What are amps mean-Definition, differences between volts



  Main content:

  1. 1.What are amps in electricity
  2. 2.Differences between amps, volts,watts and amp hour
  3. 3.How to measure amps
  4. 4.How many amps are in a volt?
  5. 5.What Is an Amp-Hour?
  6. 6.How long will a 100 amp-hour battery last?
  7. 7.Is a higher amp battery charger better?
  8. 8.Highest amperage 18650 Lithium-ion battery
  9. 9.How to convert mA to A or mAh to Ah?
  10. 10.What happens if I put a higher amp battery in my car?
  11. 11.Do amps matter?
    1. ①Do higher amps mean more power?
    2. ②Do higher amps require bigger wires?
    3. ③Do higher amps increase the voltage drop?
    4. ④Amps, volts,watts, how to design an electrical system
  12. 12.What are amps- All the FAQs about amps
    1. ①Which is more powerful amp or volt?
    2. ②Does higher amp damage battery?
    3. ③Does higher amperage mean faster charging?
    4. ④What happens if amps are too high?
    5. ⑤How many amps does a fridge use?
    6. ⑥What happens if you plug too many things into an outlet?
  13. 13.Conclusion

You may wonder what are amps and do amps matter? Since its existence, electricity has changed the face of the earth. Powering almost everything in our lives, electricity is among the most common energies in the world. Many products like portable devices, houshold appliances, home energy storage and electric vehicles are powered by electricity.

 Whether plugged into a grid or equipped with batteries, there are many specs to consider when buying those products. Among information written in datasheets, you will have numbers measured in amps, voltage, wattage, and other different units. 

Understanding each number and its associated unit and the difference between them could be helpful for users. This article will tell you in details what are amps with useful example, how to measure it and every relevant concept.That will facilitate making the right choice of what to buy and also help you maintain the product. 

1.Understanding what are amps in electricity

What is an amp in electricity

Amps always referred to with the letter "A" is short of Ampere. It's the used unit for electrical current in the International System "SI". The word comes from the name of the French physicist and mathematician André-Marie Ampère who laid the basics of electrodynamics. 

To understand what are amps for your electrical devices, you need to know what electric current is in the first place. An electric current is a "flow" of electrically charged particles like electrons and ions through a conductor. Amperage is the number of those electrons flowing through a circuit. 

The best analogy of what are amps is the water flow rate in pipes. In order to get the right dimensions of pipes and other components of a water system, you measure flow rate. For electricity, you measure Amps to get the best combination for a circuit. 

Amperage is an important factor in choosing some components like batteries. Currently, the highest Amps are found in lithium-ion batteries.

2.Differences between amps, volts,watts and amp hour

Asking what are amps also help you to understand differences between amps, volts,watts and amp hour. Amps, Watts, Volts, and Amp-hours are all units to measure electricity-related parameters. They are found on datasheets and each of them refers to a specific feature. Understanding different units can help you choose what to purchase.

Ampere is the unit for measuring electric current flow. Volt is the unit of electric potential which can also be called electromotive force. When you multiply the current and the electric potential, you find the power, its unit is Watt. 

On the other hand, Amp-hour is the unit of electricity storage capacity. It is the result of multiplying the amount of current by a period of time. This parameter is among the most important specs to check for a battery. Lithium-ion batteries are specially designed to have high amp-hours numbers.

3.How to measure amps

How to measure amps

While making a circuit you may need to check the amperage. Having an idea about the amount of current in the circuit could be a way to identify problems. Also, if you still don't quite understand the definition about amps, the question what an amps might also be solved by measuring it.For example, if you're using batteries it is recommended to check them frequently to maintain their health state.

Measuring amperage is very easy, simply you need to have an amper-meter or a multimeter. To get an accurate measurement set the meter on a higher number than what you are expecting. Make sure you choose the right kind of current AC or DC. Connect the probs to 2 different points of the circuits, or the battery terminals.

 In case you are testing high voltage circuits, don't touch anything with your bare hands. Only touch the insulator and make sure you are wearing thick shoes or special boots.

4.How many amps are in a volt?

One volt is the difference in electric potential between two terminals of a component in a circuit when an electric current of one ampere dissipates one watt of power.

5.What is an Amp-Hour?

What Is an Amp-Hour

The next question after what an amps can be What Is an Amp-Hour.Amper hour, usually referred to as "Ah" is the unit of measurement of a battery capacity.

It's the amount of current in a circuit during a specific period of time. Amp-hour is among the most important things to consider while buying a battery. That number will tell you how long you can use the battery before it needs to be recharged. 

lithium-ion batteries are the most recent battery types. They have the highest Amp-hour rates among competitors. 

6.How long will a 100 amp-hour battery last?

A 100 Ah battery would last for about 20 hours if it's providing a 5 Amps current. Meaning that a 12v 100 Ah battery's endurance depends on the amount of current in the circuit. for example, if the load is 10A the duration will drop to 10 hours. Knowing power specs will allow you to estimate the time your batteries will last. 

7.Is a higher amp battery charger better?

