Electricity Basic 101: What Are Amperes (Amps)

Electricity Basic 101: What Are Amperes (Amps)

Most of us need to understand the distinction between a 50A and 65A battery, and we need to comprehend how the voltage from the wall outlet provides sufficient power to operate a small light bulb and a powerful microwave, even though electricity powers so much of our daily existence. V, I, and R are the three fundamental elements of electricity. Resistance is measured in ohms, while current is measured in amps. Voltage is quantified in volts.

what is mah

You will frequently encounter the fundamental concept of amps while working on any electrical system. This page provides comprehensive information on amps, including the definition, the relationship between amps, watts, volts, and ohms, and how to measure them. In addition, the Jackery Portable Power Station is a robust rechargeable generator that can provide sufficient power to charge large and small appliances with higher capacity.

Key Takeaways:

  • An alternative method for determining the quantity of electricity flowing through a circuit is amperage.

  • The formula functions according to the principle that the ratio of power (watts) to pressure (volts) determines the pace of electrical current (amps). Amp calculations can be utilized to estimate the charging speeds of battery-powered devices.

  • To quantify amps, an instrument known as an "ammeter" is required.

  • Amps, watts, volts, and ohms are four fundamental concepts you will encounter when repairing electrical systems.

  • Here, it is highly recommended that Jackery Explorer 2000 Pro, 1000 Pro, and 500 charge indoor and outdoor appliances with higher capacities.

What Are Amperes (Amps)?

An alternative method for determining the quantity of electricity flowing through a circuit is amperage. Amperage denotes the number of electrons traversing the wire or the "rate" at which current flows through the circuit. The unit of measurement for amperage is amps (or amperes). 

Upon inspecting the service panel, which is also referred to as the breaker box, one may locate amps. Circuit breakers are labeled with 15, 20, and 30 amps, respectively. The greater the amperage, the greater the capacity of the circuit to conduct electricity. Once more, 30-amp circuits power large appliances such as air conditioners, washers, and dryers, whereas 20-amp or 15-amp circuits power most outlets in a residence.

What Is Ampere-Hour (Ah)? 

Ampere hours, also denoted as Ah or amp hours, refer to the quantity of energy stored in a battery sufficient to facilitate the passage of one ampere of current for one hour. An alternative formulation would be to define 1 Ah as the capacity of a battery to supply amperage for one hour.  

Ampere-Hour (Ah) = Ampere (A) x Hour (H)

Typically, large batteries are quantified in ampere-hours. On the contrary, the rating for tiny batteries such as personal vaporizers and notebook computers, as well as standard AA and AAA batteries, is expressed in milliampere hours (mAh). A minimum 4Ah capacity is typically indicated conspicuously on a battery, similar to the 5Ah capacity depicted in the image.

How to Calculate Amps?

The formula for calculating amperage for AC electricity is the simplest:

Ampere (A) = Wattage (W) / Voltage (V)

This formula functions according to the principle that the ratio of power (watts) to pressure (volts) determines the pace of electrical current (amps), as stated in Ohm's Law. As an illustration, an energy star-rated refrigerator, on average, necessitates a constant wattage of 700W. In Australia, virtually all household appliances operate on 240V.

Then, the amperes go 3A = 700W / 240V. 

Should you possess knowledge of the resistance (ohms) and voltage (almost always 240V) but not the wattage, it is possible to compute the amperage of the appliance. The Ohm's law stipulates:

Current (A) = Voltage (V) / Resistance (Ω)

Using a refrigerator once more, 240V divided by 24Ωequals 10A. Ohms are seldom (if ever) specified in appliance manuals or on product websites. Resistance is subject to variation due to many factors, and it is a less dependable unit of measurement than volts, amps, or watts.    

Jackery portable power station

Why Do Amps Calculations Matter?

Amp calculations can be utilized to estimate the charging speeds of battery-powered devices, make decisions regarding the electrical system of a residence, and implement residential solar power systems.

Reduce Overloading: Conventional residential wiring and backup power sources have a finite capacity to withstand electrical loads before malfunctioning. The electrical system in your home is safeguarded by a circuit board that incorporates circuit breakers. Amperage specifies the quantity of current that a circuit breaker can handle before it shuts off. Typical residential circuit breaker ratings are 15A, 20A, or 30A. 
Increase Charge Speed: You may have observed that various chargers can charge your device at varying rates. Typically, the distinction between converters lies in their amp rating. Amps govern the rate at which the device is charged, whereas voltage guarantees that it receives an adequate charge. At higher amps, the battery charges more rapidly because it gets more energy. Increased amperage supplies a device with a greater quantity of electricity, which expedites the charging process.  
Beneficial for Solar System: When installing a solar power system for residential use and procuring individual balance components such as a solar battery, inverter, and charge controller, it is crucial to verify the compatibility of these elements with your photovoltaic panels.
A critical factor in determining the safety and effectiveness of a system is verifying that the electrical capacity, including amperage, is consistent throughout the entire system. By accurately calculating the amperage requirements, one can avoid purchasing electrical components that are oversized or undersized. Inaccurate amperage will cause diminished performance and expose the system to hazardous electrical conditions. 

