Ultimate Guide to Amps, Watts, and Volts With Jackery

Electricity has become a crucial part of our day-to-day life, and imagining living without power seems impossible. As solar energy is a safe, renewable, and clean alternative for homes, many people are investing in solar power stations. However, it's worth noting the power station's amps, watts, voltage, etc., to ensure it can power appliances for long hours.

watts amps volts by jackery

Jackery Explorer Portable Power Stations are large-capacity solar solutions with high watts, volts, and amps values. In this guide, we will take a deep dive into electrical terms. We will focus on calculating watts, amps, volts, etc., and on choosing the ideal-sized power station.

Jackery Explorer 3000 Pro Portable Power Station, Jackery Explorer 2000 Pro Portable Power Station, and Jackery Explorer 1500 Pro Portable Power Station have high Wh and Ah ratings, making them great choices for home and outdoor solutions. You can charge most of your home appliances with these powerful and portable charging solutions and even carry them on outdoor adventures.




Rated / Peak Power

AC Output


Explorer 3000 Pro


jackery explorer 3000 pro power station


3000W (6000W Peak)

(x1): 120V~ 60Hz 25A Max


(x3): 120V~ 60Hz 20A Max

Length: 18.6 in (47.24 cm)

Width: 14.1 in (35.81 cm)

Height: 14.7 in (37.36 cm)

Explorer 2000 Pro

 jackery explorer 2000 pro power station


2200W (4400W Peak)

(x3): 120V, 60Hz, 2,200W (4,400W Peak)

Length: 15.1 in (38.4 cm)

Width: 10.5 in (26.9 cm)

Height: 12.1 in (30.75 cm)

Explorer 1500 Pro


jackery explorer 1500 pro power station


1800W (3600W Peak)

(x3): 120V, 60Hz, 1,800W (3,600W Peak)

Length: 15.12 in (38.4 cm)

Width: 10.59 in (26.9 cm)

Height: 12.11 in (30.75 cm)

What Are Amps, Watts, and Volts?

When understanding the nitty-gritty of electricity, it's crucial to learn basic electronic terms like watts, amps, volts, and ohms.

Identifying the watt, ampere, voltage, and ohms for any power station is vital to confirming compatibility with your home or outdoor appliances. On the contrary, powering equipment using a wrong voltage battery is the primary reason for appliance operation failure.

The best part about these basic electrical terms is that they are interrelated and can be calculated using a simple formula. For example, you can calculate the watts an appliance consumes by multiplying amps and volts. Let us discuss how amps, watts, voltage, and ohms differ.

What Is An Amp?

Amp, short for amperage, is one way to measure the amount of electricity that runs through any circuit. It is the rate at which the current flows through the circuit or the number of electrons that move through the wire. The unit is named after André-Marie Ampère, who was the French physicist and father of electromagnetism.

The receptacle outlet circuits and general-purpose lighting are rated at 15 amps. However, in the newer construction, you'll find some 20 amp circuits for the laundry room, bathroom, kitchen, and even appliances like refrigerator or dishwasher. Large devices like electric clothes dryers are typically rated at 30 amps.

Formula: Amps = Watts / Volts

If you have the watts and volts of an appliance, you can easily calculate its amps. For example, if the watts and volts of an electric device are 3600W and 240V, respectively, the amps value will be:

Amps = 3600W / 240V = 15A.

Amperage is the strength of the electric current and is expressed in amperes. The larger the amperage, the more electricity can flow through the circuit.

What Is A Watt?

Watts measure power and are widely used as units of electricity. In other words, wattage is the amount of power any electric device consumes. Another way to understand wattage is that it is the electricity at work or the power it takes to actually do something.

If you have an electrical appliance that consumes one watt, it will typically use one amp flowing at 120 volts. Home appliances like microwaves or televisions generally require more power or watts than small appliances like lights.

Formula: Watts = Amps × Volts

For instance, if an electric device uses 10 amps and 240 volts, the wattage will be:

Watts = 10 amps × 240 volts = 2400W.

The higher the wattage, the more the output and power of the appliance.

What Is A Volt?

In simple terms, the volts (short for voltage) is the pressure pushing the electric current through the wire. Sometimes, it is also described as the speed at which the individual electrons move through the circuit. In the United States, the power coming from the electricity grid is generally delivered at two different voltages: 120 volts and 240 volts.

