Ambrane Power Bank

How Do You Choose A Power Bank With The Right Capacity?

As a writer, I understand the importance of finding the perfect power bank to keep your smartphone, tablet, or laptop charged and ready to go. It’s a decision that can greatly impact your daily routine. That’s why it’s crucial to consider the capacity of the power bank, as it determines how frequently you can recharge your devices.

Regarding capacity, there’s a key factor to remember: energy loss and voltage conversion. These factors mean that the actual capacity of a power bank is typically around 2/3 of what is indicated. This realization adds another layer of complexity to the decision-making process.

However, fear not! You don’t have to navigate this dilemma alone. I am here to lend a helping hand and guide you toward selecting the perfect power bank with the right capacity for your needs.

Choosing A Power Bank With The Right Capacity

Power bank Charging from Wall Charger

When it comes to determining the ideal capacity for a power bank, several factors come into play, including the devices you intend to charge and your charging preferences. To simplify your decision-making process, we have compiled a list of power banks with varying capacities:

  • 27,000mAh: This high-capacity power bank is designed to charge multiple devices. With its ample power supply, you can confidently keep multiple smartphones, tablets, or even laptops charged and ready for use.
  • 20,000mAh: This power bank is an excellent choice if you primarily rely on your tablet or laptop. With its substantial capacity, you can expect to charge your tablet or laptop once or twice before recharging the power bank.
  • 10,000mAh: Perfect for smartphone users, this power bank offers enough capacity to charge your smartphone once or twice. Its compact size makes it a convenient companion for your daily charging needs. In fact, I am using a 10,000 mAh one. Below is the image of it.
Baseus Power bank
Baseus Power bank
  • 5000mAh: If you’re seeking a power bank specifically for your smartphone, this option provides enough capacity to charge your device once. Its lightweight and portable design makes it an ideal choice for on-the-go charging.

By considering the devices you intend to charge and your desired charging capabilities, you can select the power bank that perfectly aligns with your needs. Remember, I am trying my best to find the ideal power bank seamlessly integrates into your lifestyle, providing reliable and efficient charging whenever needed.

Now let’s talk above capacities a little bit more

27,000mAh: capacity

I want to provide you with a personalized yet informative description of a large 27,000mAh power bank. This powerful device boasts an impressive actual capacity of 18,000mAh, making it an excellent choice for those seeking to charge multiple devices.

Whether you need to recharge your laptop, work smartphone, or personal device simultaneously, this power bank covers you. Its substantial capacity ensures you can keep all your devices powered up and ready to tackle the day ahead. Moreover, multiple USB ports allow you to charge your devices concurrently, adding an extra level of convenience to your charging experience.

If your priority is charging your smartphone, this power bank will exceed your expectations. With its impressive capacity, you can charge your smartphone approximately 6 to 8 times before replenishing the power bank’s energy. Imagine the convenience of having a fully charged device every day during a week-long camping trip or sharing the power bank with your friends at a festival, ensuring that everyone stays connected.

20,000mAh: Ideal for Laptops And Tablets

Charging a laptop with a powerbank

For laptops and power banks, I recommend opting for a power bank with a minimum capacity of 20,000mAh.

Tablet batteries typically have different capacities depending on the model. For instance, the iPad Mini has a battery capacity of around 6,000mAh, while the iPad Pro boasts a higher capacity of approximately 11,000mAh. On average, most tablets have a battery capacity of around 8,000mAh, which is also similar to that of laptops.

A power bank with a capacity of 20,000mAh may sound impressive, but it’s essential to note that the actual usable capacity is slightly lower. In the case of a 20,000mAh power bank, the effective capacity is around 13,300mAh. This means you can charge your tablets and laptops at least once with this power bank, and even small tablets can be charged twice.

However, if you own a particularly large laptop like the 15-inch or 16-inch MacBook Pro models, it is advisable to consider a power bank with a higher capacity of at least 27,000mAh to ensure sufficient power supply for your device.

How many times can you charge a phone using a 20,000mAh power bank? Then read How Many Times Can a 20,000mAh Power Bank Charge Your Phone?

10,000mAh: To Charge Your Smartphone


When it comes to choosing a power bank for your smartphone and other additional devices, it’s important to consider the capacity that suits your needs. Let’s dive into the details.

A 10,000mAh power bank might sound impressive, but it’s important to note that its actual usable capacity is around 6,660mAh. This means that you can expect to charge your smartphone approximately 1.5 times with this power bank. It’s worth noting that the battery size of smartphones can vary depending on the device.

For instance, older smartphones from about two years ago may have a battery capacity of around 2,000mAh, while newer models tend to feature larger batteries of approximately 4,000mAh. Therefore, it’s essential to check the specific battery size of your smartphone to get a better estimate of how many charges you can expect from a power bank.

If you’re looking to charge additional devices alongside your smartphone, such as earbuds, an e-reader, or a second smartphone, I recommend opting for a power bank with a capacity of at least 15,000mAh. This will ensure you have enough power to recharge multiple devices multiple times before needing to recharge the power bank itself.

5000mAh: To Charge Your Smartphone For 1 Time

The actual capacity of a 5000mAh power bank is approximately 2/3 of its stated value, which translates to around 3330mAh. It’s important to note that the battery sizes of smartphones can vary, particularly when comparing iPhones and Android devices.

Except for the larger models like the iPhone 12 and 13 Pro Max, the battery capacity tends to be smaller than 3330mAh. This means that you can fully charge your iPhone once with the 5000mAh power bank. It provides ample power to keep your iPhone up and running when you’re on the go.

On the other hand, Android smartphones, particularly those from Samsung and OnePlus, often feature larger batteries with capacities of 4000mAh or even 5000mAh, or even higher in some cases. With a 5000mAh power bank, you may not be able to fully charge these devices due to their higher battery capacities. However, it can still provide a substantial amount of power to give your Android smartphone a significant boost.


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