How to Measure Amps? 

To quantify amps, an instrument known as an "ammeter" is required. In amps, an ammeter (or ampere meter) measures electric current. Regardless of whether it is detecting alternating current (AC) or direct current (DC), the unit of measurement is amps (amperes). Consequently, the ammeter is a device that quantifies current flows in amps. (Ammeters are sometimes illustrated by a circle containing the letter "A" within it.) 

Ammeters quantify the amount of current passing through a component. The ammeter should be connected in series with the element. "In series" denotes consecutively. Current is quantified using an ammeter; it represents the electric current passing through the device.

What Are The Types of Ammeters?

Primarily, two varieties of ammeters exist: the shunt meter and the amp clamp. Electrical shunt ammeters are frequently employed in installations that utilize permanent DC (direct current). By connecting these components in series on the negative terminal of an electrical circuit, the entirety of the system's current is directed through them. The shunt subsequently displays the current it has detected. 

Additionally, amps can be measured using a hall sensor. Installation of these devices does not require wire breaking; they are frequently found in portable amp-measuring devices known as amp clamps. Integrated hinged jaws on an amp clamp enable the meter to be clamped to a wire, cable, or another circuit component to measure current.

What Is Ampacity?

The capacity of wires and devices utilized in a system for a specific purpose is denoted by the term. Ampacity is critical because it specifies the utmost current that a wire or cable can safely transport. Therefore, when selecting wiring or cord for a specific application in your RV, for instance, you must be sure of the cable's ampacity rating. Generally, electrical component manufacturers indicate the load capacity or range of a product in volts, amps, or megawatts. This information can be utilized to determine ampacity by dividing wattage by voltage.

What Are The Amps, Volts, Watts, Ohms in Electricity? 

Watts, volts, and amps are fundamental concepts in electrical systems. The resistance, which is measured in ohms, is the fourth factor. Even though it may appear daunting, an engineering degree is optional to comprehend electricity or how to benefit from it.

Volts: Volts, denoted by the letter "V" in electrical equations, are the standard units of measurement for electrical voltage. The voltage between any two points in an electrical circuit is the difference in electrical potential or the number of electrons.

Watts: Among these various electrical units, wattage is likely the most well-known. You have purchased 50-watt and 60-watt light bulbs with the general knowledge that a 60-watt bulb will produce more light than a 40-watt bulb for years. Then why?

Wattage refers to the quantity of electricity consumed by an electrical device. Wattage can also be conceptualized as "electricity at work"; it refers to the amount of power required to accomplish a specific task, such as turning on a light bulb (20 to 75 watts) or operating a refrigerator (600 to 900 watts).

Ohms: Wires comprise circuits, and wires do not conduct electricity ideally. Most residential electrical wiring is composed of copper or aluminum, which possess a certain degree of inherent resistance or friction that impedes the velocity of electric current. As electrical current flows through appliances and devices, the machines generate their resistance. Ohms, the unit of resistance measurement, is derived from the name of the German mathematician and physicist Georg Simon Ohm.

What Are The Relations of Amps, Volts, and Watts?

Understanding the terms and formulas listed on this page is crucial for calculating the power output and dimensions of a solar power system, regardless of whether it is grid-connected or off-grid.  

relations of watts volts amp
A formula exists as well for power. P represents power in watts, I denotes current in amperes, and V signifies the potential difference (or voltage drop) across the component in volts, as expressed in this formula.

It is critical to determine how much current flows to the load to choose the proper conductor. When determining voltage loss, the distance is a factor to be considered. We aim to prevent voltage loss from exceeding 3%. Current is the other half of this calculation. A larger wire is required to conduct more current. When given the option, the higher voltage is preferable.

Additionally, these formulas can be employed to compute AC (alternating current) wattage to ascertain the dimensions of an inverter, which transforms DC electricity generated by a solar array into AC, thereby enabling the operation of commercial and residential lighting and appliances. A face plate is a component of devices that contains all of their electrical data. 