Generally, small home appliances like TVs, light bulbs, cell phone chargers, and computers need only 120 volts. On the other hand, large and power-hungry appliances like electric ranges, clothes dryers, space heating systems, and air conditioning units operate at 240 volts.

Formula: Volts = Watts / Amps

If the appliance consumes 500 watts and 25 amps, the volts can be calculated as:

Volts = 500W / 25A = 20V

What Is An Ohm?

The home electrical wiring is typically made of copper and aluminum, and both of them have a certain amount of natural resistance or friction. This slows down the electricity flow. Whenever the electricity passes through the appliances and devices, they also apply some kind of resistance.

The resistance or friction is measured in ohms, named after Georg Simon Ohm. If the resistance is higher, more amperage or voltage will be needed to overcome the friction within the electrical circuit.

Formula: Ohm = Volts / Amps

Or, Ω = V / A

For example, if there are 240V and 12A, the natural resistance of the conductor will be:

Ω = 240V / 12A = 20 Ω

What Is Hertz?

Hertz is the rate of change in the directional electricity flow or how quickly it changes. The frequency of change in direction with electricity is measured per second and is represented in Hertz (or Hz). For example, 50 Hz means the rate of change in the directional electricity flow is 50 times per second.

Formula: Hertz (f) = 1 / time (t)

If you live in the US, 60Hz is the standard Hertz value. In Europe, the standard Hertz is 50Hz or 50 cycles per second.

If you have decided to invest in a solar power system, you'll need to remember to never deplete it. Understanding common terms like watts, volts, amps, and resistance about the solar system and the appliances will help you decide which electrical device can be plugged into it.

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

Electrical mathematics may seem overwhelming at first. But it's pretty simple once you dig deep. One of the simplest ways to understand the relation between amps, watts, and voltage is Ohm's Wheel Law.

amps watts and volts relations

Let's take an example to help you understand how to use the wheel. Say you want to install an AC at your home and finalize a 4000-watt AC for your space. Now you want to determine the circuit required for AC to work efficiently.

In this case, we suppose the AC is rated at 4000 watts and must be supplied with 240 volts. As we already have watts and volts, we need to calculate amps or intensity of current (represented by I).

Now, choose the formula from Ohm's Wheel Law image.

I = W / E

Or, Amps = Watts ÷ Volts

Substitute the values:

Amps = 4000W ÷ 240V = 16.6 A.

As the AC will operate for 3 or 4 hours on a hot summer day, we apply a safety factor of 125%.

Amps = 16.6 × 1.25 = 20.8 amps.

That's it. A standard 25-amp circuit would supply stable and continuous electricity to the AC.

What Are The Power, Voltage, Current, and Resistance?

There are four basic units of electricity: power, current, voltage, and resistance. Each of them is measured in different ways: voltage in volts, power in watts, current in amperes, and resistance in ohms.

Power: It is measured in watts and typically represents the useful work done by electricity. Watts generally means the useful work that is done by electricity. One important thing to note is that watts only reflect the work done at any particular moment and not the energy consumed over time.

Voltage: The pressure of electricity is measured in volts. The data centers typically draw power from the electricity grid at a higher voltage, usually 480 volts, that is transformed to a lower voltage for use by the IT equipment.

Current: It is measured in amps or amperes and represents the flow rate of electricity or how many electrons flow through any conductor. The unit describes volume but not pressure.

Resistance: It represents how easily electrons can move through a material. If the resistance is higher, more voltage or ampere will be required to overcome resistance with a current.

Power, Voltage, Current, and Resistance Formulas

In this section, we will reveal the main formulas of power, resistance, current, and voltage.


If you want to calculate the power of any electrical circuit or appliance, you need at least volts and amps. Watts is equal to the product of both voltage and current. For example, if the appliance or electric circuit is rated at 12V of voltage and 10 amps, the wattage can be calculated as follows:

Watts = Volts × Amps = 12V × 10A = 120W


Similarly to power, you can also calculate the volts of the circuit or appliance using a simple formula. Volts are equal to the watts divided by the amps. For example, if the watts of an appliance is 50W and the flow of the current is 5A, the voltage will be:

Volts = Watts ÷ Amps = 50W ÷ 5A = 10V


Current is the measure of flow through the electrical circuit. It's measured in amps and equals to 0.001 kilowatts per hour. For example, if the refrigerator has a rated power of 60 watts with a voltage of 12 volts, the current can be calculated using the following formula.

