## Can I use a power supply with higher amps?

As the article states, you do want to match voltages between the power supply and device, but you can us a power supply with more amps than needed. The device will only draw as much current (Amps) as it needs at the time.

## Can I use 12V 2A for 12V 1a?

Can you use a 12V 2a charger on a 12V 1.5 a device or 12v 1a device? You can use a 12V supply with a higher current rating, but not a lower one. The device will only draw the current it wants, but the supply has to able to put out the maximum current the device wants.

**Can I use a charger with higher amperage than the original?**

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 a charger with lower amperage than the original?

We recommend higher amperage to ensure cooler power supply and optimal charge time. If you get a charger with amperage less than your original power supply, you risk overheating your charger, burning it and in many case your device will stop functioning and/or charging.

### What happens if amps are too high?

There should be no upper limit for how much amps a power supply provides. It only draws as much as it needs when operating normally. If you give it a power supply capable of 50A, you can turn an annoying short circuit into a catastrophic incident with sparks and burning electronics and flying shards of plastic.

**What happens if amps are too low?**

If the rating is too low for the device, it will be trying to get more electricity from the supply than the supply can provide, and so it will get hot and possibly explode.

#### Can I use 12V 2A ups on a 12V 0.5 a router?

Nope. Way to low a current capacity, Needs at least 1 or greater current rating. Can I power a router rated 12V 1.5 amps on a 24V 0.8A power adapter?

#### Can I use 12V 5A for 12V 3a?

No. A device only draws as much current as it needs. No more, no less. The rating on the supply is simply saying that it can deliver up to 3 amps as needed, meaning a circuit designed for a 1 amp supply will run on it without a problem.

**Can I charge 500ma with 1A?**

No. The charging circuitry in the device will only draw as much current as it wants. The power supply being rated at 2A just means it is capable of supplying that current.

## What kills voltage or amps?

electrical current

An electrical current at 1,000 volts is no more deadly than a current at 100 volts, but tiny changes in amperage can mean the difference between life and death when a person receives an electrical shock.

## How many volts are in an amp?

Watts are calculated by multiplying the current (measured in amps) by the electrical pressure (measured in volts). Amp (Ampere) – unit of measure of the flow rate of current in an electrical circuit. One amp is the amount of current when one volt of electrical pressure is applied against one ohm of resistance.

**Is it better to have higher amps or volts?**

A higher voltage system is more efficient than a lower voltage since it experiences less energy loss from resistance given the same amount of power draw.

### Do amps and volts need to match?

Volts & Amps & Compatibility

In general, for power supplies or chargers: The output voltage must match. The output amperage must match or be greater than that required. The polarity of the output connection must be correct.

### Can I use 9V adapter for 8v?

No. If you are going to use another adapter use one with the same voltage and at least the same amperage. If you use one with less amperage then the device might try draw more juice and burn out the new adapter.

**What happens if I use a 12V adapter on a 9V device?**

Using a 12V adapter on a pedal designed to only handle 9V can completely destroy it. There are some guitar pedals built to handle voltages higher than 9V. Those pedals will work perfectly fine with a 12V adapter.

#### Can I use 500ma instead of 300ma?

The unit normally uses 2 AAA batteries. rating and still be OK to use. the downstream components. Using a 500 mA rated wart on a 300 mA rated load, you’re probably OK.

#### Can I charge 500mA with 2A?

You most definitely can. Not only can you use it to charge a 500mA mobile but any mobile that draws a maximum of 2A current, the voltage requirement being 5V of course. That is what the 2A charger is made for. It can supply a maximum of 2A current.

**How many amps are in a volt?**

one ampere

Volt – unit of measure of the electrical force or pressure which causes an electricity current to flow in a circuit. One volt is the amount of pressure required to cause one ampere of current to flow against one ohm of resistance.

## How many volts is 4 amps?

Equivalent Amps and Volts Measurements

Current | Voltage | Power |
---|---|---|

4 Amps | 21.25 Volts | 85 Watts |

4 Amps | 22.5 Volts | 90 Watts |

4 Amps | 23.75 Volts | 95 Watts |

4 Amps | 25 Volts | 100 Watts |

## How do you convert DC volts to amps?

The formula to convert volts to amps at a fixed wattage is: amps = watts / volts.

**How do I calculate amps?**

Amps = Watts / Volts

Examples: 4160 Watts / 208 Volts = 20 Amps. 3600 Watts / 240 Volts = 15 Amps.

### What happens if amp is too high?

As long as the correct voltage is used, a device will draw only the amperage it needs, meaning there will not be “too many amps”. If an incorrect voltage is used — say a higher voltage than the device is rated to accept — then yes, too many amps may be drawn and the device can be damaged.

### How do you convert mA to amps?

To convert milliamps to amps, divide amps by 1000.

**Will too much amperage hurt a device?**

#### Can I charge a 9V battery with a 12V charger?

Similarly, you can charge a 9V battery with a 12V charger, and we show it in more detail below with Lithium-ion and NiMH batteries . The 9V li-ion battery is made of two 3.6V cells lending it a nominal voltage of 8.4. To safely recharge it you need a voltage source of 8.4V.