Using this formula to calculate the daily power consumption is essential when estimating a solar power system. The Jackery Solar Generator is a portable solar system that integrates solar panels with a mobile power station to supply sufficient power for outdoor activities such as camping, RVing, off-grid living, and home backup. Keep reading to gain further insights into Jackery.

Jackery Portable Power Stations Explained

The Jackery Portable Power Station is only one of the many solar products for which Jackery is regarded as a leading manufacturer. Up to 30% lighter and 30% smaller than competing options. The ergonomic shape of the carry handle makes it convenient for transport to any new destination. Jackery provides portable power solutions from 240W to 2000W, sufficient to charge 99% of electronic devices.     

how jackery solar generator works
If you use a high-quality lithium battery with a larger capacity (Wh), you can save up to 80% of the battery's maximum capacity. The larger total of these power stations means that they can keep various household appliances running for extended periods.

Jackery Portable Power Stations are equipped with lithium batteries, which deliver reliable power to electronics. The Jackery Solar Generator maximizes the use of solar energy by linking Jackery Solar Panels with Jackery Portable Power Stations. Power is delivered smoothly and reliably thanks to cutting-edge BMS and pure sine wave inverters.

With a battery capacity of 2160Wh and an output power of 2200W, the Jackery Explorer 2000 Pro can power up to seven devices at once. If you need reliable electricity when camping or during a blackout, go no further than the Explorer 2000 Pro. The ideal option is because it has cutting-edge characteristics, including fast charging (just 2 hours with AC input), comprehensive security with a top-tier BMS, and an intuitive, high-contrast display.

If you only use your Jackery Explorer 2000 Pro portable power station twice a week, it lasts ten years. It is a very reliable power source for home backup, with a standby capacity of 100% for more than a year. 

The 19.5-pound portable generator has a folding handle for convenience when traveling. The lithium-ion battery, MPPT solar charge controller, and pure sine wave inverter in the Explorer 2000 Pro portable power station help to store solar energy for later use.

Explorer 2000 Pro Portable Power Station


explorer 2000 pro portable power station


2160Wh (43.2V/50Ah)

Life Cycle

1000 cycles to 80%+ capacity



Recharging Methods

Explorer 2000 Pro + 6*SolarSaga 100W: 5.5H

AC Adapter: 2H

12V Car Adapter: 24H

Output Ports

2*AC Output: 230V, 2200W (peak 4400W); 2*USB-A: Quick Charge 3.0x2, 18W Max; 2*USB-C: 100W Max, (5V, 9V, 15V, 12V, 20V up to 5A); 1*Carport: 12V⎓10A

Working Hours

TV(200W): 8.4H

Refrigerator(700W): 2.4H

Microwave(750W): 2.2H

Coffee Maker(800W): 2.1H

Blender(300W): 5.6H

Stove(850W): 2H

With an utterly compatible power station, the Jackery Explorer 1000 Pro Portable Power Station can power several devices at the same time! Power your electronics while camping or during a blackout with the 1000w portable power station, which has a battery capacity of 1002Wh. The BMS is the best in the business, and it also features pure sine wave technology, a folding handle, and a 94V-0 fire rating.

The Explorer 1000 Pro is a portable power station with three ports: one DC car port, two USB A connectors, and two 1000W AC outlets. It can supply energy for up to 93% of your home's electrical needs, including electric radios, refrigerators, phones, computers, and more. For instance, it can keep a 200W computer running for 4 hours, which is plenty of time for work or other applications in an emergency. A CPAP machine of 100W can run on it for 8 hours.

The collapsible design of the handle makes transport and storage a breeze. This lightweight power source has a long life of 1,000 charges, making it perfect for camping trips. A pure sine wave inverter can reliably power your devices without fluctuating voltage. The battery life in this incredibly quiet (46dB) product is monitored and maintained by a BMS.

Explorer 1000 Pro Portable Power Station


explorer 1000 pro portable power station


1002Wh (43.2V, 23.2Ah)

Life Cycle

1000 cycles to 80%+ capacity



Recharging Methods

Explorer 1000 Pro + 6*SolarSaga 80W: 9H

AC Adapter: 1.8H

12V Car Adapter: 12H

Output Ports

2*AC Output: 230V, 1000W, peak 2000W; 2*USB-A: Quick Charge 3.0x2, 18W Max; 2*USB-C: 100W Max, (5V, 9V, 15V, 12V, 20V up to 5A); 1*Carport: 12V⎓10A

Working Hours

TV(200W): 4H

Fridge(500W): 1.6H

Blender(300W): 2.7H

CPAP Machine(100W): 8H

Computer(200W): 4H

Wheelchair(380W): 2.1H

The Jackery Explorer 500 portable power station can supply electricity for multiple hours to devices ranging from low to high power consumption. With its high battery capacity of 518Wh, folding handle, industry-leading BMS technology, and ergonomic design, the power station is ideal for outdoor explorers and emergency home backup solutions. About 6.4 kilograms in weight, it is incredibly transportable.