Amps = Watts / Volts = 60W / 12V = 5A


Resistance determines how easily electrons can move through a material. Suppose your refrigerator has stopped working on 12V, and you want to check if the 12V heating element is suitable by measuring the resistance. In this example, the voltage is 12V, and the wattage of the refrigerator is 120W; you can calculate the resistance with the below formula.

Resistance =  / Watts = (12 × 12) / 120 = 1.2 ohm

different electrical formula

Each triangle in the above diagram represents the three most used formulas that you'll need.

Amps, Watts, and Volts Formulas

Now that you know the basics of wattage, amps, volts, and ohms, here are a few easy formulas to remember.

Amps Formulas:

The current (in amps) equals the voltage (in volts) divided by the resistance (in ohms).

I = V ÷ R

The current (in amps) equals the power (in watts) divided by the voltage (in volts).

I = W ÷ V

The current (in amps) equals the square root of power (in watts) divided by the resistance (in ohms).

I² = W ÷ R

Or, I =Jackery

Watts Formulas:

The power (in watts) equals the voltage (in volts) times the current (in amps).

W = V × I

The power (in watts) equals the square of voltage (in volts) divided by resistance (in ohms)

W = V² ÷ R

The power (in watts) equals the square of current (in amps) times the resistance (in ohms).

W = I² × R

Volts Formulas:

The voltage (in volts) equals the current (in amps) times the resistance (in ohms).

V = I × R

The voltage (in volts) equals the power (in watts) divided by the current (in amps).

V = W ÷ I

The voltage (in volts) equals the square root of power (in watts) times the resistance (in ohms).

V =Jackery

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

Amps, watts, and volts measure electricity and represent how efficient and powerful an electrical system is. Volts measure the force, and watts represent the amount of energy used. Amps determine the flow of electrical currents. Here, we will reveal the main differences between amps, watts, and volts.


Volts are the simple base unit of voltage and determine the potential difference between any two points. It also refers to the electrical pressure that is applied inside the circuit. When the volts are increased, the current will increase as well.

The current will quickly flow through the electrical system in a loop only if the circuit is not broken. One voltage is the electric potential difference between two points within a wire or circuit. The following table reveals different appliances and their voltage levels.

Object or Device

Voltage (V)

Rechargeable Battery


Non-Rechargeable Battery




Automobile Battery


Electric Vehicle Battery


Household Battery


Rapid Transit Third Rail


Electric Power Lines (High Voltage)





Watts are commonly described as the base unit of electrical power within any electrical system. It determines the amount of energy that's released within a system per second. If the watts are higher, more electrical power and energy are being produced.

Understanding the wattage will help you choose electrical devices that use less energy. In addition, it also assists you in determining how many watts of solar system can power your home. Here is the table that reveals appliances and their average watts usage.

Device or System

Cost per hour

Energy Consumer

Heat Pump or Central Aircon



Hot Water System or Clothes Drier

0.55 Cents


Water Pump

0.40 Cents



0.20 Cents


Hair Dryer

0.16 Cents


Electric Stove

0.14 Cents



0.14 Cents


Computer with Monitor

0.05 Cents


Light Bulb

0.008 Cents



If you are wondering about what is current measured in, then amps is the answer. Amps are the base unit for electrical currents and measure the volume of how many electrons are present. It also determines how much electrical energy or electricity is provided within one line.

Common Misconceptions About Amps, Watts, and Volts

There are many common misconceptions about amps, watts, and volts. Here, we will discuss them briefly.

Higher Voltage Means Higher Power

While it is true that higher voltage means more power, you must remember that power is the product of both current and voltage. For example, a higher voltage with a lower current can produce the same power output as a lower voltage with a higher current. The voltage is higher only if both the voltage and current are high.

Voltage and Current Ratings are Interchangeable

Many people often think that each electrical device operates at a specific current and voltage range. When you use an appliance outside of the intended current or voltage range, it can lead to damage, reduced performance, and even situations like electrical shocks or fires.

More Amps are Better

The amount of current (measured in amps) needed depends on the specific appliances you are charging. Sometimes, a higher current might be necessary to power any device or complete a task, and understanding amps vs watts is necessary. However, it might be dangerous in other cases. A higher current can lead to overheating or even damage the electrical components.

Jackery Examples to Better Understand Amps, Watts, and Volts

It is important to note that the watts, amps, and volts can not only help you calculate the amount of power but also the size of a solar system. A battery backup that has a higher watt-hour rating can charge more appliances for long hours.

