Can I use a charger that provides the same voltage but a higher amperage?

Yes, it is absolutely safe to charge a device with a charger that has more current capacity than needed. Since the voltage is held constant (5V), the only factor that determines current draw is the load (another term for resistance) the device places on the charger.

Can I use 12V adapter for 9V?

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.

Can I use a laptop charger with higher voltage?

Using a charger with the wrong voltage rating can potentially damage your laptop. This is typically caused by too high voltage. But using a charger with too high current won’t damage your laptop. Using a charger with too low current rating might fry the power supply, but not the laptop.

Can I use a higher amperage charger on my laptop?

You can use a higher-amperage charger on a laptop as long as it is the same voltage and has the same polarity and size of connector. Both the chargers you mention are 19v, so the voltage is correct. You’ll be able to see it if the connectors are different sized or different shaped, so that one’s easy enough.

Is it safe to use a higher amp power supply?

If the power source has more than the required current, it should work quite nicely, It won’t stress either the power source or the device being powered. Yes, it is safe to use a greater amperage. The device will only draw what it needs.

What is the amperage rating of a power supply?

The amperage rating of a charger or power supply is the maximum it can supply. A device being charged will only take as much amperage as it requires. If your device needs 0.5 amps to charge, and your charger is rated at 1.0 amps, only 0.5 amps will be used.

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.