If you want to convert Wh to mAh (watt-hour to milliamp-hour), you can use the below formula:
Milliamp-hours = 1000 × Watt-Hours ÷ Volts
Or, mAh = 1000 × Wh ÷ V
In order to convert mAh to Wh or vice versa, you'll need to know the voltage. For example, if the voltage is 3.7V and you want to convert 100Wh to mAh, substitute the values in the above formula:
mAh = 1000 × 100Wh ÷ 3.7V = 27027.02mAh
Watt-hour and milliamp-hours are two important electrical units that help evaluate and manage the power requirements of electrical appliances. The conversion between watt-hours and milliamp-hours might seem technical at first glance, but it is straightforward if you follow the right approach. If you want to understand how to convert Wh to mAh or mAh to Wh at different voltages, this guide will reveal everything you need to know to simplify the conversion.
Key Takeaways
Watt-hours is the unit of electrical energy representing the total amount of power drawn by an electrical appliance over a specific duration.
Milliamp-hours is the electrical charge capacity that represents how long any battery can provide current before depleting.
The simple Wh to mAh formula is mAh = 1000 × Wh ÷ V.
In order to convert mAh to Wh, the formula is Wh = mAh × V ÷ 1000.
What Is Wh to mAh?
Watt-hours (represented in Wh) is the unit of electrical energy describing the total amount of power consumed in a specific duration. It also measures how much energy or power an appliance uses when it runs for one hour. For example, a home appliance rated at 20Wh would typically consume 20 watts of power over the span of one hour. Similarly, a device rated at 50Wh consumes 50 watts of energy over one hour.
Milliamp-hour (represented in mAh) is the unit indicating the electrical charge capacity of the battery. It will help you decide for how long a battery can provide current before depleting completely. For instance, a battery or power station rated at 2000 mAh generally delivers a current of 2000 milliamperes for one hour. While mAh measures the capacity of small batteries, the larger batteries have Ah ratings.
Formula: Milliamp-Hour = Watt-Hour ÷ Volts / 1000
Abbreviated Formula: mAh = Wh ÷ V / 1000
The Wh to mAh or mAh to Wh conversion is necessary, especially for purchasing or replacing batteries. It also helps you understand the energy needs and ensure you select a battery that can power appliances and deliver the desired longevity. Jackery Explorer Portable Power Stations have high Wh and Ah ratings that can charge appliances for extended periods.
For example, the Jackery Explorer 3000 Pro Portable Power Station has a capacity of 3024Wh and an Ah rating of 70Ah. Thus, the home battery backup can power 99% of appliances.
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 watts 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
Example:
Let's say you have a battery with a capacity of around 160Wh and a voltage of 43.2V. The milliamp-hours will be:
Q (Ah) = 160Wh ÷ 43.2V = 3.7037Ah
Or, Q (mAh) = 3.7037Ah × 1000 = 3703.7mAh.
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. You can use the Wh to mAh calculator to quickly convert the watt-hours to milliamp-hours.
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 |
|
256 Wh |
3.7 V |
69189.19 mAh |
Converting Wh to mAh is particularly helpful in estimating which charger can charge the battery pack quickly, ensuring it does not cause any damage. The Wh to mAh conversion formula will help you understand how many milliamps the battery charger should output for appropriate charging.
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
If you want to convert mAh to V (mAh to volts), you can use the formula: V = 1000 × Wh ÷ mAh.
Example 1:
Let us take an example of how to convert mAh to Wh.
Suppose you use a power station with a battery of 20000mAh and 43.2V. You can substitute the values in the above formula to convert 20000mAh to Wh.
Watt-Hour = 20000mAh × 43.2V ÷ 1000 = 864Wh.
Example 2:
Suppose you use a smartphone with a 5000mAh battery capacity in milliamp-hours and 3.7V voltage. You can easily calculate 5000mAh to Wh by using the same formula.
Wh = 5000mAh × 3.7V ÷ 1000 = 18.5Wh
Example 3:
When the milliamp-hours are increased from 5000mAh to 10000mAh, and the voltage remains 3.7V, the value of watt-hours also increases.
Here's how to convert 10000mAh to Wh:
Wh = 10000mAh × 3.7V ÷ 1000 = 37Wh
Converting mAh to Wh will help you compare the battery capacities of power stations or power banks with different voltages.
The mAh to watt 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 |
|
24000 mAh |
3.7 V |
88.8 Wh |
|
30000 mAh |
3.7 V |
111 Wh |
With the mAh to Wh formula, you can compare the battery capacities of power banks or power stations operating at different voltages. The total power or energy any battery can deliver in Wh will depend on its mAh and V values.
