Watt-Hour To Milliamp-Hour (Wh To mAh) Conversion - Jackery Australia

Watt-Hour To Milliamp-Hour (Wh To mAh) Conversion

Watt-hours, milliamp-hours, kilowatt-hours, and volts are common power and energy measuring units for electrical appliances and battery capacity. Using some simple formulas, you can easily convert Wh to mAh or vice versa.

When you plan to purchase a solar power station or a solar generator, it's vital to calculate the watt-hour and milliamp-hours. These units will help you understand how long the power station will charge your appliances or how quickly it will deplete.

A higher mAh and Wh rating battery can power your appliances for a long time before you'll need to recharge. Jackery Explorer Portable Power Stations have high Wh and mAh values, so you can keep your home or outdoor gear charged for more time.


In this guide, we will walk through what are watt-hour and milliamp-hour and how to convert mAh to Wh.

What Is Wh to mAh?

In layman's terms, watts represent the power any device takes to function. Watt-hour is the energy consumed by an appliance over a certain time period. The capacity of solar power stations is measured in watt-hours. It represents how much energy it can supply to devices in an hour.

Jackery Explorer Portable Power Stations have large battery capacities to keep your gear charged. For instance, you can choose Jackery Explorer 1000 Pro Portable Power Station to power basic home appliances, while Jackery Explorer 2000 Pro Portable Power Station can power 99% of most home electrical appliances.

A milliampere hour (mAh) describes the electric power over time and is commonly used to measure a battery's capacity. If a battery has a high mAh, the longer will be the battery capacity or life.

To convert Wh to mAh, divide the watt-hours by volts and multiply the equation by 1000.
Formula: Milliamp-Hour = Watt-Hour ÷ Volts / 1000
Abbreviated Formula: mAh = Wh ÷ V / 1000
Converting a battery's watt-hours to milliamp-hours is particularly helpful in deciding how fast you want to charge the power station. It can also help you estimate the battery's charge time to understand how long it will take your charger to power the battery. Lastly, the milliamp-hours help you to evaluate the battery's runtime, considering you know the current drawn by the appliance.

How to Convert Wh to mAh?

If the battery capacity is in watt-hours and you want to convert it into milliamp-hours, you will have to use a simple formula. As the direct conversion of Wh to mAh is not possible, you must include battery volts during the conversion.
Here is the mathematical formula to calculate the milliamp-hours, given that you have its watt-hour.

Q (Ah) = Wh ÷ V

To convert Ah to mAh, multiply the resultant by 1000.

Q (mAh) = Q (Ah) × 1000

Let's say you are using Jackery Explorer 1000 Pro battery capacity is 1002Wh, and the voltage is 43.2V. The milliamp-hours will be:
Q (Ah) = 1002 Wh ÷ 43.2 V = 23.2 Ah
Or, Q (mAh) = 23.2 Ah × 1000 = 23200 mAh.
That said, the portable power station has a 23.2 Ah battery.
Converting watt-hours to milliamp-hours assists you in understanding the battery's charge time. The larger the mAh battery of the solar generator, the more electrical energy it can store.
The Wh to mAh conversion table:

Watt Hours (Wh)

Voltage (V)

Milliamp Hours (mAh)

1 Wh

3.7 V

270.27 mAh

5 Wh

3.7 V

1351.35 mAh

10 Wh

3.7 V

2702.7 mAh

20 Wh

3.7 V

5405.41 mAh

25 Wh

3.7 V

6756.76 mAh

40 Wh

3.7 V

10810.81 mAh

45 Wh

3.7 V

12162.16 mAh

50 Wh

3.7 V

13513.51 mAh

75 Wh

3.7 V

20270.27 mAh

100 Wh

3.7 V

27027.03 mAh

How to Convert mAh to Wh?

Generally, the device's battery capacity is in milliamp hours, and you must convert it into watt-hours. However, converting mAh to Wh is simple if you have battery volts.
Formula: Watt-Hour = Milliamp-Hour × Volts ÷ 1000
Abbreviated Formula: Wh = mAh × V ÷ 1000
Example 1:
Let us take an example of how to convert mAh to Wh.
Suppose you use a power station with a battery of 35000 mAh and 43.2V. You can substitute the values in the above formula.

Watt-Hour = 35000 mAh × 43.2V ÷ 1000 = 1512 Wh.
Example 2:
Suppose you use a smartphone with a 4500 mAh battery capacity in milliamp-hour and 3.7 V voltage. You can easily calculate the watt-hours by using the same formula.
Wh = 4500 mAh × 3.7V ÷ 1000 = 16.6 Wh
Converting mAh to Wh will help you compare the battery capacities of power stations or power banks with different voltages.
The mAh to Wh conversion table:

Milliamp Hour (mAh)

Voltage (V)

Watt Hours (Wh)

1 mAh

3.7 V

0.0037 Wh

1000 mAh

3.7 V

3.7 Wh

1200 mAh

3.7 V

4.44 Wh

2000 mAh

3.7 V

7.4 Wh

2500 mAh

3.7 V

9.25 Wh

3000 mAh

3.7 V

11.1 Wh

4000 mAh

3.7 V

14.8 Wh

4500 mAh

3.7 V

16.65 Wh

5000 mAh

3.7 V

18.5 Wh

How to Convert kWh to mAh?

