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Laptop power supply.

By mgradybruin ·
How hot should my power supply be getting on my lap top? If I plug it in, the adapter and the power supplied seem to get extremely hot. the same thing happens with just using the battery. What should I do?

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Laptop power supply.

by BDavis4139 In reply to Laptop power supply.

Howdy, I have had similar conditions. When my batteries were very discharged, my adapter would run very hot. I got rid of the problem by getting an adapter with a 50% higher maximum output current rating. Keep the voltage rating the same though. Often the chargers are under-rated for a sustained peak load. Hope this does it for you, Don :)

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Laptop power supply.

by mgradybruin In reply to Laptop power supply.

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Laptop power supply.

by WanabeDrSean In reply to Laptop power supply.

whatever you do do not follow the advice in answer 1. your battery could start on fire or the traces on the system bourd could burn up as soon as you plug it in.

to reply to this question it is verry common for your power supply to reach tempretures in excess of 120 degrees however some notebook manufactuerers dell, gateway, and compaq have all issued recalls on some notebook models batteries and power supplys because of possible fire hazard or melting problems. check with your manufacturerand then call them back and check again it would help me reply more if I knew model and make info. also the laptop itself will get hot just because of the processor you might be expieriencing this also

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Laptop power supply.

by WanabeDrSean In reply to Laptop power supply.

Keep in mind that people far smarter than I or you came up with the power distribution system in this laptop and used the best suited power supply for it. you cannot argue with this statement if you do you are a moron

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Laptop power supply.

by WanabeDrSean In reply to Laptop power supply.

I just got an email on this today check out this url this happens to all notebook manufacturers
http://www.compaq.com/products/notebooks/adapterrecall/

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Laptop power supply.

by mgradybruin In reply to Laptop power supply.

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Laptop power supply.

by donmars In reply to Laptop power supply.

Unlike what answer #2 thinks answer #1 is fairly accurate. A larger wattage power supply (wattage=current x voltage) with the same charging voltage, will generate less heat given the same load conditions. Make sure the volage remains the same. The curent supplied should only not be less than the battery requires... then you can fry stuff.

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Laptop power supply.

by mgradybruin In reply to Laptop power supply.

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Laptop power supply.

by richard_barsby In reply to Laptop power supply.

Hi answer 2 is incorrect using a higher wattage psu is fine the only time this can prove a problem is if the laptop has a fault and as yours works then thats not the case anyway all laptops that I have repaired have a fuse on the DC input. Laptops have an internal battery charger to limit and control the charge rate hence the external psu voltage always being higher than the battery voltage. Back to the original question yes they do run quite warm just look at the size of them and typically providing 19V @ 3A at best 80% efficiency thats aprox 6W dissipated heat in the size of 2.5"x 1" x 3.5" it will get warm.

Rich

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Laptop power supply.

by mgradybruin In reply to Laptop power supply.

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