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 mAh and kWh to Ah 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 |
One kilowatt-hour is equivalent to one kilowatt of power consumed or transferred in one hour.
Here are some kWh to mAh charts where the conversion chart takes place at 3.7V and 5V, which are the most common DC volts for small handheld electronics.
Kilowatt-Hours to Milliamp-Hour at 3.7V
|
Kilowatt Hours (kWh) |
Voltage (V) |
Milliamp Hours (mAh) |
|
1 kWh |
3.7 V |
270,270.27 mAh |
|
2 kWh |
3.7 V |
540,540.541 mAh |
|
3 kWh |
3.7 V |
810,810.811 mAh |
|
4 kWh |
3.7 V |
1,081,081.081 mAh |
|
5 kWh |
3.7 V |
1,351,351.351 mAh |
|
6 kWh |
3.7 V |
1,621,621.622 mAh |
|
7 kWh |
3.7 V |
1,891,891.892 mAh |
|
8 kWh |
3.7 V |
2,162,162.162 mAh |
|
9 kWh |
3.7 V |
2,432,432.432 mAh |
|
10 kWh |
3.7 V |
2,702,702.703 mAh |
|
20 kWh |
3.7 V |
5,405,405.405 mAh |
|
30 kWh |
3.7 V |
8,108,108.108 mAh |
|
40 kWh |
3.7 V |
10,810,810.811 mAh |
|
50 kWh |
3.7 V |
135,13,513.514 mAh |
|
60 kWh |
3.7 V |
16,216,216.216 mAh |
|
70 kWh |
3.7 V |
18,918,918.919 mAh |
|
80 kWh |
3.7 V |
21,621,621.622 mAh |
|
90 kWh |
3.7 V |
24,324,324.324 mAh |
|
100 kWh |
3.7 V |
27,027,027.027 mAh |
Kilowatt-Hours to Milliamp-Hour at 5V
|
Kilowatt Hours (kWh) |
Voltage (V) |
Milliamp Hours (mAh) |
|
1 kWh |
5 V |
200,000 mAh |
|
2 kWh |
5 V |
400,000 mAh |
|
3 kWh |
5 V |
600,000 mAh |
|
4 kWh |
5 V |
800,000 mAh |
|
5 kWh |
5 V |
1,000,000 mAh |
|
6 kWh |
5 V |
1,200,000 mAh |
|
7 kWh |
5 V |
1,400,000 mAh |
|
8 kWh |
5 V |
1,600,000 mAh |
|
9 kWh |
5 V |
1,800,000 mAh |
|
10 kWh |
5 V |
2,000,000 mAh |
|
20 kWh |
5 V |
4,000,000 mAh |
|
30 kWh |
5 V |
6,000,000 mAh |
|
40 kWh |
5 V |
8,000,000 mAh |
|
50 kWh |
5 V |
10,000,000 mAh |
|
60 kWh |
5 V |
12,000,000 mAh |
|
70 kWh |
5 V |
14,000,000 mAh |
|
80 kWh |
5 V |
16,000,000 mAh |
|
90 kWh |
5 V |
18,000,000 mAh |
|
100 kWh |
5 V |
20,000,000 mAh |
How to Convert mAh to kWh?
If you want to convert mAh to kWh, all you need to do is multiply milliamp-hour by volts and then divide the result by 1,000,000.
Formula: Kilowatt-hours = Milliamp-hours × Volts ÷ 1,000,000
Abbreviated Formula: kWh = mAh × V ÷ 1,000,000
Example: If you have a battery pack rated at 10,000 mAh and 3.7V, the capacity in kWh can be calculated as follows:
kWh = 10,000 mAh × 3.7V ÷ 1,000,000 = 0.037 kWh
Here are the mAh to kWh charts revealing the conversions at 3.7V and 5V.
|
Milliamp-Hour (mAh) |
Kilowatt-Hours (kWh) at 3.7V |
Kilowatt-Hours (kWh) at 5V |
|
1000 mAh |
0.004 kWh |
0.005 kWh |
|
2000 mAh |
0.007 kWh |
0.01 kWh |
|
3000 mAh |
0.011 kWh |
0.015 kWh |
|
4000 mAh |
0.015 kWh |
0.02 kWh |
|
5000 mAh |
0.019 kWh |
0.025 kWh |
|
6000 mAh |
0.022 kWh |
0.03 kWh |
|
7000 mAh |
0.026 kWh |
0.035 kWh |
|
8000 mAh |
0.03 kWh |
0.04 kWh |
|
9000 mAh |
0.033 kWh |
0.045 kWh |
|
10000 mAh |
0.037 kWh |
0.05 kWh |
How to Convert Wh to Ah?
