Can you use a different power supply for a laptop?

Laptops can share power cords so long as the adapter’s wattage and connector tip is correct and compatible for each laptop you wish to use it with.

Can I charge my laptop with a different charger?

For most Android smartphones, it’s a no-brainer. In laptops, many shapes of connectors are proprietary (Apple says hello!). So, other chargers might not fit properly. While the voltage and polarity should match with the original charger, the amperage (and wattage) should exceed the required value or match it.

What happens if I use the wrong power supply?

If you’re lucky, nothing will happen, and no damage will occur. If you are unlucky, your device will be damaged. There’s a middle ground, too. Some laptops and other devices include polarity protection, which is essentially a fuse that burns out if you use the wrong polarity.

Can I use a 9V power supply on a 12V?

If you have a 12V adapter, you might wonder whether you can use it to power your 9V guitar pedals. In most cases, you cannot use a 12V adapter to power a 9V guitar pedal. Using a 12V adapter on a pedal designed to only handle 9V can completely destroy it. Those pedals will work perfectly fine with a 12V adapter.

What happens if the voltage is too high on a laptop?

If everything is the same, then things should be okay. In cases where the voltage is too high, your laptop might end up shorting due to overload. You’ll want the voltage (and polarity) on your device to match the voltage of your charger.

Does voltage matter if you have the same power supply?

Normally, if you’ve got the same kind of power supply from the same manufacturer and it can plug in at all (meaning the plugs match), voltage isn’t something you have to worry about. I’ve used different versions of Dell power supplies across a number of different Dell machines.

What happens if I use an under-powered power supply?

If you use an under-powered power supply – one that cannot provide the number of watts or amps that your laptop might require – results are unpredictable. While rare, it is possible you could damage the laptop, or even the power supply itself. More commonly, your laptop simply won’t charge,…

What should the output voltage and wattage of a laptop be?

The output voltage must be the same. The output amperage must be greater than or equal to that required by the laptop. The output wattage must be greater than or equal to that required by the laptop. People sometimes get confused about which set of numbers to pay attention to.