How Much mAh Do I Need In A Power Bank-Buying Guide

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How Much mAh Do I Need In A Power Bank-Buying Guide

Customers frequently ask us, “What on earth is mAh?!” Alternatively, “How much mAh do I need in a power bank?!” Since many of you will not be familiar with the term “mAh,”.

A power bank purchase should be carefully considered because it should meet your needs. Do you want to be known as the charging king at work and are looking for a power bank to bring to the office during the week? Or perhaps you want a dedicated, personal power bank.

Whatever the situation, purchasing a power bank that meets your needs will significantly impact you. The capacity of a power bank is one of its most important features. Would you like to purchase a 20,000mAh power bank? Maybe only a 3,000mAh power bank will do?

Well, if you want to purchase a power bank but are unsure of how much mAh it requires you’ve come to the right place. Here, we’ll provide you with the precise mAh requirements for your optimal power bank. Now we will learn “How much mAh do I need in a power bank? and How much does it, therefore, need especially for Kayaking, Canoeing, Hiking, or paddling.

A Day Spent With Water Is Never Waste of Time…!

The best battery size of your phone determines the optimal mAh for your power bank. A power bank’s battery should be larger than the phone’s battery. A power bank with 15000–20000mAh should work perfectly.

You realize that you use your phone a lot, but the truth is that you need it almost constantly to accomplish your daily business and personal goals. We rely on our phones to make life easier, despite the misconception that we should limit our use of them.

How Much mAh Do I Need In A Power Bank- Buying Guide

As their use increases, their battery life degrades, and at this time you might want to think about obtaining a Power Bank to improve your everyday functioning. We wrote this blog article to provide some much-needed clarification about “How much mAh do I need in a power bank?.

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Usage and time are two crucial aspects to take into account when determining how much mAh (power) you require in a power bank. If you use your phone as frequently as the rest of us do, you are likely familiar with the problems caused by a low battery. 

Whatever name you give them—portable chargers, fuel banks, pocket power cells, backup charging devices—one thing is certain: they are a dependable source of backup power.

But how much max mAh and a power bank contains?

With that in mind, we’ll help you focus your search on a compact charger that suits your specific demands in terms of power and lifestyle.

We have made every effort to make the content of this post as simple to understand as possible for anyone without prior knowledge, even though it may be a bit technical and lengthy to read.

After reading this blog, You’ll become a Master in Power Banks in no time!

What is mAh In A Power Bank?

Similar to the diversity of cellphones available, these devices come in a wide range of sizes, forms, and power capacities.

When investigating these units, the phrase you encounter the most frequently is mAh. The term “milliampere hour” is an acronym that represents the electrical capacity of tiny batteries. Because “ampere” is always denoted with a capital A in accordance with the International System of Units, the A is capitalized. The mAh rating merely indicates the capability for power flow over time.

In Other Words:

The unit used to describe how long (per hour) a power bank can deliver a specific quantity of current is known as milliamps per hour (mAh) (mA). The output of a typical adaptor for a smartphone is 1000 mA. Your smartphone carries 1000 mAh when you charge it for one hour. You may then charge your smartphone 10 times with a power bank that has a 10,000 mAh capacity.

What Does mAh Mean In Batteries (Battery Capacity)

A Typical Misunderstanding About mAh

The capacity of a battery is often expressed in milliampere-hours (mAh). One widespread fallacy is that we can calculate how many times we can use this power bank to charge the smartphone or tablet by simply dividing the capacity of the battery by the capacity of the device. However, that algorithm is incorrect.

Energy And Capacity Are Two Distinct Ideas.

Simply explained, Watt Hour (Wh) is a measure of electric energy, whereas Ampere-Hour (mAh) is a measure of electric charge, which indicates the capacity of a battery.

Ampere-Hour x Voltage = Watt-Hour

A charger with a size of 10400mAh may deliver a total charge of 10400mAh at a particular voltage. A lithium-ion battery exchanges the majority of its charge at a voltage of about 3.7V. 

In theory, a 10400mAh battery has a total energy of 10400mAh x 3.7V = 38480mWh, or about 38Wh.

Significant Variations In Power Banks.

The capacity of each power bank determines how frequently it may be used to recharge your electrical devices. Therefore, a power bank with a higher capacity (mAh) can recharge your gadgets more frequently than one with a lower capacity. Some electrical gadgets require a greater capacity charger because they use more electricity. In contrast to other power banks, a 40,000 mAh power bank can be used to charge your Macbook or laptop.