Ampere hours (abbreviated as Ah or amp-hours) is the amount of energy charged in any battery that delivers one amp of current flow for one hour. Ah on a battery is a way to measure how much current or electricity can be drawn from any battery in an hour before it depletes completely.
In order to convert Wh to Ah, you need to divide the watt-hours by the volts of the battery.
Formula: Amp hours = Watt hours ÷ Volts
Abbreviated Formula: Ah = Wh ÷ V
Example: If you have a 1000Wh LiFePO4 battery operating at 12V, the amp-hours can be calculated as follows:
Amp-hours = 1000Wh ÷ 12V = 83.3Ah
Here are the Wh to Ah conversion tables at 12V and 24V.
|
Watt hours (Wh) |
Value of Amp hours (Ah) at 12 Voltage (V) |
Value of Amp hours (Ah) at 24 Voltage (V) |
|
100 Wh |
8.33 Ah |
4.17 Ah |
|
200 Wh |
16.67 Ah |
8.33 Ah |
|
300 Wh |
25 Ah |
12.5 Ah |
|
400 Wh |
33.33 Ah |
16.67 Ah |
|
500 Wh |
41.67 Ah |
20.83 Ah |
|
600 Wh |
50 Ah |
25 Ah |
|
700 Wh |
58.33 Ah |
29.17 Ah |
|
720 Wh |
60 Ah |
30 Ah |
|
800 Wh |
66.67 Ah |
33.33 Ah |
|
900 Wh |
75 Ah |
37.5 Ah |
|
960 Wh |
80 Ah |
40 Ah |
|
1000 Wh |
83.33 Ah |
41.67 Ah |
|
1100 Wh |
91.67 Ah |
45.83 Ah |
|
1200 Wh |
100 Ah |
50 Ah |
|
1260 Wh |
105 Ah |
52.5 Ah |
|
1300 Wh |
108.33 Ah |
54.17 Ah |
|
1400 Wh |
116.67 Ah |
58.33 Ah |
|
1500 Wh |
125 Ah |
62.5 Ah |
|
2000 Wh |
166.67 Ah |
83.33 Ah |
|
2400 Wh |
200 Ah |
100 Ah |
|
3000 Wh |
250 Ah |
125 Ah |
|
3600 Wh |
300 Ah |
150 Ah |
|
4000 Wh |
333.33 Ah |
166.67 Ah |
|
5000 Wh |
416.67 Ah |
208.33 Ah |
|
6000 Wh |
500 Ah |
250 Ah |
|
7000 Wh |
583.33 Ah |
291.67 Ah |
|
8000 Wh |
666.67 Ah |
333.33 Ah |
|
8700 Wh |
725 Ah |
362.5 Ah |
|
9000 Wh |
750 Ah |
375 Ah |
|
9600 Wh |
800 Ah |
400 Ah |
Jackery Examples to Better Understand Wh to mAh
The common electrical units like watt-hours, kilowatt-hours, and amp-hours are directly related to the battery capacity of the solar power system. For example, the higher the Wh and Ah ratings, the longer a battery can charge appliances. Jackery Solar Generators are built with large NMC or LiFePO4 batteries to charge all kinds of devices.
When you place the Jackery SolarSaga Solar Panels in direct sunlight, the silicon cells on the PV panels absorb and convert the solar energy into electricity. The DC current is transferred to the pure sine wave inverter of the Jackery Explorer Portable Power Station, where it is converted to usable AC electricity. You can then connect the appliances to the power station to start recharging.
Jackery Explorer 3000 Pro Portable Power Station
Regarded as the ultimate power solution, Jackery Explorer 3000 Pro Portable Power Station has The pull rods and double wheels attached to the power station make it easy to carry for outdoor trips. In addition, it features 12 forms of protection, an embedded security chip, and a 30% improved heat dissipation efficiency to enhance the security level of the power station. The large battery capacity can charge 99% of the electrical appliances.
Appliances Running Time
- Lamp (5W) = 514.0H
- Mini Fridge (90W) = 28.5H
- Bluetooth Speaker (10W) = 257.0H
- TV (60W) = 42.8H
- Mini Cooler (90W) = 28.5H
Customer Review
“I am about to take my Explorer 3000 Pro on its first camping trip. One thought crossed my mind. It seems like a very well-designed unit that should meet my power needs.” — John Porter.