There is one AC socket, two DC inputs, one carport, and three USB ports on the Jackery Explorer 500 portable power station. Type A charging connections may power everything from a smartphone to a ceiling fan. The power station's compact dimensions and lightweight construction make it ideal for outdoor adventures in an RV or tent camping.

You'll never have to worry about finding a power outlet to recharge your Jackery Explorer 500 Portable Power Station again. You can charge your equipment anywhere, at any time, thanks to alternative charging methods like solar panels, car connectors, and power generators. The extensive runtime of the Jackery Explorer 500 Power Station's battery is its primary selling point. 

Explorer 500 Portable Power Station


explorer 500 portable power station


518Wh (21.6V, 24Ah)

Life Cycle

800 cycles to 80%+ capacity



Recharging Methods

Explorer 500 + 1*SolarSaga 100W: 9.5H

AC Adapter: 7.5H

12V Car Adapter: 7.5H

Output Ports

1*AC Output: 240V, 500W (peak 1000W); 2*DC Output: 12V⎓7A; 3*USB-A: 5V⎓2.4A; 1*Carport: 12V⎓10A

Working Hours

Phone(10W): 44H

TV(60W): 7.3H

Fan(100W): 4.4H

Lighting(25W): 17.6H

Speaker(120W): 3.7H

Computer(200W): 2.2H

Amperes (Amps) FAQs

The following are the most frequently asked questions about the amps:
1. What are the amps or volts of a 1000W solar system?
The amps can be determined by dividing the provided watts by voltages. This example will demonstrate why large solar systems benefit from a higher DC voltage. Consider things that require one thousand watts of power to operate. 

1000w amps volts
Upon closer inspection, the interconnections among power, current, voltage, and resistance appear straightforward despite their initial complexity. Power is generated in an electrical system by increasing the current or the voltage. There is a benefit to producing the same quantity of energy with less current consumption. Resistance in electrical cables consumes power, and this consumption grows as the current in the wires increases. 

2. How do I work safely on your electrical system?
Electricity is a frequently overlooked invisible phenomenon. Working with electricity can be easy and easy if you understand its operation, handle it carefully, and observe fundamental safety precautions.

Verify the functionality of your electrical tester or multimeter before deactivating the power supply. Constantly disconnect circuits from power before tampering with them. Install a circuit breaker lockout device, label, or sign at the electrical panel to prevent anyone from turning the power back on by accident. 

It is imperative to consistently don safety glasses and dry mittens made of nonconductive materials such as leather, rubber, latex, nitrile, or analogous materials. Use apparel constructed from natural fibers rather than synthetic ones. When working with electricity, always wear sturdy footwear and never stand or recline on a wet surface. When operating outdoors, utilize a nonconductive foam mat or dry, nonconductive piece of wood.

3. How big of a power station do I need?
The optimal power station dimensions are precisely matched to supply power to all the devices that require simultaneous operation. Not only will it be more expensive to acquire if it is too large, but it will also likely operate less efficiently than the appropriately sized item. Specific equipment may not work at peak efficiency if it is too compact; as a result, its lifespan may be shortened.

Jackery portable power stations, which range in capacity from 240Wh to 2160Wh, are suitable for powering outdoor or indoor appliances. However, it would be best to determine how many watts you will require or compile a list of the devices that require electricity from the power station. Then, compute the working hours utilizing the Jackery Portable Power Station using the subsequent formula:

Working Time (Hour) = [Power Station Capacity (Wh) x 0.85] / Appliance Wattage (W)

For example, if you use Explorer 2000 Pro power station (2160Wh) to power a 750W refrigerator, it will keep working for 2.2 hours (2160Wh*0.85/750W). Consequently, you can calculate the operating hours of the appliances you intend to use using this formula.

Final Thoughts

Understanding the amps is crucial when selecting the optimal wire. Additionally, the amps, watts, volts, and ohms formulas can be utilized to determine the solar inverter's dimensions and overall power consumption. Determining the power consumption of one's appliances facilitates the computation of the sizes of a portable power station. Jackery Portable Power Stations can charge many devices in your household and are dependable power sources with higher capacities.

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