How Frequently Can I Use A Power Bank To Charge My Phone?

The capacity of the battery in a power bank determines how many times you can recharge your smartphone, tablet, or laptop using it. By dividing the capacity of the power bank by the capacity of your electrical device, you can quickly determine how frequently you can charge your gadgets with a power bank. For instance: A smartphone has a 4000 mAh capacity, and a 12000 mAh power bank. Afterward, you can divide 12000 mAh by 4000 mAh, and the result is 3.

Marking Capacity Versus Real Capacity

Between a power bank’s actual capacity and its stated capacity, there is a noticeable discrepancy. A power bank with a capacity of 10,000mAh won’t actually transmit 10,000mAh to another device, but significantly less. About 80–85 percent of the marking capability will be transferred.

The majority of power banks include lithium batteries, which typically have a voltage of 3.7V. A device is charged by a power bank using a USB-C port, which has a 5.1V voltage. Instead of using the 5.1V that we utilize, manufacturers base their calculations on the 3.7V amount. The actual capacity is thus substantially lower.

You must first convert from mAh to mWh and then back to mAh in order to determine the actual capacity (with the 5V). Thus, 10000mAh times 3.7V (the lithium voltage) is 37,000mWh, and 5.1V (the USB-C voltage) equals 7,555mAh. The power bank loses 10% of its power when converting these numbers. Therefore, a 10000mAh power bank has just 6,528mAh.

How To Measure The Capacity of A Power Bank

But Which Type of Portable Charger Suits You The Best?

We advise you to make an early decision on the power bank’s intended use and power user type. Will you sometimes top off your phone with the extra energy (low use), or will you need a power source to set up a remote office so you can get ahead on some work while on vacation (heavy use)? You can evaluate your possibilities after you are aware of your use cases.


The best option if you require a greater power source with a longer runtime is a portable power bank with a large mAh, like 40,000 mAh. You do run the risk of losing portability with this choice, so consider how you will keep it for easy access.

There are several different types of portable battery banks available today that are small enough to fit in a backpack and provide multiple power sources, including AC outlets and USB charging connectors.


A smaller, more portable power supply would be ideal for you if you only sometimes boost power. You’ll get the most use out of power banks with capacities between 5000 and 2000 mAh, but keep in mind that smaller devices are likely to have fewer power options.

Ways To Estimate How Many mAh You Require

There are 4 ways to estimate how many mAh you require:

  • 1. Consider the intended audience. How much are you prepared to shell out for them? What kind of mAh would they require?
  • 2. Consider the sell, exchange, or giveaway’s intended use to decide the size and price that will best accomplish the task.
  • 3. Determine the mAh values of the devices you intend to charge with your power bank (the table below provides this data on some of the most popular gadgets in use today).
  • 4. Calculate how many charging cycles you want your power bank to provide using the information from step 1. You will have a total of nine charging cycles, for instance, if your power bank has a mAh value of 9,000 and the device you need to charge has a mAh capacity of 1,000.

Battery Capacity – Amp-Hours, mAh, and Watt-Hours

How Much mAh Do I Need In A Power Bank To Charge A Google Pixel Phone?

The complete list of Google Pixel phones along with the mAh requirement for a power bank is provided below:

Mobile ModelsCapacityPower Bank’s 1 Charge Capacity Power Bank’s 2 Charge Capacity
Google Pixel 5a 5G4680mAh5505mAh11010mAh
Google Pixel 4a3140mAh3694mAh7388mAh
Google Pixel 22700mAh3176mAh6352mAh
Google Pixel 32915mAh3429mAh6858mAh
Google Pixel 3a XL3700mAh4352mAh8704mAh
Google Pixel 42800mAh3294mAh6588mAh
Google Pixel 3 XL3430mAh4035mAh8070mAh
Google Pixel2770mAh3258mAh6516mAh
Google Pixel 4 XL3700mAh4352mAh8704mAh
Google Pixel 2 XL3520mAh4141mAh8282mAh
Google Pixel 54080mAhGoogle Pixel 54080mAh
Google Pixel 3a3000mAh3529mAh7058mAh
Google Pixel XL3450mAh4058mAh8116mAh
Google Pixel 64614mAh5428mAh10586mAh
Google Pixel 6 Pro5003mAh5885mAh11770mAh

How Much mAh Do I Need In A Power Bank To Charge iPhones?

