Contributing

Can you use a 19V adapter on a 20v device?

Standard

Can you use a 19V adapter on a 20v device?

Yes: technically it can be used, but you need a higher amount of power (watt). if the adapter is 19V 6A, it might start the PC but you will have strange side effects.

How do I match a DC adapter?

Remember: the input of the device should be the same as the output of the adapter. This includes polarity. If the device has a DC input of +12V / 5.4A, get an adapter with a DC output of +12V / 5.4A. If you have a universal adapter, make sure it has the proper current rating and choose the correct voltage and polarity.

How do I know what size DC adapter I need?

If you go into a shop you can compare and test the connector size, or if you are technically minded you can measure the size of the port and pin yourself. If you are measuring you need the diameter of the center pin for the (ID) and the inner diameter of the port (OD).

What is a DC adapter used for?

An AC-DC power supply or adapter is an electrical device that obtains electricity from a grid-based power supply and converts it into a different current, frequency, and voltage. AC-DC power supplies are necessary to provide the right power that an electrical component needs.

Can I use 19.5V 20V?

Sure, 19.5 is very close to 20V and the 19.5V power supply can easily handle the 4.5A max of the lap top. Normally any device has a voltage range, not a tight fixed voltage requirement. I bet your laptop could operate over a +/-1V range, even more.

Can I use a 19.5V charger on a 18.5 V laptop?

so, yes you can use.. It should work. is it worth the risk? your laptop’s charging/regulator circuit is obviously designed to expect 18.5V, not 19.5V.

What happens if I use a higher voltage adapter?

Using an adapter with a higher voltage will cause the connected device to detect an overvoltage. An AC adapter supplying electricity at a higher voltage than required will cause the connected device to run hotter.

Is power adapter same as charger?

Adapters for battery-powered equipment may be described as chargers or rechargers (see also battery charger). AC adapters are used with electrical devices that require power but do not contain internal components to derive the required voltage and power from mains power.