Jackery is a trusted solar brand that manufactures solar generators, power stations, and solar panels. When you place the Jackery SolarSaga Solar Panels under direct sunlight, the monocrystalline solar cells absorb and convert the solar energy into DC electricity. The electricity is then passed to the pure sine wave inverter of the Jackery Explorer Portable Power Station to convert DC to AC current and charge appliances.

Jackery Explorer 3000 Pro Portable Power Station

The Jackery Explorer 3000 Pro Portable Power Station has a large NMC battery with a 3024Wh capacity operated at 43.2V. It can supply steady electricity to 99% of your small or large appliances. The power station has multiple USB-A, USB-C, and AC output ports, so you can charge multiple devices simultaneously. It also supports solar charging methods and can be recharged in only 3.5 hours with 6*Jackery SolarSaga 200W Solar Panels.

jackery explorer 3000 pro portable power station


Jackery Explorer 3000 Pro



Battery Cell



Length: 18.6 in (47.24 cm)


Width: 14.1 in (35.81 cm)


Height: 14.7 in (37.36 cm)

Noise Level

Less than 30dB

Recharging Methods

Solar Recharging: 3.5 H (6*Jackery SolarSaga 200W Solar Panels)

Wall Recharging: 2.4 H

Car Recharging: 35 H

Output Ports

AC Output (x1): 120V~ 60Hz 25A Max

AC Output (x3): 120V~ 60Hz 20A Maximum

USB-C Output (x2): 100W Maximum, 5V⎓3A, 9V⎓3A, 12V⎓3A, 15V⎓3A, 20V⎓5A

Working Hours

Refrigerator (15W - 520W) = 4 - 171H

Heater (1800W) = 1.4H

Microwave (960W) = 2.6H

TV (60W) = 42H

Light (5W) = 514H

Electric Grills (850W) = 3H

Coffee Machine (200 - 1800W) = 1-3H

Jackery Explorer 2000 Pro Portable Power Station

The Jackery Explorer 2000 Pro Portable Power Station has a 2160Wh NMC battery to charge 96% of home or outdoor electrical devices. It has high Wh and Ah ratings to charge appliances for longer hours. The power station weighs only 53 lbs, making it comfortable for indoor and even outdoor use. With the help of 6*Jackery SolarSaga 200W Solar Panels, you can recharge the battery backup in only 2.5 hours.

jackery explorer 2000 pro portable power station


Jackery Explorer 2000 Pro



Battery Cell



Length: 15.1 in (38.4 cm)

Width: 10.5 in (26.9 cm)

Height: 12.1 in (30.75 cm)

Noise Level


Recharging Methods

Solar Recharging: 5.5 H (6*Jackery SolarSaga 100W Solar Panels)

Wall Recharging: 2 H

Car Recharging: 24 H

Output Ports

AC Output (x3): 120V, 60Hz, 2,200W (4,400W Surge Peak)

USB-A Output (x2): Quick Charge 3.0, 18W Maximum

USB-C Output (x2): 100W Maximum, (5V, 9V, 12V, 15V, 20V up to 5A)

Working Hours

Blender (300W) = 6H

Air Conditioner (1150W) = 1.5H

Blender (300W) = 6H

Coffee Maker (1150W) = 1.5H

Microwave (1160W) = 1.5H

Electric Grill (1600W) = 1.1H

Mini Cooler (90W) = 20H

Refrigerator (520W) = 3.5H

Projector (100W) = 18H

Jackery Explorer 1500 Pro Portable Power Station

The Jackery Explorer 1500 Pro Portable Power Station has an NMC battery capacity of 1512Wh to power most of your essential appliances. It weighs only 37.4 lbs, making it 20% lighter than other similar products with the same capacity. It has one car charger, two USB-C charging ports, and three AC output ports to charge 8 electrical devices simultaneously.

jackery explorer 1500 pro portable power station


Jackery Explorer 1500 Pro



Battery Cell



Length: 15.12 in (38.4 cm)

Width: 10.59 in (26.9 cm)

Height: 12.11 in (30.75 cm)

Noise Level


Recharging Methods

Solar Recharging: 4 H (6*Jackery SolarSaga 100W Solar Panels)

Wall Recharging: 2 H

Car Recharging: 16.5 H

Output Ports

AC Output (x3): 120V, 60Hz, 1,800W (3,600W Surge)