Because the battery capacity of each iPhone varies, different power banks are needed. Here is a list of every iPhone model:

ModelsBattery CapacityThe Capacity of Power Bank
For 1 Charge
The Capacity of Power Bank
For 2 Charge
iPhone 61810 mAh2130 mAh4260 mAh
iPhone 6 Plus2915 mAh3430 mAh6858 mAh
iPhone 6s1715 mAh2017 mAh4034 mAh
iPhone 6s Plus2915 mAh3430 mAh6862 mAh
iPhone 71960 mAh2305 mAh 4610 mAh
iPhone 7 Plus2900 mAh3411 mAh6822 mAh
iPhone 81821 mAh2142 mAh4284 mAh
iPhone 8 Plus2675 mAh3382 mAh6764 mAh
iPhone X2716 mAh3195 mAh6390 mAh
iPhone XS2658 mAh3127mAh6254 mAh
iPhone XS Max3174 mAh3734 mAh7468 mAh
iPhone XR2942 mAh3461 mAh6922 mAh
iPhone 113110 mAh3658 mAh7316 mAh
iPhone 11 Pro3046 mAh3583 mAh7166 mAh
iPhone 11 Pro Max3969 mAh4669 mAh9338 mAh
iPhone SE (2nd-gen)1821 mAh2142 mAh4284 mAh
iPhone 122815 mAh3311 mAh6622 mAh
iPhone 12 Pro2815 mAh3311 mAh6622 mAh
iPhone 12 Pro Max3687 mAh4337 mAh8674 mAh
iPhone 12 Mini2227 mAh2620 mAh5240 mAh
iPhone 133227 mAh3796 mAh7592 mAh
iPhone 13 Mini2406 mAh2830 mAh5660 mAh
iPhone 13 Pro3095 mAh3641 mAh7282 mAh
iPhone 13 Pro Max4353 mAh5121 mAh10242 mAh

How Much mAh Do I Need In A Power Bank To Charge Samsung Phones?

There are numerous Samsung phones, but we chose the most popular models:

Phone:Battery Capacity:Capacity of Power Bank For 1 ChargeCapacity of Power BankFor 2 Charges
Samsung Galaxy Note 10+/Note 10+ 5G4300 mAh5258 mAh10516 mAh
Samsung Galaxy Note 103500 mAh4117 mAh8234 mAh
Samsung Galaxy Note 94000 mAh4705 mAh9410 mAh
Samsung Galaxy Note 83300 mAh3882 mAh7764 mAh
Samsung Galaxy Note 73500 mAh4117 mAh8234 mAh
Samsung Galaxy S20 Ultra5000 mAh5882 mAh11764 mAh
Samsung Galaxy S20+4500 mAh5294 mAh10558 mAh
Samsung Galaxy S204000 mAh4705 mAh9410 mAh
Samsung Galaxy S10 5G4500 mAh5294 mAh10558 mAh
Samsung Galaxy S10+4100 mAh4823 mAh9464 mAh
Samsung Galaxy S10e3100 mAh3467 mAh6934 mAh
Samsung Galaxy S103400 mAh4000 mAh8000 mAh
Samsung Galaxy S9+3500 mAh4117 mAh8234 mAh
Samsung Galaxy S93000 mAh3529 mAh7056 mAh
Samsung Galaxy S8 Active4000 mAh4705 mAh9410 mAh
Samsung Galaxy S8 +3500 mAh4117 mAh8234 mAh
Samsung Galaxy S83000 mAh3529 mAh7056 mAh
Samsung Galaxy A50/A30/A204000 mAh4705 mAh9410 mAh
Samsung Galaxy A70/ A90 5G4500 mAh5294 mAh10558 mAh
Samsung Galaxy A103400 mAh4000 mAh8000 mAh

Conclusion For How Much mAh Do I Need In A Power Bank

A power bank is a very useful piece of equipment. However, if the power bank lacks sufficient battery capacity to charge your devices, it will be ineffective. Whatever power capacity you require in a portable power bank, you can be confident that there are a variety of options available to meet your requirements.

That is why determining how much battery capacity or mAh a power bank should have to meet your requirements will make the process much easier.

FAQs For How Much mAh Do I Need In A Power Bank-Buying Guide

Is a 30000mAh power bank good enough?

Even though having a large 30,000 mAh battery is excellent, charging it back up can take a while. In contrast, the Jiga. The Jiga may really be recharged considerably more quickly by simultaneously using all three input ports!

How many hours can a 3000 mAh battery last?

