Would my Dell 90W power adapter work for DV6TQE? Or it would hurt it?

I just tried my Dell 90W power adapter on my DV6TQE and it works? However, I worry if it would hurt it? Any comments?

Thanks

 

Do you have the original power adapter?
If you do check the output ratings on it. If they match the output ratings on the Dell power adapter and the plugs are the same then yes, you can use it without worrying.

 

Here are what I saw in the Output section for both power adapter:

HP: 120W, 18.5V, 6.5A
Dell: 90W, 19.5v, 4.62A

I plugged the DV6T into my Dell and ran Combat Arms, I got around 60fps using Fraps and it is about the same fps as when I plug it into the HP power adapter.

Am I OK to use the Dell one - I want to move around the house and I can just leave the Dell one plugged into the outlet downstairs and leave the HP one upstairs.

Thanks

 

By using the Dell one you are basically undervolting your system. That is, you are not supplying supplying your system with the factory recommended electrical supply. This also means that your system will not run at peak performace.
Many people use undervolting to get better battery life and to solve overhearting issues.
As long as the system is stable you can use the Dell power adapter with the HP but I would not use the HP power adapter with whatever laptop the dell one goes to.

So theoretically if the system is stable
Dell power adapter to HP laptop -- Yes
HP power adapter to Dell Laptop -- No

I cannot 100% guarantee this but based on what I know about electronics it should work.

Fry

 

Thank you for all the information you have provided here.

 

If the peak power consumption is above that of the output of the Dell power adapter you put strain on it and run the risk of shortening its lifespan/frying it.

You're not really undervolting as the laptop will probably draw power from battery if the power supply isn't providing enough juice.

 

So, it could fry my laptop if the laptop is trying to draw more power than the power adapter can provide?

 

Probably not the laptop, I meant the power adapter.

 

the hp 90w adapter is 4.74A/19V

you might be a little pushing it with 4.62A, but then again, the worst thing that can happen is the adapter getting too hot/burn out, the laptop will be unaffected.

you can switch to coolest mode/disable turbo. with turbo disabled you should be well within the limit of the 90W adapter.

 

I was just thinking the same thing. I wasn't brave enough to try it, good to know it works.

However, I tested the power supplies with a multi-meter. Both supplies have 3 points of contact on the laptop connector: an outer ring, an inner ring, and a pin in the middle. On the HP supply, the inner ring and pin are both at 18.5 volts. On the Dell, the inner ring is at 19.5 volts, and the pin is around 1 or 2 volts (it was hard to get a good reading, since I had to touch the probe to just the tiny pin).

I guess that the inner pin is some sort of smart sensor on the Dell. It's why I didn't try plugging the dv6t into the dell. Good to know it worked for you.

j