishy is up, but if the input amps are 0.7A, that makes much more sense since it also includes some loss for the power supply.

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• #YODORegistered User regular
edited April 2011
She says her orig brick says input amperage is 1.7A. I've seen bricks listing 1.2A, 1.5A, and 1.8A

Full specs on the original brick:

Input - 100-120V, 50-60 Hz, 1.7A
Output - 19V, 3.42A

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