Jackery Explorer 2000 v2 Portable Power Station
Jackery Explorer 2000 v2 Portable Power Station delivers enormous power to charge all small and large appliances during a power outage, off-grid activities, or RV trips. It can charge AC, full-sized refrigerators, and much more. The battery can charge low-power-consuming and even high-power-consuming appliances efficiently. It supports 20 ms UPS to ensure seamless power transfer to keep devices like hard drives, desktops, and fish tanks running smoothly during blackout, offering protection against equipment damage.
Appliances Running Time
- Lamp (5W) = 347.1H
- Mini Fridge (90W) = 19.2H
- Bluetooth Speaker (10W) = 173.5H
- TV (60W) = 28.9H
- Mini Cooler (90W) = 19.2H
Customer Review
“We live in Central Florida, a hurricane country. We purchased our Jackery 2000v2 as a backup power source as our whole house generator is a manual operation, meaning it will run our entire house but has to be connected manually AFTER a storm passes and it is safe to do so. We connected our large 18cf freezer to see how long it would run. Impressively, it ran for 28 hours. Charging phones, laptops and especially rechargeable flashlights are no problem.” — Mark Moll.
Jackery Explorer 1000 Plus Portable Power Station
The Jackery Explorer 1000 Plus Portable Power Station offers more power in a smaller size and supports charging of 99% of household or outdoor appliances. The ergonomic design, foldable handle, and flat top ensure easy movement from one place to another. You can carry the portable power station to camping, RV trips, or other outdoor adventures to ensure essential appliances remain powered throughout the trip. It also supports an additional Jackery Battery Pack 1000 Plus to expand the battery capacity from 1.2kWh to 5kWh.
Appliances Running Time
- Lamp (5W) = 214.8H
- Mini Fridge (90W) = 11.9H
- Bluetooth Speaker (10W) = 107.4H
- TV (60W) = 17.9H
- Mini Cooler (90W) = 11.9H
Customer Review
“We've had the unit for a while now and absolutely love how rugged it is. The solar panels work great, and the peace of mind of knowing we have a battery backup for all our devices and some appliances is awesome.” — John Brogan.
Jackery Explorer 300 Plus Portable Power Station
The Jackery Explorer 300 Plus Portable Power Station is another charging solution that offers reliable power to essential appliances. It can be carried to outdoor camping or hiking trips to charge smartphones, drones, lights, laptops, projectors, etc. It comes with a foldable handle and ensures you can carry the power station anywhere and power appliances on the go. The multiple output ports help you charge various appliances for long hours.
Appliances Running Time
- Lamp (5W) = 48.9H
- Mini Fridge (90W) = 2.7H
- Bluetooth Speaker (10W) = 24.4H
- TV (60W) = 4.0H
- Mini Cooler (90W) = 2.7H
Customer Review
“Ran for 9 hrs with 20% left. Perfect for me, as my CPAP is a necessity for me. I have been looking for a solution for several years, and this 300-plus is perfect. Thank you, Jackery.” — Douglas Wills.
Wh to mAh or mAh to Wh FAQs
How many watts per hour is 20000mAh? Is 10000mAh?
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.
Similarly, let us suppose the battery voltage is 12V.
The watt-hour will be:
Wh = mAh × V ÷ 1000 = 10,000 × 12 ÷ 1000 = 120Wh.
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 3000 Pro Portable Power Station. It has a battery capacity of 3024Wh, capable of powering all small and large devices for hours.
How big of a power station do I need?
If you want to choose the ideal size of a power station, the first step is to understand how much power you need. You need to identify how many appliances you want to charge using the power station.
Now, determine how long you wish to use each appliance and multiply the hours by the device's wattage. Since no power stations are 100% efficient, multiply the total Wh by 0.85. The result will be the minimum capacity of the battery backup you must consider.
For example, if you are charging a 500W refrigerator with the help of Jackery Explorer 2000 v2 Portable Power Station, the working hours or running time can be calculated as:
Working Hours = Battery Capacity in Wh × 0.85/ Operating wattage of the appliance = 2042Wh × 0.85 / 500W = 3.4H.
Note: We have multiplied by 0.85 (power factor) to account for the power loss that happens while charging the appliances.
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-sized 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 example, if you have higher power requirements, you can consider the ultimate power solution – Jackery Explorer 3000 Pro with a battery capacity of 3024Wh.
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