Questions about purchasing a Laptop Charger

Hey my friend asked me to look for an Adapter Charger for his Dell laptop. So I looked on the back of the laptop for the information and found the the details for the correct charger. It said Dell Inspiron E1705 PA-10 AC Adapter 80w but I can only find ones that say 90w. Can anyone tell me if this is a big deal or not?

 

You need to know the required voltage and Amperage. You need to match the voltage exactly while the amperage needs to be the same or HIGHER. The wattage is determined by multiplying the voltage times the amperage. Without knowing the required voltage it isn't possible to determine if the 90W adapter can replace the 80W adapter.

If the original adapter is a 19.5V adapter with an amperage rating of 4.1A (19.5 x 4.1 = 80) and the new is 19.5V with an amperage rating of 4.6A (19.5 x 4.6 = 90) then you can use the 90W to replace the 80W.

 

As long as the adapter is for Dell (Dell logo on the adapter) it should be compatible. On my Precision M70, I can use a 65 watt, a 90 watt or a 130 watt adapter. I'm using a 90 watt currently and can run USB hard drives and optical drives on all four USB ports at once without overtaxing the power supply or adversely affecting the performance of the laptop.

 

All Dell laptop adapters use 19.5 volts and are rated 3.3 amps (65 watts) or higher. Since Mista Shadow's original adapter is rated at 80 watts, the 90 watt, or even the 130 watt adapter, would work fine. He'd have a little power in reserve, if needed, like I do.

 

Everything I said still applies, nothing changes.

I don't know if anyone can guarantee that ALL Dell adapters are 19.5V which is why it's better to check the voltage and make sure rather than assume.

 

Dear fellow Geeks,

I did the calculations on the back of the adapter and it does support 90w. It was 19.5 x 4.6= 89.7. So thanks to all of you.