The incorporated SmartPower 3.0 technology is part of the 3000 mAh battery. With moderate use, a single full charge can last up to 1.46 days, and with heavy use, over a day.

How many hours to charge a 20000mAh power bank

It will take around 40 hours because larger batteries can hold more energy, and certain power banks require more time to charge. A high-capacity power bank of 20,000 mAh, for instance, can take up to 40 hours to fully charge. Smaller power banks with 4,000 mAh may charge in just a few hours.

how long does it take to charge a 30000mah power bank?

It can take up to 45 minutes to fully charge a 3000 mAh battery. Using timed charging is a bad idea. It will overcharge significantly if you put it on charge before fully draining it.

How long does it take to charge a 40000 mAh power bank?

It just needs 16 hours to fully recharge

How many times will a 30000mAh power bank charge a phone?

With a capacity of 30000mAh, the battery pack can fully charge the iPhone 12 6.9 times, the Google Pixel 5 4.5 times, the Samsung Galaxy S21/S20 5 times, and the iPad Pro 2 times. Supports TWS and sports watch trickle-charging mode as well. You may simultaneously charge 4 gadgets using their 4 outputs.

how many times can a 10000mah power bank charge an iPhone 11

a 10,000mAh power bank for smartphones You can charge the majority of modern smartphones like the iPhone 11 roughly 1.5 times using a 10,000mAh power bank (actual capacity: 6,660mAh).

How many times can a 20000mAh power bank charge an Android phone?

Power banks can range from individual charge (3000mAh) to well over (20,000mAh), and the majority of the latest smartphones have a battery with a capacity of around 3000mAh. A 10,000mAh power bank should be able to charge a smartphone three times, while a 20,000mAh power bank should be able to charge it more than six times.

How many times can a 10000mAh power bank charge an Android phone?

Most of the newest smartphones have a battery of about 3000mAh, and power banks can range from a single charge (3000mAh) to well over (20,000mAh). Up to three charges of the smartphone should be possible with a 10,000mAh power bank, and up to six charges with a 20,000mAh power bank.

How long does a 20000mAh power bank last?

This holds true for laptops as well, with an average of about 8,000mAh. A 20,000mAh power bank can charge tablets and laptops roughly 1.5 times (real capacity: 13,300mAh). You need a 30,000mAh power bank for certain incredibly large laptops, like the MacBook Pro 16 inches.

What is the highest mAh power bank?

A portable power bank with 27 million mAh! That invention was made by a Chinese investor by the name of Handy Geng, which might sound strange. The largest power bank in the world, according to Geng, is now being praised. With 3,000 mAh batteries, it can run 5,000 phones on a single charge.

Which is better 10,000 mAh or 20000mAh?

The 20000mAh variant is a bit bulkier due to the doubled battery capacity, but the 10000mAh normal version is slimmer and lighter. The two Redmi power banks include two input ports on the interface: a micro USB connection and a USB Type-C interface. The power banks can be charged using either of them.

How can I make my power bank last longer?

DO take temperature into account…. DO unplug your Power Bank’s charger as soon as it is finished charging.
Even if you aren’t using your Power Bank, you should still charge it. However, you should avoid charging it all the way.

Is it necessary to empty my power bank before charging?

However, it is typically advised to charge the power bank first and then use it. Even if the power bank has some charge when you take it out of the packing, it is polite to fully charge it before using it for the first time.

How can I speed up the charging of my power bank?

Generally, use a wall outlet to enhance the effectiveness of the power bank. A power bank will typically charge faster from a wall outlet than from a computer or laptop. Unless you have just a laptop or computer at your disposal, always charge your power bank through the wall.

Which mAh is ideal for a power bank?

You’ll get the most use out of power banks with capacities between 5000 and 2000 mAh, but keep in mind that smaller devices are likely to have fewer power options.

Can I use two chargers to recharge my power bank?

No, you cannot simultaneously charge one power bank with two chargers.

Is using a power bank while it’s charging okay?

Only power banks with the pass-through feature will allow you to charge one device while simultaneously using it to charge another. Even then, there is a chance of battery damage, thus you should only utilize this function if there is no other choice.

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I hope you found this essay about “How Much mAh Do I Need In A Power Bank while kayaking, Paddling or Canoeing” informative and entertaining. If you discover something incorrect or obsolete (pricing not mentioned, as it is always changing :), please leave a remark below and I will correct it as soon as possible. Thanks for reading this article.

Enjoy Kayaking With Fully Charged Devices:) 🎣🚣🏻

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