Kilowatt-hour or kWh is the measure of electrical energy equal to one thousand watts of power consumed in one hour. You can easily convert kWh into mAh using the below formula.
Formula: Ah = kWh × 1000 / V
The battery's electrical charge in amps is equal to the energy in kilowatt-hours times 1000, divided by voltage.
Let us take a simple example to understand better.
Suppose you want to convert 1kWh to mAh, where the battery voltage is 12V.
Ah = 1kWh × 1000 / 12V = 83.33 Ah
To convert Ah to mAh, multiply by 1000.
mAh = 83.33 Ah × 1000 = 83,330 mAh.
The kWh to Ah and mAh conversion table:

Kilowatt Hours (kWh)

Amp Hours (Ah)

Milliamp Hours (mAh)

0.01 kWh

0.83 Ah

830 mAh

0.02 kWh

1.67 Ah

1,670 mAh

0.025 kWh

2.5 Ah

2,500 mAh

0.05 kWh

4.17 Ah

4,170 mAh

0.1 kWh

8.33 Ah

8,330 mAh

0.5 kWh

41.67 Ah

41,670 mAh

1 kWh

83.33 Ah

83,330 mAh

2 kWh

166.67 Ah

166,670 mAh

10 kWh

833.33 Ah

833,330 mAh

Jackery Power Stations With Higher Capacities

Jackery is a well-known brand that offers high-quality and top-of-the-line portable solar power stations and solar panels. Jackery Explorer Portable Power Stations have high capacity and can help charge all low-power-consuming and high-power-consuming appliances. Below we have included the most popular Jackery solar power stations.
This Jackery model delivers enormous power to charge all small and large appliances during a power outage, off-grid activities, or RV trips. Equipped with a battery capacity of 2160Wh, the Jackery Explorer 2000 Pro can charge AC, full-sized refrigerators, and much more.
Jackery Explorer 2000 pro with mppt charge controller
The power station can be entirely charged with 6* SolarSaga 100W solar panels in less than five and a half hours and an AC wall outlet in only two hours. This exceptional charging experience allows you to recharge while off the grid quickly.


Recharging Time




AC Adapter: 2H

12V Car Adapter: 24H

6x SolarSaga 100W Solar Panel: 5.5H

2*AC Output: 230V, 2200W, peak 4400W;

2*USB-A: Quick Charge 3.0x2, 18W Max; 

2*USB-C: 100W Max, (5V, 12V, 9V, 15V, 20V up to 5A); 

1*Carport: 12V⎓10A

Microwave(700W): 2.4H

Kettle(800W): 2.1H

Drill(900W): 1.9H

Blender(300W): 5.6H

Toaster(650W): 2.6H

Fridge(300W): 5.6H

Jackery Explorer 1000 Pro Portable Power Station is an utterly compatible power station that simultaneously charges multiple devices! With a 1002Wh battery capacity, the 1000W portable power station keeps your electronic devices charged during camping and power disruptions.
Jackery Explorer 1000 pro with mppt charge controller
With an AC input of up to 800W, the Explorer 1000 Pro's complete wall charge takes 1.8 hours. Ideal for camping and power disruptions; compatible with all Jackery solar panels. The two 100W PD ports provide devices with constant, rapid power. Supports seven devices concurrently with a capacity of 1002Wh and multiple charging methods via 2*1000W AC ports, 2* USB-A ports, 2* USB-C ports, and a DC vehicle port.


Recharging Time




AC Adapter: 1.8H

12V Car Adapter: 12H

4x SolarSaga 100W Solar Panel: 3.8H

2 x SolarSaga 80W Solar Panel: 9 H

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

Microwave(700W): 1.1H

Kettle(800W): 1H

Drill(900W): 0.9H

Blender(300W): 2.7H

Toaster(650W): 1.2H

Fridge(300W): 2.7H

Wh to mAh FAQs

1. How many watts per hour is 20000mAh?

To convert 20000 mAh to Wh, you must know the battery voltage. Let us suppose that the lithium battery is 12V.

Wh = mAh × V ÷ 1000 = 20000mAh × 12 ÷ 1000 = 240Wh.

2. How many watt-hours is a 10000mAh battery?

Similarly to the previous question, let us suppose the battery voltage is 12V.

The watt-hour will be:

Wh = mAh × V ÷ 1000 = 10,000 × 12 ÷ 1000 = 120Wh.

3. Why Wh is important for power stations?

The best part about the battery is how much power it can store and how long it can run the appliances. The power capacity of most batteries is measured in watt-hours. Understanding the watt-hour will help you choose the best power station or solar generator to keep your gear charged for long hours.

Jackery offers high-quality and large-capacity solar power stations suitable for camping trips, RV trips, power outages, etc. If you want to keep 99% of electrical appliances charged, consider investing in Jackery Explorer 2000 Pro Portable Power Station. It has a battery capacity of 2160Wh, capable of powering all small and large devices for hours.
Jackery Explorer 2000 Pro Portable Power Station

Final Thoughts

Watt-hour and milliamp-hour are the two electrical units that determine the capacity of a solar power station battery. Understanding how to convert Wh to mAh or vice versa will help you choose the ideal size solar power station.

Remember, before you choose any solar power station or a solar generator, consider calculating the watts of each appliance you wish to power. This will help you determine which Jackery Solar Generator will fit your power needs.

For instance, if you want to power basic home appliances, Jackery Explorer 1000 Pro Portable Power Station could be the ideal choice. However, if you have higher power requirements, you can consider the ultimate power solution – Jackery Explorer 2000 Pro with a battery capacity of 2160Wh.

Best-selling Jackery Portable Power Stations

Sale Off
Jackery Explorer 1000 Pro Portable Power Station
Sale Off
Jackery Explorer 500 Portable Power Station


New Arrival

Hurry up! Sale ends once the timer hits zero


Get My Gift