Charging a battery requires a steady flow of power, this will allow it to regain energy safely and effectively. Chargers always have higher amperage than the battery's output. in case the charger's amperage is lower than the battery, it will be overloaded. The charger will face problems with providing enough power so it will overheat. If this happens frequently its life duration will be very short and it may even end by catching fire.

On the other hand, too high charger amperage may damage the battery by overheating and overcharging it. The best recommendation is to check the manuals for charger specs to avoid problems.

lithium-ion batteries are considered smart batteries, they have a management system that solves these problems. The BMS allows communication between the battery and the charger providing the best current configuration.

8.Highest amperage 18650 Lithium-ion battery

Highest amperage 18650 Lithium-ion battery

Indeed, what an amps should be a important question since we can know which battery is the best after understanding that. lithium-ion batteries are known for their high capacities and lightweight. The 18650 lithium batteries are rechargeable cylindrical batteries. They are used in a variety of products, the most common one is vapes. They may also be grouped together to make a battery pack to power small electric scooters. 

The highest amperage of a 18650 battery is 30A, that model has a capacity of 3500 mAh and a 3,7v. 

9.How to convert mA to A or mAh to Ah?

The main thing to put in mind is the difference between Amps "A" and Amps-Hours "Ah". 

The amps are the unit to measure the current flow in a circuit. The Amps hours represent the capacity to supply that current for a specific period of time. 

To convert from mA to A or from mAh to Ah you simply need to divide by 1000. For example, you may need this conversion when the specs of the battery and the motor are not in the same unit. 

10.What happens if I put a higher amp battery in my car?

Installing a battery with higher capacity on your car will make it last longer. The higher the Ah rate of the battery the more time it takes to drain. Meaning that you'll save money by extending the replacement time. However, you may face some problems. High capacity batteries could be bigger than lower ones, in this case, the new battery may not fit the space. 

The main problem of higher capacity batteries could be in their high CCA (cold cranking amps). It is the current provided for a certain period of time. In some situations, the high intensity provided by the battery could damage some of the electronics if they are not well protected. That occurs when the Ah is very high compared to the old battery. In general, those batteries won't fit as they will be bigger in size. 

You can use a lithium-ion battery, it has better endurance and lasts longer than ordinary batteries even with the same Ah specs.

11.Do amps matter?

Do amps matter

①Do higher amps mean more power?

The power is the product of voltage and current. When one of them increases the power will automatically increase. That means the more amps the more power you will have unless voltage decreases. 

②Do higher amps require bigger wires?

An electric circuit is made of components connected together with wires. In order to have good functioning, the current should be stable. The wider the wire the better it transmits electrons through it. So, amperage depends on the dimensions and types of wires. The most important thing about wire size is overheating problems. When a wire is overloaded it may overheat and cause short circuits and fire. 

③Do higher amps increase the voltage drop?

Actually, voltage and amperage are related to each other. For a low current, we have a low voltage and higher voltages will be associated with higher currents. 

④Amps, volts,watts, how to design an electrical system

To design any electrical system, you need to fix the needs and the expectations. You have to choose components that match each other's specs. For example, you don't want to get a low-capacity battery for powering an electric motor. A good understanding of voltage, amperage, and wattage is a must for designing circuits. 

12.what are amps- All the FAQs about amps

①Which is more powerful amp or volt?

A system with higher voltage has batter efficiency than one with lower voltage. As in that situation, there is less energy loss for the same amount of power draw.

②Does higher amp damage battery?

For charging a battery, higher amps mean the battery will charge better. If the amperage of the charger isn't convenient, the charger may be overloaded and damaged.

③Does higher amperage mean faster charging?

Does higher amperage mean faster charging

Absolutely, the higher the amperage the faster the batteries will be charged. You can notice that fast-charging lithium batteries have high amps chargers. 

④What happens if amps are too high?

The amperage should be perfectly balanced, too high current flow will damage parts of the circuit. If you're using a charger with too high amperage that will overheat the battery and may cause a fire.

⑤How many amps does a fridge use?

Amperage for household fridges is between 3 and 5A. To run fridges safely you need a 15 to 20 dedicated circuit. The average amperage is lower as the compressor won't be working all the time. Energy consumption is measured in kilowatt-hours KWh.

⑥What happens if you plug too many things into an outlet?

Plugging multiple things into one outlet could be dangerous. Scientifically speaking, that will create a huge current load in one specific point. This overload could end up triggering a circuit breaker, causing failure, or even starting a fire. Current overload creates a temperature rise in wires and connections, if it gets too high parts may ignite. 

Always avoid plugging many products together and especially those who use a lot of power like hair dryers or ovens. 


To sum it up, what an amps anyway? amperage is the current flow in an electric circuit. Understanding the concept of amps, amps-hours, voltage, watt and other units is very important. Knowing the role and the meaning of each unit will help you choose tour products and make right comparison between them.

Batteries are usually characterized by their amperage per hour to measure their capacity. That number determines how long they will last before they are discharged. For a charger, the amps determine its capacity to charge a battery effectively and also safely.

Amperage should be well balanced to make sure systems work properly.