USB-A Output (x2): Quick Charge 3.0x2, 18W Maximum

USB-C Output (x2): 100W Maximum, (5V, 9V, 12V, 15V, 20V up to 5A)

Working Hours

Ice Shaver (700W) = 1.8H

Hand Drill (400 - 800W) = 1-3H

Lamp (5W) = 257W

Mini Fridge (90W) = 14H

Bluetooth Speaker (10W) = 128H

Microwave Oven (1000W) = 1.2H

Blower (400 - 700W) = 1-3H

Coffee Maker (1120W) = 1.1H

TV (60W) = 21H

Understanding Amps, Watts, and Volts in Electrical System

Besides watt, ampere, voltage, and ohms, there are a few additional electrical terms. Let us explain them briefly.

Atoms: They are known as the building blocks of matter that consist of a nucleus with protons and neutrons. It is surrounded by negatively charged electrons, resembling a mini solar system. Similar to atoms, the electrical system is made of matter.

Electrons: Unlike planets that move slowly, electrons move around the nucleus at the speed of light. The moving path of electrons is called a probability cloud.

Electricity: Atoms grouped together are called molecules. Both atoms and molecules located closely can easily pass electrons from one atom to another. This is the same case when electrons flow through a conductor.

Connecting your electrical equipment with the wrong voltage or power supply can cause appliance failure. That's why calculating the electrical ratings is essential before investing in a solar system or an electrical battery.

The Electrical Efficiency

In an electrical system, power (measured in watts) equals the voltage multiplied by the current. Electrical efficiency means powering the same device using less energy. When you have an efficient electrical system, it means there is less waste of energy.

Suppose you are using a 12-volt battery and a 12V light bulb. You need 240 watts of power to light the bulb. Let us apply Ohm's Law to calculate the amps.

I = W ÷ V = 240W ÷ 12V = 20 amps.

Now let us say you have a 24-volt battery and a 24-volt light bulb to get the same amount of power, i.e., 240 watts.

I = W ÷ V = 240W ÷ 24V = 10 amps.

Resistance, in this case, will be 2.4 ohms.

Upon evaluating currents in the two scenarios, the latter system produces the same power using half the current. This means the second electrical system is more efficient.

When you connect the appliance to the wrong voltage, there are higher chances of equipment failure. If you hook up the new appliance to the faulty power supply, it will not work and may even get damaged. Understanding watts, amps, volts, and ohms will help you choose the right solar system and charge appliances efficiently.

Amps, Watts, and Volts FAQs

How many amps are in 10 watts at 120 volts?

You can calculate the amps by dividing the given watts by volts.

Amps = Watts ÷ Volts = 10W ÷ 120V = 0.083A

Here we have a few more ampere calculations with different power and volts.

Power (W)

Voltage (V)

Current (A)

10 Watts

120 Volts

0.0833 amps

20 Watts

120 Volts

0.167 amps

30 Watts

120 Volts

0.250 amps

40 Watts

120 Volts

0.333 amps

50 Watts

120 Volts

0.417 amps

60 Watts

120 Volts

0.500 amps

70 Watts

120 Volts

0.583 amps

Does higher watts mean more power?

In short, yes. As watts represent the rate at which energy is used or transferred, it is directly related to power. The higher the watts of a battery capacity, the more power.

How much voltage is safe for us?

A voltage of 50V AC or 120V DC is generally safe as long as the shock duration does not exceed three seconds. However, the individual sensitivity to electric shock may vary and might be influenced by several factors, like skin resistance, personal health, and environmental conditions.

How to work safely on my home electrical system?

When working with electricity, you'll need to keep a few essential things in mind. Here are some of them.

  • Before you turn off the power, ensure the multimeter or electrical tester works appropriately.
  • Wear safety glasses and nonconductive latex, rubber, leather, nitrile, or similar dry gloves.
  • When working on the electrical circuits, always turn off the power supplied to them.
  • You must wear proper, sturdy footwear and use a dry, nonconductive mat when working outdoors.

Final Thoughts

Knowing the current flowing the load is vital in choosing the best wire. The amps, watts, voltage, and ohms formulas are also helpful in calculating the size of the solar inverter and total power consumption. Once you know how much power your appliances consume, you can easily calculate the portable power station size.

Depending on your power needs, you can choose Jackery Explorer Portable Power Stations, available in different sizes. If you want to power all small and large home or outdoor appliances for hours, consider investing in the ultimate power solution Jackery Explorer 3000 Pro Portable Power Station.

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